Revert "Merge branch 'master' of https://bitbucket.org/lindenlab/viewer into DRTVWR-519"

This reverts commit e61f485a04dc8c8ac6bcf6a24848359092884d14, reversing
changes made to 00c47d079f7e958e473ed4083a7f7691fa02dcd5.

93 files changed, 670 insertions, 277 deletions

diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 82e6cda193..3439951e80 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -39,7 +39,7 @@ include(LLPlugin)
 include(LLPrimitive)
 include(LLRender)
 include(LLUI)
-include(LLFileSystem)
+include(LLVFS)
 include(LLWindow)
 include(LLXML)
 include(NDOF)
@@ -84,7 +84,7 @@ include_directories(
     ${LLPRIMITIVE_INCLUDE_DIRS}
     ${LLRENDER_INCLUDE_DIRS}
     ${LLUI_INCLUDE_DIRS}
-    ${LLFILESYSTEM_INCLUDE_DIRS}
+    ${LLVFS_INCLUDE_DIRS}
     ${LLWINDOW_INCLUDE_DIRS}
     ${LLXML_INCLUDE_DIRS}
     ${LLLOGIN_INCLUDE_DIRS}
@@ -2016,7 +2016,7 @@ target_link_libraries(${VIEWER_BINARY_NAME}
     ${LLRENDER_LIBRARIES}
     ${FREETYPE_LIBRARIES}
     ${LLUI_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
+    ${LLVFS_LIBRARIES}
     ${LLWINDOW_LIBRARIES}
     ${LLXML_LIBRARIES}
     ${LLMATH_LIBRARIES}
@@ -2492,7 +2492,7 @@ if (LL_TESTS)
   set(test_libs
     ${LLMESSAGE_LIBRARIES}
     ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
+    ${LLVFS_LIBRARIES}
     ${LLMATH_LIBRARIES}
     ${LLCOMMON_LIBRARIES}
     ${GOOGLEMOCK_LIBRARIES}
@@ -2507,7 +2507,7 @@ if (LL_TESTS)
 
   set(test_libs
     ${WINDOWS_LIBRARIES}
-    ${LLFILESYSTEM_LIBRARIES}
+    ${LLVFS_LIBRARIES}
     ${LLMATH_LIBRARIES}
     ${LLCOMMON_LIBRARIES}
     ${LLMESSAGE_LIBRARIES}
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 393a38fb9c..c0166f158e 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -1362,39 +1362,6 @@
       <key>Value</key>
       <integer>23</integer>
     </map>
-    <key>EnableCacheDebugInfo</key>
-    <map>
-      <key>Comment</key>
-      <string>When set, display additional cache debugging information</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
-    <key>DiskCachePercentOfTotal</key>
-    <map>
-      <key>Comment</key>
-      <string>The percent of total cache size (defined by CacheSize) to use for the disk cache</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>F32</string>
-      <key>Value</key>
-      <real>20.0</real>
-    </map>
-    <key>DiskCacheDirName</key>
-    <map>
-      <key>Comment</key>
-      <string>The name of the disk cache (within the standard Viewer disk cache directory)</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>String</string>
-      <key>Value</key>
-      <string>cache</string>
-    </map>
     <key>CacheLocation</key>
     <map>
       <key>Comment</key>
@@ -2868,6 +2835,17 @@
       <key>Value</key>
       <integer>-1</integer>
     </map>
+    <key>DebugStatModeVFSPendingOps</key>
+    <map>
+      <key>Comment</key>
+      <string>Mode of stat in Statistics floater</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>S32</string>
+      <key>Value</key>
+      <integer>-1</integer>
+    </map>
     <key>DebugStatModeTimeDialation</key>
     <map>
       <key>Comment</key>
@@ -3660,6 +3638,17 @@
       <key>Value</key>
       <integer>4</integer>
     </map>
+    <key>DumpVFSCaches</key>
+    <map>
+      <key>Comment</key>
+      <string>Dump VFS caches on startup.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>DynamicCameraStrength</key>
     <map>
       <key>Comment</key>
@@ -11591,7 +11580,7 @@
             <string>Boolean</string>
         <key>Value</key>
             <integer>0</integer>
-    </map>
+    </map> 
     <key>NearbyListShowMap</key>
     <map>
       <key>Comment</key>
@@ -14269,6 +14258,28 @@
       <key>Value</key>
       <string/>
     </map>
+    <key>VFSOldSize</key>
+    <map>
+      <key>Comment</key>
+      <string>[DO NOT MODIFY] Controls resizing of local file cache</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>U32</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
+    <key>VFSSalt</key>
+    <map>
+      <key>Comment</key>
+      <string>[DO NOT MODIFY] Controls local file caching behavior</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>U32</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
     <key>VelocityInterpolate</key>
     <map>
       <key>Comment</key>
@@ -16610,7 +16621,7 @@
       <key>Type</key>
       <string>Boolean</string>
       <key>Value</key>
-      <integer>1</integer>
+      <integer>1</integer>        
     </map>
 </map>
 </llsd>
diff --git a/indra/newview/app_settings/static_data.db2 b/indra/newview/app_settings/static_data.db2
new file mode 100644
index 0000000000..f85aa81601
--- /dev/null
+++ b/indra/newview/app_settings/static_data.db2
diff --git a/indra/newview/app_settings/static_index.db2 b/indra/newview/app_settings/static_index.db2
new file mode 100644
index 0000000000..a5440f96f2
--- /dev/null
+++ b/indra/newview/app_settings/static_index.db2
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index ea0b950e62..f518704e06 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -98,7 +98,6 @@
 #include "lllogininstance.h"
 #include "llprogressview.h"
 #include "llvocache.h"
-#include "lldiskcache.h"
 #include "llvopartgroup.h"
 #include "llweb.h"
 #include "llfloatertexturefetchdebugger.h"
@@ -116,6 +115,8 @@
 #include "llprimitive.h"
 #include "llurlaction.h"
 #include "llurlentry.h"
+#include "llvfile.h"
+#include "llvfsthread.h"
 #include "llvolumemgr.h"
 #include "llxfermanager.h"
 #include "llphysicsextensions.h"
@@ -339,6 +340,9 @@ bool			gUseWireframe = FALSE;
 //use for remember deferred mode in wireframe switch
 bool			gInitialDeferredModeForWireframe = FALSE;
 
+// VFS globals - see llappviewer.h
+LLVFS* gStaticVFS = NULL;
+
 LLMemoryInfo gSysMemory;
 U64Bytes gMemoryAllocated(0); // updated in display_stats() in llviewerdisplay.cpp
 
@@ -427,6 +431,12 @@ void init_default_trans_args()
 	default_trans_args.insert("create_account_url");
 }
 
+//----------------------------------------------------------------------------
+// File scope definitons
+const char *VFS_DATA_FILE_BASE = "data.db2.x.";
+const char *VFS_INDEX_FILE_BASE = "index.db2.x.";
+
+
 struct SettingsFile : public LLInitParam::Block<SettingsFile>
 {
 	Mandatory<std::string>	name;
@@ -961,6 +971,10 @@ bool LLAppViewer::init()
 
 	// *Note: this is where gViewerStats used to be created.
 
+	//
+	// Initialize the VFS, and gracefully handle initialization errors
+	//
+
 	if (!initCache())
 	{
 		LL_WARNS("InitInfo") << "Failed to init cache" << LL_ENDL;
@@ -1355,6 +1369,7 @@ static LLTrace::BlockTimerStatHandle FTM_TEXTURE_CACHE("Texture Cache");
 static LLTrace::BlockTimerStatHandle FTM_DECODE("Image Decode");
 static LLTrace::BlockTimerStatHandle FTM_FETCH("Image Fetch");
 
+static LLTrace::BlockTimerStatHandle FTM_VFS("VFS Thread");
 static LLTrace::BlockTimerStatHandle FTM_LFS("LFS Thread");
 static LLTrace::BlockTimerStatHandle FTM_PAUSE_THREADS("Pause Threads");
 static LLTrace::BlockTimerStatHandle FTM_IDLE("Idle");
@@ -1589,13 +1604,17 @@ bool LLAppViewer::doFrame()
 				work_pending += updateTextureThreads(max_time);
 
 				{
+					LL_RECORD_BLOCK_TIME(FTM_VFS);
+ 					io_pending += LLVFSThread::updateClass(1);
+				}
+				{
 					LL_RECORD_BLOCK_TIME(FTM_LFS);
  					io_pending += LLLFSThread::updateClass(1);
 				}
 
 				if (io_pending > 1000)
 				{
-					ms_sleep(llmin(io_pending/100,100)); // give the lfs some time to catch up
+					ms_sleep(llmin(io_pending/100,100)); // give the vfs some time to catch up
 				}
 
 				total_work_pending += work_pending ;
@@ -1612,6 +1631,7 @@ bool LLAppViewer::doFrame()
 			}
 			if(!total_io_pending) //pause file threads if nothing to process.
 			{
+				LLVFSThread::sLocal->pause();
 				LLLFSThread::sLocal->pause();
 			}
 
@@ -1673,11 +1693,12 @@ S32 LLAppViewer::updateTextureThreads(F32 max_time)
 	return work_pending;
 }
 
-void LLAppViewer::flushLFSIO()
+void LLAppViewer::flushVFSIO()
 {
 	while (1)
 	{
-		S32 pending = LLLFSThread::updateClass(0);
+		S32 pending = LLVFSThread::updateClass(0);
+		pending += LLLFSThread::updateClass(0);
 		if (!pending)
 		{
 			break;
@@ -1765,7 +1786,7 @@ bool LLAppViewer::cleanup()
 
 	LLKeyframeDataCache::clear();
 
- 	// End TransferManager before deleting systems it depends on (Audio, AssetStorage)
+ 	// End TransferManager before deleting systems it depends on (Audio, VFS, AssetStorage)
 #if 0 // this seems to get us stuck in an infinite loop...
 	gTransferManager.cleanup();
 #endif
@@ -1832,8 +1853,8 @@ bool LLAppViewer::cleanup()
 
 	LL_INFOS() << "Cache files removed" << LL_ENDL;
 
-	// Wait for any pending LFS IO
-	flushLFSIO();
+	// Wait for any pending VFS IO
+	flushVFSIO();
 	LL_INFOS() << "Shutting down Views" << LL_ENDL;
 
 	// Destroy the UI
@@ -1917,6 +1938,15 @@ bool LLAppViewer::cleanup()
 	SUBSYSTEM_CLEANUP(LLWorldMapView);
 	SUBSYSTEM_CLEANUP(LLFolderViewItem);
 
+	//
+	// Shut down the VFS's AFTER the decode manager cleans up (since it cleans up vfiles).
+	// Also after viewerwindow is deleted, since it may have image pointers (which have vfiles)
+	// Also after shutting down the messaging system since it has VFS dependencies
+
+	//
+	LL_INFOS() << "Cleaning up VFS" << LL_ENDL;
+	SUBSYSTEM_CLEANUP(LLVFile);
+
 	LL_INFOS() << "Saving Data" << LL_ENDL;
 
 	// Store the time of our current logoff
@@ -2003,6 +2033,7 @@ bool LLAppViewer::cleanup()
 		pending += LLAppViewer::getTextureCache()->update(1); // unpauses the worker thread
 		pending += LLAppViewer::getImageDecodeThread()->update(1); // unpauses the image thread
 		pending += LLAppViewer::getTextureFetch()->update(1); // unpauses the texture fetch thread
+		pending += LLVFSThread::updateClass(0);
 		pending += LLLFSThread::updateClass(0);
 		F64 idle_time = idleTimer.getElapsedTimeF64();
 		if(!pending)
@@ -2077,11 +2108,28 @@ bool LLAppViewer::cleanup()
 	gTextureList.shutdown(); // shutdown again in case a callback added something
 	LLUIImageList::getInstance()->cleanUp();
 
+	// This should eventually be done in LLAppViewer
 	SUBSYSTEM_CLEANUP(LLImage);
+	SUBSYSTEM_CLEANUP(LLVFSThread);
 	SUBSYSTEM_CLEANUP(LLLFSThread);
 
+#ifndef LL_RELEASE_FOR_DOWNLOAD
+	LL_INFOS() << "Auditing VFS" << LL_ENDL;
+	if(gVFS)
+	{
+		gVFS->audit();
+	}
+#endif
+
 	LL_INFOS() << "Misc Cleanup" << LL_ENDL;
 
+	// For safety, the LLVFS has to be deleted *after* LLVFSThread. This should be cleaned up.
+	// (LLVFS doesn't know about LLVFSThread so can't kill pending requests) -Steve
+	delete gStaticVFS;
+	gStaticVFS = NULL;
+	delete gVFS;
+	gVFS = NULL;
+
 	gSavedSettings.cleanup();
 	LLUIColorTable::instance().clear();
 
@@ -2163,6 +2211,7 @@ bool LLAppViewer::initThreads()
 
 	LLImage::initClass(gSavedSettings.getBOOL("TextureNewByteRange"),gSavedSettings.getS32("TextureReverseByteRange"));
 
+	LLVFSThread::initClass(enable_threads && false);
 	LLLFSThread::initClass(enable_threads && false);
 
 	// Image decoding
@@ -3164,6 +3213,10 @@ LLSD LLAppViewer::getViewerInfo() const
     info["GPU_SHADERS"] = gSavedSettings.getBOOL("RenderDeferred") ? "Enabled" : "Disabled";
     info["TEXTURE_MEMORY"] = gSavedSettings.getS32("TextureMemory");
 
+    LLSD substitution;
+    substitution["datetime"] = (S32)(gVFS ? gVFS->creationTime() : 0);
+    info["VFS_TIME"] = LLTrans::getString("AboutTime", substitution);
+
 #if LL_DARWIN
     info["HIDPI"] = gHiDPISupport;
 #endif
@@ -3255,9 +3308,6 @@ LLSD LLAppViewer::getViewerInfo() const
 		info["SERVER_RELEASE_NOTES_URL"] = mServerReleaseNotesURL;
 	}
 
-    // populate field for new local disk cache with some details
-    info["DISK_CACHE_INFO"] = LLDiskCache::getInstance()->getCacheInfo();
-
 	return info;
 }
 
@@ -3907,7 +3957,7 @@ void LLAppViewer::forceQuit()
 void LLAppViewer::fastQuit(S32 error_code)
 {
 	// finish pending transfers
-	flushLFSIO();
+	flushVFSIO();
 	// let sim know we're logging out
 	sendLogoutRequest();
 	// flush network buffers by shutting down messaging system
@@ -4096,6 +4146,39 @@ void LLAppViewer::migrateCacheDirectory()
 #endif // LL_WINDOWS || LL_DARWIN
 }
 
+void dumpVFSCaches()
+{
+	LL_INFOS() << "======= Static VFS ========" << LL_ENDL;
+	gStaticVFS->listFiles();
+#if LL_WINDOWS
+	LL_INFOS() << "======= Dumping static VFS to StaticVFSDump ========" << LL_ENDL;
+	WCHAR w_str[MAX_PATH];
+	GetCurrentDirectory(MAX_PATH, w_str);
+	S32 res = LLFile::mkdir("StaticVFSDump");
+	if (res == -1)
+	{
+		LL_WARNS() << "Couldn't create dir StaticVFSDump" << LL_ENDL;
+	}
+	SetCurrentDirectory(utf8str_to_utf16str("StaticVFSDump").c_str());
+	gStaticVFS->dumpFiles();
+	SetCurrentDirectory(w_str);
+#endif
+
+	LL_INFOS() << "========= Dynamic VFS ====" << LL_ENDL;
+	gVFS->listFiles();
+#if LL_WINDOWS
+	LL_INFOS() << "========= Dumping dynamic VFS to VFSDump ====" << LL_ENDL;
+	res = LLFile::mkdir("VFSDump");
+	if (res == -1)
+	{
+		LL_WARNS() << "Couldn't create dir VFSDump" << LL_ENDL;
+	}
+	SetCurrentDirectory(utf8str_to_utf16str("VFSDump").c_str());
+	gVFS->dumpFiles();
+	SetCurrentDirectory(w_str);
+#endif
+}
+
 //static
 U32 LLAppViewer::getTextureCacheVersion()
 {
@@ -4122,19 +4205,6 @@ bool LLAppViewer::initCache()
 	LLAppViewer::getTextureCache()->setReadOnly(read_only) ;
 	LLVOCache::initParamSingleton(read_only);
 
-	// initialize the new disk cache using saved settings
-	const std::string cache_dir_name = gSavedSettings.getString("DiskCacheDirName");
-
-    // note that the maximum size of this cache is defined as a percentage of the 
-    // total cache size - the 'CacheSize' pref - for all caches. 
-    const unsigned int cache_total_size_mb = gSavedSettings.getU32("CacheSize");
-    const double disk_cache_percent = gSavedSettings.getF32("DiskCachePercentOfTotal");
-    const unsigned int disk_cache_mb = cache_total_size_mb * disk_cache_percent / 100;
-    const unsigned int disk_cache_bytes = disk_cache_mb * 1024 * 1024;
-	const bool enable_cache_debug_info = gSavedSettings.getBOOL("EnableDiskCacheDebugInfo");
-	const std::string cache_dir = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, cache_dir_name);
-	LLDiskCache::initParamSingleton(cache_dir, disk_cache_bytes, enable_cache_debug_info);
-
 	bool texture_cache_mismatch = false;
 	if (gSavedSettings.getS32("LocalCacheVersion") != LLAppViewer::getTextureCacheVersion())
 	{
@@ -4181,21 +4251,10 @@ bool LLAppViewer::initCache()
 		gSavedSettings.setString("CacheLocationTopFolder", "");
 	}
 
-	if (!read_only)
+	if (mPurgeCache && !read_only)
 	{
-		if (mPurgeCache)
-		{
-			LLSplashScreen::update(LLTrans::getString("StartupClearingCache"));
-			purgeCache();
-
-			// clear the new C++ file system based cache
-			LLDiskCache::getInstance()->clearCache();
-		}
-		else
-		{
-			// purge excessive files from the new file system based cache
-			LLDiskCache::getInstance()->purge();
-		}
+		LLSplashScreen::update(LLTrans::getString("StartupClearingCache"));
+		purgeCache();
 	}
 
 	LLSplashScreen::update(LLTrans::getString("StartupInitializingTextureCache"));
@@ -4205,18 +4264,172 @@ bool LLAppViewer::initCache()
 	const S32 MB = 1024 * 1024;
 	const S64 MIN_CACHE_SIZE = 256 * MB;
 	const S64 MAX_CACHE_SIZE = 9984ll * MB;
+	const S64 MAX_VFS_SIZE = 1024 * MB; // 1 GB
 
 	S64 cache_size = (S64)(gSavedSettings.getU32("CacheSize")) * MB;
 	cache_size = llclamp(cache_size, MIN_CACHE_SIZE, MAX_CACHE_SIZE);
 
-	S64 texture_cache_size = cache_size;
+	S64 vfs_size = llmin((S64)((cache_size * 2) / 10), MAX_VFS_SIZE);
+	S64 texture_cache_size = cache_size - vfs_size;
 
 	S64 extra = LLAppViewer::getTextureCache()->initCache(LL_PATH_CACHE, texture_cache_size, texture_cache_mismatch);
 	texture_cache_size -= extra;
 
+
 	LLVOCache::getInstance()->initCache(LL_PATH_CACHE, gSavedSettings.getU32("CacheNumberOfRegionsForObjects"), getObjectCacheVersion());
 
-    return true;
+	LLSplashScreen::update(LLTrans::getString("StartupInitializingVFS"));
+
+	// Init the VFS
+	vfs_size = llmin(vfs_size + extra, MAX_VFS_SIZE);
+	vfs_size = (vfs_size / MB) * MB; // make sure it is MB aligned
+	U32 vfs_size_u32 = (U32)vfs_size;
+	U32 old_vfs_size = gSavedSettings.getU32("VFSOldSize") * MB;
+	bool resize_vfs = (vfs_size_u32 != old_vfs_size);
+	if (resize_vfs)
+	{
+		gSavedSettings.setU32("VFSOldSize", vfs_size_u32 / MB);
+	}
+	LL_INFOS("AppCache") << "VFS CACHE SIZE: " << vfs_size / (1024*1024) << " MB" << LL_ENDL;
+
+	// This has to happen BEFORE starting the vfs
+	// time_t	ltime;
+	srand(time(NULL));		// Flawfinder: ignore
+	U32 old_salt = gSavedSettings.getU32("VFSSalt");
+	U32 new_salt;
+	std::string old_vfs_data_file;
+	std::string old_vfs_index_file;
+	std::string new_vfs_data_file;
+	std::string new_vfs_index_file;
+	std::string static_vfs_index_file;
+	std::string static_vfs_data_file;
+
+	if (gSavedSettings.getBOOL("AllowMultipleViewers"))
+	{
+		// don't mess with renaming the VFS in this case
+		new_salt = old_salt;
+	}
+	else
+	{
+		do
+		{
+			new_salt = rand();
+		} while(new_salt == old_salt);
+	}
+
+	old_vfs_data_file = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, VFS_DATA_FILE_BASE) + llformat("%u", old_salt);
+
+	// make sure this file exists
+	llstat s;
+	S32 stat_result = LLFile::stat(old_vfs_data_file, &s);
+	if (stat_result)
+	{
+		// doesn't exist, look for a data file
+		std::string mask;
+		mask = VFS_DATA_FILE_BASE;
+		mask += "*";
+
+		std::string dir;
+		dir = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, "");
+
+		std::string found_file;
+		LLDirIterator iter(dir, mask);
+		if (iter.next(found_file))
+		{
+			old_vfs_data_file = gDirUtilp->add(dir, found_file);
+
+			S32 start_pos = found_file.find_last_of('.');
+			if (start_pos > 0)
+			{
+				sscanf(found_file.substr(start_pos+1).c_str(), "%d", &old_salt);
+			}
+			LL_DEBUGS("AppCache") << "Default vfs data file not present, found: " << old_vfs_data_file << " Old salt: " << old_salt << LL_ENDL;
+		}
+	}
+
+	old_vfs_index_file = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, VFS_INDEX_FILE_BASE) + llformat("%u", old_salt);
+
+	stat_result = LLFile::stat(old_vfs_index_file, &s);
+	if (stat_result)
+	{
+		// We've got a bad/missing index file, nukem!
+		LL_WARNS("AppCache") << "Bad or missing vfx index file " << old_vfs_index_file << LL_ENDL;
+		LL_WARNS("AppCache") << "Removing old vfs data file " << old_vfs_data_file << LL_ENDL;
+		LLFile::remove(old_vfs_data_file);
+		LLFile::remove(old_vfs_index_file);
+
+		// Just in case, nuke any other old cache files in the directory.
+		std::string dir;
+		dir = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, "");
+
+		std::string mask;
+		mask = VFS_DATA_FILE_BASE;
+		mask += "*";
+
+		gDirUtilp->deleteFilesInDir(dir, mask);
+
+		mask = VFS_INDEX_FILE_BASE;
+		mask += "*";
+
+		gDirUtilp->deleteFilesInDir(dir, mask);
+	}
+
+	new_vfs_data_file = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, VFS_DATA_FILE_BASE) + llformat("%u", new_salt);
+	new_vfs_index_file = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, VFS_INDEX_FILE_BASE) + llformat("%u", new_salt);
+
+	static_vfs_data_file = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "static_data.db2");
+	static_vfs_index_file = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "static_index.db2");
+
+	if (resize_vfs)
+	{
+		LL_DEBUGS("AppCache") << "Removing old vfs and re-sizing" << LL_ENDL;
+
+		LLFile::remove(old_vfs_data_file);
+		LLFile::remove(old_vfs_index_file);
+	}
+	else if (old_salt != new_salt)
+	{
+		// move the vfs files to a new name before opening
+		LL_DEBUGS("AppCache") << "Renaming " << old_vfs_data_file << " to " << new_vfs_data_file << LL_ENDL;
+		LL_DEBUGS("AppCache") << "Renaming " << old_vfs_index_file << " to " << new_vfs_index_file << LL_ENDL;
+		LLFile::rename(old_vfs_data_file, new_vfs_data_file);
+		LLFile::rename(old_vfs_index_file, new_vfs_index_file);
+	}
+
+	// Startup the VFS...
+	gSavedSettings.setU32("VFSSalt", new_salt);
+
+	// Don't remove VFS after viewer crashes.  If user has corrupt data, they can reinstall. JC
+	gVFS = LLVFS::createLLVFS(new_vfs_index_file, new_vfs_data_file, false, vfs_size_u32, false);
+	if (!gVFS)
+	{
+		return false;
+	}
+
+	gStaticVFS = LLVFS::createLLVFS(static_vfs_index_file, static_vfs_data_file, true, 0, false);
+	if (!gStaticVFS)
+	{
+		return false;
+	}
+
+	BOOL success = gVFS->isValid() && gStaticVFS->isValid();
+	if (!success)
+	{
+		return false;
+	}
+	else
+	{
+		LLVFile::initClass();
+
+#ifndef LL_RELEASE_FOR_DOWNLOAD
+		if (gSavedSettings.getBOOL("DumpVFSCaches"))
+		{
+			dumpVFSCaches();
+		}
+#endif
+
+		return true;
+	}
 }
 
 void LLAppViewer::addOnIdleCallback(const boost::function<void()>& cb)
diff --git a/indra/newview/llappviewer.h b/indra/newview/llappviewer.h
index 902b94d495..5332fe2deb 100644
--- a/indra/newview/llappviewer.h
+++ b/indra/newview/llappviewer.h
@@ -1,6 +1,5 @@
 /** 
  * @mainpage
- * @mainpage
  *
  * This is the sources for the Second Life Viewer;
  * information on the open source project is at 
@@ -83,7 +82,7 @@ public:
 	virtual bool frame(); // Override for application body logic
 
 	// Application control
-	void flushLFSIO(); // waits for lfs transfers to complete
+	void flushVFSIO(); // waits for vfs transfers to complete
 	void forceQuit(); // Puts the viewer into 'shutting down without error' mode.
 	void fastQuit(S32 error_code = 0); // Shuts down the viewer immediately after sending a logout message
 	void requestQuit(); // Request a quit. A kinder, gentler quit.
@@ -382,6 +381,12 @@ extern BOOL			gRestoreGL;
 extern bool		gUseWireframe;
 extern bool		gInitialDeferredModeForWireframe;
 
+// VFS globals - gVFS is for general use
+// gStaticVFS is read-only and is shipped w/ the viewer
+// it has pre-cache data like the UI .TGAs
+class LLVFS;
+extern LLVFS	*gStaticVFS;
+
 extern LLMemoryInfo gSysMemory;
 extern U64Bytes gMemoryAllocated;
 
diff --git a/indra/newview/llappviewerwin32.cpp b/indra/newview/llappviewerwin32.cpp
index 84ffb3551d..9b1c0d1f8b 100644
--- a/indra/newview/llappviewerwin32.cpp
+++ b/indra/newview/llappviewerwin32.cpp
@@ -502,7 +502,7 @@ void LLAppViewerWin32::disableWinErrorReporting()
 	}
 }
 
-const S32 MAX_CONSOLE_LINES = 7500;
+const S32 MAX_CONSOLE_LINES = 500;
 // Only defined in newer SDKs than we currently use
 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4
diff --git a/indra/newview/llcompilequeue.cpp b/indra/newview/llcompilequeue.cpp
index 5d010a6f1e..3aaaaf52f5 100644
--- a/indra/newview/llcompilequeue.cpp
+++ b/indra/newview/llcompilequeue.cpp
@@ -52,7 +52,7 @@
 #include "lldir.h"
 #include "llnotificationsutil.h"
 #include "llviewerstats.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "lluictrlfactory.h"
 #include "lltrans.h"
 
@@ -116,7 +116,7 @@ namespace
 }
 
 // *NOTE$: A minor specialization of LLScriptAssetUpload, it does not require a buffer 
-// (and does not save a buffer to the cache) and it finds the compile queue window and 
+// (and does not save a buffer to the vFS) and it finds the compile queue window and 
 // displays a compiling message.
 class LLQueuedScriptAssetUpload : public LLScriptAssetUpload
 {
@@ -134,8 +134,8 @@ public:
     virtual LLSD prepareUpload()
     {
         /* *NOTE$: The parent class (LLScriptAssetUpload will attempt to save 
-         * the script buffer into to the cache.  Since the resource is already in 
-         * the cache we don't want to do that.  Just put a compiling message in
+         * the script buffer into to the VFS.  Since the resource is already in 
+         * the VFS we don't want to do that.  Just put a compiling message in
          * the window and move on
          */
         LLFloaterCompileQueue* queue = LLFloaterReg::findTypedInstance<LLFloaterCompileQueue>("compile_queue", LLSD(mQueueId));
@@ -283,11 +283,11 @@ void LLFloaterCompileQueue::handleHTTPResponse(std::string pumpName, const LLSD
     LLEventPumps::instance().post(pumpName, expresult);
 }
 
-// *TODO: handleSCriptRetrieval is passed into the cache via a legacy C function pointer
+// *TODO: handleSCriptRetrieval is passed into the VFS via a legacy C function pointer
 // future project would be to convert these to C++ callables (std::function<>) so that 
 // we can use bind and remove the userData parameter.
 // 
-void LLFloaterCompileQueue::handleScriptRetrieval(const LLUUID& assetId, 
+void LLFloaterCompileQueue::handleScriptRetrieval(LLVFS *vfs, const LLUUID& assetId, 
     LLAssetType::EType type, void* userData, S32 status, LLExtStat extStatus)
 {
     LLSD result(LLSD::emptyMap());
diff --git a/indra/newview/llcompilequeue.h b/indra/newview/llcompilequeue.h
index a9bac345b5..adb854875a 100644
--- a/indra/newview/llcompilequeue.h
+++ b/indra/newview/llcompilequeue.h
@@ -135,7 +135,7 @@ protected:
 
     //bool checkAssetId(const LLUUID &assetId);
     static void handleHTTPResponse(std::string pumpName, const LLSD &expresult);
-    static void handleScriptRetrieval(const LLUUID& assetId, LLAssetType::EType type, void* userData, S32 status, LLExtStat extStatus);
+    static void handleScriptRetrieval(LLVFS *vfs, const LLUUID& assetId, LLAssetType::EType type, void* userData, S32 status, LLExtStat extStatus);
 
 private:
     static void processExperienceIdResults(LLSD result, LLUUID parent);
diff --git a/indra/newview/llfilepicker.h b/indra/newview/llfilepicker.h
index 04ba4416d7..2fc496a144 100644
--- a/indra/newview/llfilepicker.h
+++ b/indra/newview/llfilepicker.h
@@ -136,7 +136,7 @@ public:
 
 	S32 getFileCount() const { return (S32)mFiles.size(); }
 
-	// see lldir.h : getBaseFileName and getDirName to extract base or directory names
+	// See llvfs/lldir.h : getBaseFileName and getDirName to extract base or directory names
 	
 	// clear any lists of buffers or whatever, and make sure the file
 	// picker isn't locked.
diff --git a/indra/newview/llfloaterauction.cpp b/indra/newview/llfloaterauction.cpp
index 9813156bf2..957b2e1e8e 100644
--- a/indra/newview/llfloaterauction.cpp
+++ b/indra/newview/llfloaterauction.cpp
@@ -32,7 +32,8 @@
 #include "llimagej2c.h"
 #include "llimagetga.h"
 #include "llparcel.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llwindow.h"
 #include "message.h"
 
@@ -201,9 +202,7 @@ void LLFloaterAuction::onClickSnapshot(void* data)
 
 		LLPointer<LLImageTGA> tga = new LLImageTGA;
 		tga->encode(raw);
-
-		LLFileSystem tga_file(self->mImageID, LLAssetType::AT_IMAGE_TGA, LLFileSystem::WRITE);
-		tga_file.write(tga->getData(), tga->getDataSize());
+		LLVFile::writeFile(tga->getData(), tga->getDataSize(), gVFS, self->mImageID, LLAssetType::AT_IMAGE_TGA);
 		
 		raw->biasedScaleToPowerOfTwo(LLViewerTexture::MAX_IMAGE_SIZE_DEFAULT);
 
@@ -211,9 +210,7 @@ void LLFloaterAuction::onClickSnapshot(void* data)
 
 		LLPointer<LLImageJ2C> j2c = new LLImageJ2C;
 		j2c->encode(raw, 0.0f);
-
-		LLFileSystem j2c_file(self->mImageID, LLAssetType::AT_TEXTURE, LLFileSystem::WRITE);
-		j2c_file.write(j2c->getData(), j2c->getDataSize());
+		LLVFile::writeFile(j2c->getData(), j2c->getDataSize(), gVFS, self->mImageID, LLAssetType::AT_TEXTURE);
 
 		self->mImage = LLViewerTextureManager::getLocalTexture((LLImageRaw*)raw, FALSE);
 		gGL.getTexUnit(0)->bind(self->mImage);
diff --git a/indra/newview/llfloaterbvhpreview.cpp b/indra/newview/llfloaterbvhpreview.cpp
index 687d820a18..131d9b077b 100644
--- a/indra/newview/llfloaterbvhpreview.cpp
+++ b/indra/newview/llfloaterbvhpreview.cpp
@@ -32,7 +32,7 @@
 #include "lldatapacker.h"
 #include "lldir.h"
 #include "llnotificationsutil.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llapr.h"
 #include "llstring.h"
 
@@ -997,9 +997,10 @@ void LLFloaterBvhPreview::onBtnOK(void* userdata)
 		LLDataPackerBinaryBuffer dp(buffer, file_size);
 		if (motionp->serialize(dp))
 		{
-			LLFileSystem file(motionp->getID(), LLAssetType::AT_ANIMATION, LLFileSystem::APPEND);
+			LLVFile file(gVFS, motionp->getID(), LLAssetType::AT_ANIMATION, LLVFile::APPEND);
 
 			S32 size = dp.getCurrentSize();
+			file.setMaxSize(size);
 			if (file.write((U8*)buffer, size))
 			{
 				std::string name = floaterp->getChild<LLUICtrl>("name_form")->getValue().asString();
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 481a7dab66..b9c03f66a3 100644
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -59,7 +59,6 @@
 #include "llspinctrl.h"
 #include "lltabcontainer.h"
 #include "lltrans.h"
-#include "llfilesystem.h"
 #include "llcallbacklist.h"
 #include "llviewertexteditor.h"
 #include "llviewernetwork.h"
diff --git a/indra/newview/llfloaterpreference.h b/indra/newview/llfloaterpreference.h
index f99d0e6150..526214a617 100644
--- a/indra/newview/llfloaterpreference.h
+++ b/indra/newview/llfloaterpreference.h
@@ -107,7 +107,7 @@ protected:
 	void		onBtnOK(const LLSD& userdata);
 	void		onBtnCancel(const LLSD& userdata);
 
-	void		onClickClearCache();			// Clear viewer texture cache, file cache on next startup
+	void		onClickClearCache();			// Clear viewer texture cache, vfs, and VO cache on next startup
 	void		onClickBrowserClearCache();		// Clear web history and caches as well as viewer caches above
 	void		onLanguageChange();
 	void		onNotificationsChange(const std::string& OptionName);
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index 0375c15467..ec1909d02a 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -36,7 +36,7 @@
 #include "llglheaders.h"
 #include "llregionflags.h"
 #include "llstl.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llxfermanager.h"
 #include "indra_constants.h"
 #include "message.h"
@@ -2229,9 +2229,10 @@ void LLPanelEstateCovenant::loadInvItem(LLInventoryItem *itemp)
 }
 
 // static
-void LLPanelEstateCovenant::onLoadComplete(const LLUUID& asset_uuid,
-									       LLAssetType::EType type,
-									       void* user_data, S32 status, LLExtStat ext_status)
+void LLPanelEstateCovenant::onLoadComplete(LLVFS *vfs,
+									   const LLUUID& asset_uuid,
+									   LLAssetType::EType type,
+									   void* user_data, S32 status, LLExtStat ext_status)
 {
 	LL_INFOS() << "LLPanelEstateCovenant::onLoadComplete()" << LL_ENDL;
 	LLPanelEstateCovenant* panelp = (LLPanelEstateCovenant*)user_data;
@@ -2239,7 +2240,7 @@ void LLPanelEstateCovenant::onLoadComplete(const LLUUID& asset_uuid,
 	{
 		if(0 == status)
 		{
-			LLFileSystem file(asset_uuid, type, LLFileSystem::READ);
+			LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
 
 			S32 file_length = file.getSize();
 
diff --git a/indra/newview/llfloaterregioninfo.h b/indra/newview/llfloaterregioninfo.h
index c34dbb62e8..75d0c3ea5c 100644
--- a/indra/newview/llfloaterregioninfo.h
+++ b/indra/newview/llfloaterregioninfo.h
@@ -55,6 +55,7 @@ class LLRadioGroup;
 class LLSliderCtrl;
 class LLSpinCtrl;
 class LLTextBox;
+class LLVFS;
 
 class LLPanelRegionGeneralInfo;
 class LLPanelRegionDebugInfo;
@@ -356,7 +357,8 @@ public:
 	static bool confirmResetCovenantCallback(const LLSD& notification, const LLSD& response);
 	void sendChangeCovenantID(const LLUUID &asset_id);
 	void loadInvItem(LLInventoryItem *itemp);
-	static void onLoadComplete(const LLUUID& asset_uuid,
+	static void onLoadComplete(LLVFS *vfs,
+							   const LLUUID& asset_uuid,
 							   LLAssetType::EType type,
 							   void* user_data, S32 status, LLExtStat ext_status);
 
diff --git a/indra/newview/llfloaterreporter.cpp b/indra/newview/llfloaterreporter.cpp
index 5d0e2bbc55..7bfba2a6d7 100644
--- a/indra/newview/llfloaterreporter.cpp
+++ b/indra/newview/llfloaterreporter.cpp
@@ -44,7 +44,8 @@
 #include "llnotificationsutil.h"
 #include "llstring.h"
 #include "llsys.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "mean_collision_data.h"
 #include "message.h"
 #include "v3math.h"
@@ -898,9 +899,12 @@ void LLFloaterReporter::takeScreenshot(bool use_prev_screenshot)
 	mResourceDatap->mAssetInfo.setName("screenshot_name");
 	mResourceDatap->mAssetInfo.setDescription("screenshot_descr");
 
-	// store in cache
-    LLFileSystem j2c_file(mResourceDatap->mAssetInfo.mUuid, mResourceDatap->mAssetInfo.mType, LLFileSystem::WRITE);
-    j2c_file.write(upload_data->getData(), upload_data->getDataSize());
+	// store in VFS
+	LLVFile::writeFile(upload_data->getData(), 
+						upload_data->getDataSize(), 
+						gVFS, 
+						mResourceDatap->mAssetInfo.mUuid, 
+						mResourceDatap->mAssetInfo.mType);
 
 	// store in the image list so it doesn't try to fetch from the server
 	LLPointer<LLViewerFetchedTexture> image_in_list = 
diff --git a/indra/newview/llfloatertos.cpp b/indra/newview/llfloatertos.cpp
index 1aeb727172..bd403f68d7 100644
--- a/indra/newview/llfloatertos.cpp
+++ b/indra/newview/llfloatertos.cpp
@@ -40,7 +40,7 @@
 #include "lltextbox.h"
 #include "llui.h"
 #include "lluictrlfactory.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "message.h"
 #include "llstartup.h"              // login_alert_done
 #include "llcorehttputil.h"
diff --git a/indra/newview/llfloatertos.h b/indra/newview/llfloatertos.h
index 7c2f0705b7..85033acf4d 100644
--- a/indra/newview/llfloatertos.h
+++ b/indra/newview/llfloatertos.h
@@ -36,6 +36,7 @@
 
 class LLButton;
 class LLRadioGroup;
+class LLVFS;
 class LLTextEditor;
 class LLUUID;
 
diff --git a/indra/newview/llgesturemgr.cpp b/indra/newview/llgesturemgr.cpp
index 9f2119281d..950a6cfaef 100644
--- a/indra/newview/llgesturemgr.cpp
+++ b/indra/newview/llgesturemgr.cpp
@@ -42,7 +42,7 @@
 #include "llnotificationsutil.h"
 #include "llstl.h"
 #include "llstring.h"	// todo: remove
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "message.h"
 
 // newview
@@ -548,7 +548,7 @@ void LLGestureMgr::playGesture(LLMultiGesture* gesture)
 				LLGestureStepAnimation* anim_step = (LLGestureStepAnimation*)step;
 				const LLUUID& anim_id = anim_step->mAnimAssetID;
 
-				// Don't request the animation if this step stops it or if it is already in the cache
+				// Don't request the animation if this step stops it or if it is already in Static VFS
 				if (!(anim_id.isNull()
 					  || anim_step->mFlags & ANIM_FLAG_STOP
 					  || gAssetStorage->hasLocalAsset(anim_id, LLAssetType::AT_ANIMATION)))
@@ -1038,9 +1038,10 @@ void LLGestureMgr::runStep(LLMultiGesture* gesture, LLGestureStep* step)
 
 
 // static
-void LLGestureMgr::onLoadComplete(const LLUUID& asset_uuid,
-								  LLAssetType::EType type,
-								  void* user_data, S32 status, LLExtStat ext_status)
+void LLGestureMgr::onLoadComplete(LLVFS *vfs,
+									   const LLUUID& asset_uuid,
+									   LLAssetType::EType type,
+									   void* user_data, S32 status, LLExtStat ext_status)
 {
 	LLLoadInfo* info = (LLLoadInfo*)user_data;
 
@@ -1055,7 +1056,7 @@ void LLGestureMgr::onLoadComplete(const LLUUID& asset_uuid,
 
 	if (0 == status)
 	{
-		LLFileSystem file(asset_uuid, type, LLFileSystem::READ);
+		LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
 		S32 size = file.getSize();
 
 		std::vector<char> buffer(size+1);
@@ -1158,7 +1159,8 @@ void LLGestureMgr::onLoadComplete(const LLUUID& asset_uuid,
 }
 
 // static
-void LLGestureMgr::onAssetLoadComplete(const LLUUID& asset_uuid,
+void LLGestureMgr::onAssetLoadComplete(LLVFS *vfs,
+									   const LLUUID& asset_uuid,
 									   LLAssetType::EType type,
 									   void* user_data, S32 status, LLExtStat ext_status)
 {
@@ -1170,7 +1172,7 @@ void LLGestureMgr::onAssetLoadComplete(const LLUUID& asset_uuid,
 	{
 	case LLAssetType::AT_ANIMATION:
 		{
-			LLKeyframeMotion::onLoadComplete(asset_uuid, type, user_data, status, ext_status);
+			LLKeyframeMotion::onLoadComplete(vfs, asset_uuid, type, user_data, status, ext_status);
 
 			self.mLoadingAssets.erase(asset_uuid);
 
@@ -1178,7 +1180,7 @@ void LLGestureMgr::onAssetLoadComplete(const LLUUID& asset_uuid,
 		}
 	case LLAssetType::AT_SOUND:
 		{
-			LLAudioEngine::assetCallback(asset_uuid, type, user_data, status, ext_status);
+			LLAudioEngine::assetCallback(vfs, asset_uuid, type, user_data, status, ext_status);
 
 			self.mLoadingAssets.erase(asset_uuid);
 
diff --git a/indra/newview/llgesturemgr.h b/indra/newview/llgesturemgr.h
index 91ab445273..402bdf6039 100644
--- a/indra/newview/llgesturemgr.h
+++ b/indra/newview/llgesturemgr.h
@@ -40,6 +40,7 @@ class LLMultiGesture;
 class LLGestureListener;
 class LLGestureStep;
 class LLUUID;
+class LLVFS;
 
 class LLGestureManagerObserver
 {
@@ -153,13 +154,15 @@ protected:
 	void done();
 
 	// Used by loadGesture
-	static void onLoadComplete(const LLUUID& asset_uuid,
-					           LLAssetType::EType type,
-						       void* user_data, S32 status, LLExtStat ext_status);
+	static void onLoadComplete(LLVFS *vfs,
+						   const LLUUID& asset_uuid,
+						   LLAssetType::EType type,
+						   void* user_data, S32 status, LLExtStat ext_status);
 
 	// Used by playGesture to load an asset file
 	// required to play a gesture step
-	static void onAssetLoadComplete(const LLUUID& asset_uuid,
+	static void onAssetLoadComplete(LLVFS *vfs,
+									const LLUUID& asset_uuid,
 									LLAssetType::EType type,
 									void* user_data, S32 status, LLExtStat ext_status);
 
diff --git a/indra/newview/lllandmarklist.cpp b/indra/newview/lllandmarklist.cpp
index 2966ca1f10..b4236c406b 100644
--- a/indra/newview/lllandmarklist.cpp
+++ b/indra/newview/lllandmarklist.cpp
@@ -33,7 +33,7 @@
 
 #include "llappviewer.h"
 #include "llagent.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llviewerstats.h"
 
 // Globals
@@ -118,6 +118,7 @@ LLLandmark* LLLandmarkList::getAsset(const LLUUID& asset_uuid, loaded_callback_t
 
 // static
 void LLLandmarkList::processGetAssetReply(
+	LLVFS *vfs,
 	const LLUUID& uuid,
 	LLAssetType::EType type,
 	void* user_data,
@@ -126,7 +127,7 @@ void LLLandmarkList::processGetAssetReply(
 {
 	if( status == 0 )
 	{
-		LLFileSystem file(uuid, type);
+		LLVFile file(vfs, uuid, type);
 		S32 file_length = file.getSize();
 
 		std::vector<char> buffer(file_length + 1);
diff --git a/indra/newview/lllandmarklist.h b/indra/newview/lllandmarklist.h
index 0e4859dbc9..2e7bd25610 100644
--- a/indra/newview/lllandmarklist.h
+++ b/indra/newview/lllandmarklist.h
@@ -52,6 +52,7 @@ public:
 	BOOL assetExists(const LLUUID& asset_uuid);
 	LLLandmark* getAsset(const LLUUID& asset_uuid, loaded_callback_t cb = NULL);
 	static void processGetAssetReply(
+		LLVFS *vfs,
 		const LLUUID& uuid,
 		LLAssetType::EType type,
 		void* user_data,
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index 8e5bdc0225..3e8731dfe6 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -49,7 +49,7 @@
 #include "llsdutil_math.h"
 #include "llsdserialize.h"
 #include "llthread.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llviewercontrol.h"
 #include "llviewerinventory.h"
 #include "llviewermenufile.h"
@@ -294,6 +294,8 @@
 //   * Header parse failures come without much explanation.  Elaborate.
 //   * Work queue for uploads?  Any need for this or is the current scheme good
 //     enough?
+//   * Various temp buffers used in VFS I/O might be allocated once or even
+//     statically.  Look for some wins here.
 //   * Move data structures holding mesh data used by main thread into main-
 //     thread-only access so that no locking is needed.  May require duplication
 //     of some data so that worker thread has a minimal data set to guide
@@ -1334,8 +1336,8 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id)
 
 		if (version <= MAX_MESH_VERSION && offset >= 0 && size > 0)
 		{
-			//check cache for mesh skin info
-			LLFileSystem file(mesh_id, LLAssetType::AT_MESH);
+			//check VFS for mesh skin info
+			LLVFile file(gVFS, mesh_id, LLAssetType::AT_MESH);
 			if (file.getSize() >= offset+size)
 			{
 				U8* buffer = new(std::nothrow) U8[size];
@@ -1368,7 +1370,7 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id)
 				delete[] buffer;
 			}
 
-			//reading from cache failed for whatever reason, fetch from sim
+			//reading from VFS failed for whatever reason, fetch from sim
 			std::string http_url;
 			constructUrl(mesh_id, &http_url);
 
@@ -1430,8 +1432,8 @@ bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
 
 		if (version <= MAX_MESH_VERSION && offset >= 0 && size > 0)
 		{
-			//check cache for mesh skin info
-			LLFileSystem file(mesh_id, LLAssetType::AT_MESH);
+			//check VFS for mesh skin info
+			LLVFile file(gVFS, mesh_id, LLAssetType::AT_MESH);
 			if (file.getSize() >= offset+size)
 			{
 				U8* buffer = new(std::nothrow) U8[size];
@@ -1465,7 +1467,7 @@ bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
 				delete[] buffer;
 			}
 
-			//reading from cache failed for whatever reason, fetch from sim
+			//reading from VFS failed for whatever reason, fetch from sim
 			std::string http_url;
 			constructUrl(mesh_id, &http_url);
 			
@@ -1527,8 +1529,8 @@ bool LLMeshRepoThread::fetchMeshPhysicsShape(const LLUUID& mesh_id)
 
 		if (version <= MAX_MESH_VERSION && offset >= 0 && size > 0)
 		{
-			//check cache for mesh physics shape info
-			LLFileSystem file(mesh_id, LLAssetType::AT_MESH);
+			//check VFS for mesh physics shape info
+			LLVFile file(gVFS, mesh_id, LLAssetType::AT_MESH);
 			if (file.getSize() >= offset+size)
 			{
 				LLMeshRepository::sCacheBytesRead += size;
@@ -1561,7 +1563,7 @@ bool LLMeshRepoThread::fetchMeshPhysicsShape(const LLUUID& mesh_id)
 				delete[] buffer;
 			}
 
-			//reading from cache failed for whatever reason, fetch from sim
+			//reading from VFS failed for whatever reason, fetch from sim
 			std::string http_url;
 			constructUrl(mesh_id, &http_url);
 			
@@ -1632,8 +1634,8 @@ bool LLMeshRepoThread::fetchMeshHeader(const LLVolumeParams& mesh_params, bool c
 	++LLMeshRepository::sMeshRequestCount;
 
 	{
-		//look for mesh in asset in cache
-		LLFileSystem file(mesh_params.getSculptID(), LLAssetType::AT_MESH);
+		//look for mesh in asset in vfs
+		LLVFile file(gVFS, mesh_params.getSculptID(), LLAssetType::AT_MESH);
 			
 		S32 size = file.getSize();
 
@@ -1647,7 +1649,7 @@ bool LLMeshRepoThread::fetchMeshHeader(const LLVolumeParams& mesh_params, bool c
 			file.read(buffer, bytes);
 			if (headerReceived(mesh_params, buffer, bytes) == MESH_OK)
 			{
-				// Found mesh in cache
+				// Found mesh in VFS cache
 				return true;
 			}
 		}
@@ -1711,8 +1713,8 @@ bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod,
 		if (version <= MAX_MESH_VERSION && offset >= 0 && size > 0)
 		{
 
-			//check cache for mesh asset
-			LLFileSystem file(mesh_id, LLAssetType::AT_MESH);
+			//check VFS for mesh asset
+			LLVFile file(gVFS, mesh_id, LLAssetType::AT_MESH);
 			if (file.getSize() >= offset+size)
 			{
 				U8* buffer = new(std::nothrow) U8[size];
@@ -1747,7 +1749,7 @@ bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod,
 				delete[] buffer;
 			}
 
-			//reading from cache failed for whatever reason, fetch from sim
+			//reading from VFS failed for whatever reason, fetch from sim
 			std::string http_url;
 			constructUrl(mesh_id, &http_url);
 			
@@ -3206,7 +3208,7 @@ void LLMeshHeaderHandler::processData(LLCore::BufferArray * /* body */, S32 /* b
 	}
 	else if (data && data_size > 0)
 	{
-		// header was successfully retrieved from sim and parsed and is in cache
+		// header was successfully retrieved from sim and parsed, cache in vfs
 		S32 header_bytes = 0;
 		LLSD header;
 
@@ -3245,16 +3247,31 @@ void LLMeshHeaderHandler::processData(LLCore::BufferArray * /* body */, S32 /* b
 
 		
 			// It's possible for the remote asset to have more data than is needed for the local cache
-			// only allocate as much space in the cache as is needed for the local cache
+			// only allocate as much space in the VFS as is needed for the local cache
 			data_size = llmin(data_size, bytes);
 
-			LLFileSystem file(mesh_id, LLAssetType::AT_MESH, LLFileSystem::WRITE);
-			if (file.getMaxSize() >= bytes)
+			LLVFile file(gVFS, mesh_id, LLAssetType::AT_MESH, LLVFile::WRITE);
+			if (file.getMaxSize() >= bytes || file.setMaxSize(bytes))
 			{
 				LLMeshRepository::sCacheBytesWritten += data_size;
 				++LLMeshRepository::sCacheWrites;
 
 				file.write(data, data_size);
+			
+				// zero out the rest of the file 
+				U8 block[MESH_HEADER_SIZE];
+				memset(block, 0, sizeof(block));
+
+				while (bytes-file.tell() > sizeof(block))
+				{
+					file.write(block, sizeof(block));
+				}
+
+				S32 remaining = bytes-file.tell();
+				if (remaining > 0)
+				{
+					file.write(block, remaining);
+				}
 			}
 		}
 		else
@@ -3306,8 +3323,8 @@ void LLMeshLODHandler::processData(LLCore::BufferArray * /* body */, S32 /* body
 		EMeshProcessingResult result = gMeshRepo.mThread->lodReceived(mMeshParams, mLOD, data, data_size);
 		if (result == MESH_OK)
 		{
-			// good fetch from sim, write to cache
-			LLFileSystem file(mMeshParams.getSculptID(), LLAssetType::AT_MESH, LLFileSystem::WRITE);
+			// good fetch from sim, write to VFS for caching
+			LLVFile file(gVFS, mMeshParams.getSculptID(), LLAssetType::AT_MESH, LLVFile::WRITE);
 
 			S32 offset = mOffset;
 			S32 size = mRequestedBytes;
@@ -3370,8 +3387,8 @@ void LLMeshSkinInfoHandler::processData(LLCore::BufferArray * /* body */, S32 /*
 		&& ((data != NULL) == (data_size > 0)) // if we have data but no size or have size but no data, something is wrong
 		&& gMeshRepo.mThread->skinInfoReceived(mMeshID, data, data_size))
 	{
-		// good fetch from sim, write to cache
-		LLFileSystem file(mMeshID, LLAssetType::AT_MESH, LLFileSystem::WRITE);
+		// good fetch from sim, write to VFS for caching
+		LLVFile file(gVFS, mMeshID, LLAssetType::AT_MESH, LLVFile::WRITE);
 
 		S32 offset = mOffset;
 		S32 size = mRequestedBytes;
@@ -3418,8 +3435,8 @@ void LLMeshDecompositionHandler::processData(LLCore::BufferArray * /* body */, S
 		&& ((data != NULL) == (data_size > 0)) // if we have data but no size or have size but no data, something is wrong
 		&& gMeshRepo.mThread->decompositionReceived(mMeshID, data, data_size))
 	{
-		// good fetch from sim, write to cache
-		LLFileSystem file(mMeshID, LLAssetType::AT_MESH, LLFileSystem::WRITE);
+		// good fetch from sim, write to VFS for caching
+		LLVFile file(gVFS, mMeshID, LLAssetType::AT_MESH, LLVFile::WRITE);
 
 		S32 offset = mOffset;
 		S32 size = mRequestedBytes;
@@ -3465,8 +3482,8 @@ void LLMeshPhysicsShapeHandler::processData(LLCore::BufferArray * /* body */, S3
 		&& ((data != NULL) == (data_size > 0)) // if we have data but no size or have size but no data, something is wrong
 		&& gMeshRepo.mThread->physicsShapeReceived(mMeshID, data, data_size) == MESH_OK)
 	{
-		// good fetch from sim, write to cache for caching
-		LLFileSystem file(mMeshID, LLAssetType::AT_MESH, LLFileSystem::WRITE);
+		// good fetch from sim, write to VFS for caching
+		LLVFile file(gVFS, mMeshID, LLAssetType::AT_MESH, LLVFile::WRITE);
 
 		S32 offset = mOffset;
 		S32 size = mRequestedBytes;
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
index 441264d42f..81e49cb1d8 100644
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -48,6 +48,7 @@
 class LLVOVolume;
 class LLMutex;
 class LLCondition;
+class LLVFS;
 class LLMeshRepository;
 
 typedef enum e_mesh_processing_result_enum
diff --git a/indra/newview/lloutfitgallery.cpp b/indra/newview/lloutfitgallery.cpp
index 90f6d23a61..272e7ae351 100644
--- a/indra/newview/lloutfitgallery.cpp
+++ b/indra/newview/lloutfitgallery.cpp
@@ -32,7 +32,7 @@
 
 // llcommon
 #include "llcommonutils.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 
 #include "llaccordionctrltab.h"
 #include "llappearancemgr.h"
diff --git a/indra/newview/lloutfitgallery.h b/indra/newview/lloutfitgallery.h
index ce5c090134..6dd8a6298f 100644
--- a/indra/newview/lloutfitgallery.h
+++ b/indra/newview/lloutfitgallery.h
@@ -38,6 +38,7 @@
 
 #include <vector>
 
+class LLVFS;
 class LLOutfitGallery;
 class LLOutfitGalleryItem;
 class LLOutfitListGearMenuBase;
diff --git a/indra/newview/llpostcard.cpp b/indra/newview/llpostcard.cpp
index 071fc31d27..d5775042c1 100644
--- a/indra/newview/llpostcard.cpp
+++ b/indra/newview/llpostcard.cpp
@@ -28,7 +28,8 @@
 
 #include "llpostcard.h"
 
-#include "llfilesystem.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llviewerregion.h"
 
 #include "message.h"
diff --git a/indra/newview/llpreviewgesture.cpp b/indra/newview/llpreviewgesture.cpp
index 4318a55704..70ce275734 100644
--- a/indra/newview/llpreviewgesture.cpp
+++ b/indra/newview/llpreviewgesture.cpp
@@ -30,7 +30,7 @@
 #include "llagent.h"
 #include "llanimstatelabels.h"
 #include "llanimationstates.h"
-#include "llappviewer.h"
+#include "llappviewer.h"			// gVFS
 #include "llcheckboxctrl.h"
 #include "llcombobox.h"
 #include "lldatapacker.h"
@@ -47,7 +47,7 @@
 #include "llradiogroup.h"
 #include "llresmgr.h"
 #include "lltrans.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llviewerobjectlist.h"
 #include "llviewerregion.h"
 #include "llviewerstats.h"
@@ -841,9 +841,10 @@ void LLPreviewGesture::loadAsset()
 
 
 // static
-void LLPreviewGesture::onLoadComplete(const LLUUID& asset_uuid,
-									  LLAssetType::EType type,
-									  void* user_data, S32 status, LLExtStat ext_status)
+void LLPreviewGesture::onLoadComplete(LLVFS *vfs,
+									   const LLUUID& asset_uuid,
+									   LLAssetType::EType type,
+									   void* user_data, S32 status, LLExtStat ext_status)
 {
 	LLUUID* item_idp = (LLUUID*)user_data;
 
@@ -852,7 +853,7 @@ void LLPreviewGesture::onLoadComplete(const LLUUID& asset_uuid,
 	{
 		if (0 == status)
 		{
-			LLFileSystem file(asset_uuid, type, LLFileSystem::READ);
+			LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
 			S32 size = file.getSize();
 
 			std::vector<char> buffer(size+1);
@@ -1137,9 +1138,10 @@ void LLPreviewGesture::saveIfNeeded()
             tid.generate();
             assetId = tid.makeAssetID(gAgent.getSecureSessionID());
 
-            LLFileSystem file(assetId, LLAssetType::AT_GESTURE, LLFileSystem::APPEND);
+            LLVFile file(gVFS, assetId, LLAssetType::AT_GESTURE, LLVFile::APPEND);
 
             S32 size = dp.getCurrentSize();
+            file.setMaxSize(size);
             file.write((U8*)buffer, size);
 
             LLLineEditor* descEditor = getChild<LLLineEditor>("desc");
diff --git a/indra/newview/llpreviewgesture.h b/indra/newview/llpreviewgesture.h
index 19bccf35bd..3ba4f56295 100644
--- a/indra/newview/llpreviewgesture.h
+++ b/indra/newview/llpreviewgesture.h
@@ -39,6 +39,7 @@ class LLScrollListCtrl;
 class LLScrollListItem;
 class LLButton;
 class LLRadioGroup;
+class LLVFS;
 
 class LLPreviewGesture : public LLPreview
 {
@@ -79,7 +80,8 @@ protected:
 
 	void loadAsset();
 
-	static void onLoadComplete(const LLUUID& asset_uuid,
+	static void onLoadComplete(LLVFS *vfs,
+							   const LLUUID& asset_uuid,
 							   LLAssetType::EType type,
 							   void* user_data, S32 status, LLExtStat ext_status);
 
diff --git a/indra/newview/llpreviewnotecard.cpp b/indra/newview/llpreviewnotecard.cpp
index a7bb5c8236..1b60610668 100644
--- a/indra/newview/llpreviewnotecard.cpp
+++ b/indra/newview/llpreviewnotecard.cpp
@@ -46,7 +46,7 @@
 #include "llselectmgr.h"
 #include "lltrans.h"
 #include "llviewertexteditor.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llviewerinventory.h"
 #include "llviewerobject.h"
 #include "llviewerobjectlist.h"
@@ -327,7 +327,8 @@ void LLPreviewNotecard::loadAsset()
 }
 
 // static
-void LLPreviewNotecard::onLoadComplete(const LLUUID& asset_uuid,
+void LLPreviewNotecard::onLoadComplete(LLVFS *vfs,
+									   const LLUUID& asset_uuid,
 									   LLAssetType::EType type,
 									   void* user_data, S32 status, LLExtStat ext_status)
 {
@@ -338,7 +339,7 @@ void LLPreviewNotecard::onLoadComplete(const LLUUID& asset_uuid,
 	{
 		if(0 == status)
 		{
-			LLFileSystem file(asset_uuid, type, LLFileSystem::READ);
+			LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
 
 			S32 file_length = file.getSize();
 
@@ -445,7 +446,7 @@ void LLPreviewNotecard::finishInventoryUpload(LLUUID itemId, LLUUID newAssetId,
     LLPreviewNotecard* nc = LLFloaterReg::findTypedInstance<LLPreviewNotecard>("preview_notecard", LLSD(itemId));
     if (nc)
     {
-        // *HACK: we have to delete the asset in the cache so
+        // *HACK: we have to delete the asset in the VFS so
         // that the viewer will redownload it. This is only
         // really necessary if the asset had to be modified by
         // the uploader, so this can be optimized away in some
@@ -453,7 +454,7 @@ void LLPreviewNotecard::finishInventoryUpload(LLUUID itemId, LLUUID newAssetId,
         // script actually changed the asset.
         if (nc->hasEmbeddedInventory())
         {
-            LLFileSystem::removeFile(newAssetId, LLAssetType::AT_NOTECARD);
+            gVFS->removeFile(newAssetId, LLAssetType::AT_NOTECARD);
         }
         if (newItemId.isNull())
         {
@@ -478,7 +479,7 @@ void LLPreviewNotecard::finishTaskUpload(LLUUID itemId, LLUUID newAssetId, LLUUI
     {
         if (nc->hasEmbeddedInventory())
         {
-            LLFileSystem::removeFile(newAssetId, LLAssetType::AT_NOTECARD);
+            gVFS->removeFile(newAssetId, LLAssetType::AT_NOTECARD);
         }
         nc->setAssetId(newAssetId);
         nc->refreshFromInventory();
@@ -557,13 +558,14 @@ bool LLPreviewNotecard::saveIfNeeded(LLInventoryItem* copyitem, bool sync)
                 tid.generate();
                 asset_id = tid.makeAssetID(gAgent.getSecureSessionID());
 
-                LLFileSystem file(asset_id, LLAssetType::AT_NOTECARD, LLFileSystem::APPEND);
+                LLVFile file(gVFS, asset_id, LLAssetType::AT_NOTECARD, LLVFile::APPEND);
 
 
 				LLSaveNotecardInfo* info = new LLSaveNotecardInfo(this, mItemUUID, mObjectUUID,
 																tid, copyitem);
 
                 S32 size = buffer.length() + 1;
+                file.setMaxSize(size);
                 file.write((U8*)buffer.c_str(), size);
 
 				gAssetStorage->storeAssetData(tid, LLAssetType::AT_NOTECARD,
diff --git a/indra/newview/llpreviewnotecard.h b/indra/newview/llpreviewnotecard.h
index 063a01ca47..d9c14815c1 100644
--- a/indra/newview/llpreviewnotecard.h
+++ b/indra/newview/llpreviewnotecard.h
@@ -83,7 +83,8 @@ protected:
 
 	void deleteNotecard();
 
-	static void onLoadComplete(const LLUUID& asset_uuid,
+	static void onLoadComplete(LLVFS *vfs,
+							   const LLUUID& asset_uuid,
 							   LLAssetType::EType type,
 							   void* user_data, S32 status, LLExtStat ext_status);
 
diff --git a/indra/newview/llpreviewscript.cpp b/indra/newview/llpreviewscript.cpp
index 379bc9871c..5e81fa6402 100644
--- a/indra/newview/llpreviewscript.cpp
+++ b/indra/newview/llpreviewscript.cpp
@@ -51,7 +51,7 @@
 #include "llsdserialize.h"
 #include "llslider.h"
 #include "lltooldraganddrop.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 
 #include "llagent.h"
 #include "llmenugl.h"
@@ -1685,11 +1685,8 @@ void LLPreviewLSL::saveIfNeeded(bool sync /*= true*/)
         {
             std::string buffer(mScriptEd->mEditor->getText());
 
-            LLUUID old_asset_id = inv_item->getAssetUUID().isNull() ? mScriptEd->getAssetID() : inv_item->getAssetUUID();
-
             LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLScriptAssetUpload>(mItemUUID, buffer, 
-                [old_asset_id](LLUUID itemId, LLUUID, LLUUID, LLSD response) {
-                    LLFileSystem::removeFile(old_asset_id, LLAssetType::AT_LSL_TEXT);
+                [](LLUUID itemId, LLUUID, LLUUID, LLSD response) {
                     LLPreviewLSL::finishedLSLUpload(itemId, response);
                 }));
 
@@ -1699,8 +1696,8 @@ void LLPreviewLSL::saveIfNeeded(bool sync /*= true*/)
 }
 
 // static
-void LLPreviewLSL::onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType type,
-								  void* user_data, S32 status, LLExtStat ext_status)
+void LLPreviewLSL::onLoadComplete( LLVFS *vfs, const LLUUID& asset_uuid, LLAssetType::EType type,
+								   void* user_data, S32 status, LLExtStat ext_status)
 {
 	LL_DEBUGS() << "LLPreviewLSL::onLoadComplete: got uuid " << asset_uuid
 		 << LL_ENDL;
@@ -1710,7 +1707,7 @@ void LLPreviewLSL::onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType t
 	{
 		if(0 == status)
 		{
-			LLFileSystem file(asset_uuid, type);
+			LLVFile file(vfs, asset_uuid, type);
 			S32 file_length = file.getSize();
 
 			std::vector<char> buffer(file_length+1);
@@ -1737,7 +1734,6 @@ void LLPreviewLSL::onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType t
 			}
 			preview->mScriptEd->setScriptName(script_name);
 			preview->mScriptEd->setEnableEditing(is_modifiable);
-            preview->mScriptEd->setAssetID(asset_uuid);
 			preview->mAssetStatus = PREVIEW_ASSET_LOADED;
 		}
 		else
@@ -1974,7 +1970,7 @@ void LLLiveLSLEditor::loadAsset()
 }
 
 // static
-void LLLiveLSLEditor::onLoadComplete(const LLUUID& asset_id,
+void LLLiveLSLEditor::onLoadComplete(LLVFS *vfs, const LLUUID& asset_id,
 									 LLAssetType::EType type,
 									 void* user_data, S32 status, LLExtStat ext_status)
 {
@@ -1988,10 +1984,9 @@ void LLLiveLSLEditor::onLoadComplete(const LLUUID& asset_id,
 	{
 		if( LL_ERR_NOERR == status )
 		{
-			instance->loadScriptText(asset_id, type);
+			instance->loadScriptText(vfs, asset_id, type);
 			instance->mScriptEd->setEnableEditing(TRUE);
 			instance->mAssetStatus = PREVIEW_ASSET_LOADED;
-            instance->mScriptEd->setAssetID(asset_id);
 		}
 		else
 		{
@@ -2015,9 +2010,9 @@ void LLLiveLSLEditor::onLoadComplete(const LLUUID& asset_id,
 	delete floater_key;
 }
 
-void LLLiveLSLEditor::loadScriptText(const LLUUID &uuid, LLAssetType::EType type)
+void LLLiveLSLEditor::loadScriptText(LLVFS *vfs, const LLUUID &uuid, LLAssetType::EType type)
 {
-	LLFileSystem file(uuid, type);
+	LLVFile file(vfs, uuid, type);
 	S32 file_length = file.getSize();
 	std::vector<char> buffer(file_length + 1);
 	file.read((U8*)&buffer[0], file_length);
@@ -2171,7 +2166,6 @@ void LLLiveLSLEditor::finishLSLUpload(LLUUID itemId, LLUUID taskId, LLUUID newAs
     if (preview)
     {
         preview->mItem->setAssetUUID(newAssetId);
-        preview->mScriptEd->setAssetID(newAssetId);
 
         // Bytecode save completed
         if (response["compiled"])
@@ -2242,14 +2236,12 @@ void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
     if (!url.empty())
     {
         std::string buffer(mScriptEd->mEditor->getText());
-        LLUUID old_asset_id = mScriptEd->getAssetID();
 
         LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLScriptAssetUpload>(mObjectUUID, mItemUUID, 
                 monoChecked() ? LLScriptAssetUpload::MONO : LLScriptAssetUpload::LSL2, 
                 isRunning, mScriptEd->getAssociatedExperience(), buffer, 
-                [isRunning, old_asset_id](LLUUID itemId, LLUUID taskId, LLUUID newAssetId, LLSD response) { 
-                        LLFileSystem::removeFile(old_asset_id, LLAssetType::AT_LSL_TEXT);
-                        LLLiveLSLEditor::finishLSLUpload(itemId, taskId, newAssetId, response, isRunning);
+                [isRunning](LLUUID itemId, LLUUID taskId, LLUUID newAssetId, LLSD response) { 
+                    LLLiveLSLEditor::finishLSLUpload(itemId, taskId, newAssetId, response, isRunning);
                 }));
 
         LLViewerAssetUpload::EnqueueInventoryUpload(url, uploadInfo);
diff --git a/indra/newview/llpreviewscript.h b/indra/newview/llpreviewscript.h
index 18c10ab365..3cf22a0e6e 100644
--- a/indra/newview/llpreviewscript.h
+++ b/indra/newview/llpreviewscript.h
@@ -48,6 +48,7 @@ struct 	LLEntryAndEdCore;
 class LLMenuBarGL;
 class LLFloaterScriptSearch;
 class LLKeywordToken;
+class LLVFS;
 class LLViewerInventoryItem;
 class LLScriptEdContainer;
 class LLFloaterGotoLine;
@@ -142,9 +143,6 @@ public:
 
 	void 			setItemRemoved(bool script_removed){mScriptRemoved = script_removed;};
 
-    void 			setAssetID( const LLUUID& asset_id){ mAssetID = asset_id; };
-    LLUUID 			getAssetID() { return mAssetID; }
-
 private:
 	void		onBtnDynamicHelp();
 	void		onBtnUndoChanges();
@@ -190,7 +188,6 @@ private:
 	LLUUID			mAssociatedExperience;
 	BOOL			mScriptRemoved;
 	BOOL			mSaveDialogShown;
-    LLUUID          mAssetID;
 
 	LLScriptEdContainer* mContainer; // parent view
 
@@ -237,7 +234,7 @@ protected:
 	static void onLoad(void* userdata);
 	static void onSave(void* userdata, BOOL close_after_save);
 	
-	static void onLoadComplete(const LLUUID& uuid,
+	static void onLoadComplete(LLVFS *vfs, const LLUUID& uuid,
 							   LLAssetType::EType type,
 							   void* user_data, S32 status, LLExtStat ext_status);
 
@@ -298,13 +295,13 @@ private:
 	static void onLoad(void* userdata);
 	static void onSave(void* userdata, BOOL close_after_save);
 
-	static void onLoadComplete(const LLUUID& asset_uuid,
+	static void onLoadComplete(LLVFS *vfs, const LLUUID& asset_uuid,
 							   LLAssetType::EType type,
 							   void* user_data, S32 status, LLExtStat ext_status);
 	static void onRunningCheckboxClicked(LLUICtrl*, void* userdata);
 	static void onReset(void* userdata);
 
-	void loadScriptText(const LLUUID &uuid, LLAssetType::EType type);
+	void loadScriptText(LLVFS *vfs, const LLUUID &uuid, LLAssetType::EType type);
 
 	static void onErrorList(LLUICtrl*, void* user_data);
 
diff --git a/indra/newview/llsettingsvo.cpp b/indra/newview/llsettingsvo.cpp
index 58cbe0e20a..1e5b893cbc 100644
--- a/indra/newview/llsettingsvo.cpp
+++ b/indra/newview/llsettingsvo.cpp
@@ -57,7 +57,7 @@
 
 #include "llinventorymodel.h"
 #include "llassetstorage.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "lldrawpoolwater.h"
 
 #include <boost/algorithm/string/replace.hpp>
@@ -292,18 +292,18 @@ void LLSettingsVOBase::onTaskAssetUploadComplete(LLUUID itemId, LLUUID taskId, L
 void LLSettingsVOBase::getSettingsAsset(const LLUUID &assetId, LLSettingsVOBase::asset_download_fn callback)
 {
     gAssetStorage->getAssetData(assetId, LLAssetType::AT_SETTINGS,
-        [callback](const LLUUID &asset_id, LLAssetType::EType, void *, S32 status, LLExtStat ext_status) 
-            { onAssetDownloadComplete(asset_id, status, ext_status, callback); },
+        [callback](LLVFS *vfs, const LLUUID &asset_id, LLAssetType::EType, void *, S32 status, LLExtStat ext_status) 
+            { onAssetDownloadComplete(vfs, asset_id, status, ext_status, callback); },
         nullptr, true);
 
 }
 
-void LLSettingsVOBase::onAssetDownloadComplete(const LLUUID &asset_id, S32 status, LLExtStat ext_status, LLSettingsVOBase::asset_download_fn callback)
+void LLSettingsVOBase::onAssetDownloadComplete(LLVFS *vfs, const LLUUID &asset_id, S32 status, LLExtStat ext_status, LLSettingsVOBase::asset_download_fn callback)
 {
     LLSettingsBase::ptr_t settings;
     if (!status)
     {
-        LLFileSystem file(asset_id, LLAssetType::AT_SETTINGS, LLFileSystem::READ);
+        LLVFile file(vfs, asset_id, LLAssetType::AT_SETTINGS, LLVFile::READ);
         S32 size = file.getSize();
 
         std::string buffer(size + 1, '\0');
diff --git a/indra/newview/llsettingsvo.h b/indra/newview/llsettingsvo.h
index a1baf02fe7..65136ad2f5 100644
--- a/indra/newview/llsettingsvo.h
+++ b/indra/newview/llsettingsvo.h
@@ -38,6 +38,7 @@
 #include "llextendedstatus.h"
 #include <boost/signals2.hpp>
 
+class LLVFS;
 class LLInventoryItem;
 class LLGLSLShader;
 
@@ -80,7 +81,7 @@ private:
     static void     onAgentAssetUploadComplete(LLUUID itemId, LLUUID newAssetId, LLUUID newItemId, LLSD response, LLSettingsBase::ptr_t psettings, inventory_result_fn callback);
     static void     onTaskAssetUploadComplete(LLUUID itemId, LLUUID taskId, LLUUID newAssetId, LLSD response, LLSettingsBase::ptr_t psettings, inventory_result_fn callback);
     
-    static void     onAssetDownloadComplete(const LLUUID &asset_id, S32 status, LLExtStat ext_status, asset_download_fn callback);
+    static void     onAssetDownloadComplete(LLVFS *vfs, const LLUUID &asset_id, S32 status, LLExtStat ext_status, asset_download_fn callback);
 };
 
 //=========================================================================
diff --git a/indra/newview/llsnapshotlivepreview.cpp b/indra/newview/llsnapshotlivepreview.cpp
index 8134187c21..8369def968 100644
--- a/indra/newview/llsnapshotlivepreview.cpp
+++ b/indra/newview/llsnapshotlivepreview.cpp
@@ -31,7 +31,6 @@
 #include "llagentbenefits.h"
 #include "llagentcamera.h"
 #include "llagentui.h"
-#include "llfilesystem.h"
 #include "llcombobox.h"
 #include "llfloaterperms.h"
 #include "llfloaterreg.h"
@@ -51,6 +50,8 @@
 #include "llviewercontrol.h"
 #include "llviewermenufile.h"	// upload_new_resource()
 #include "llviewerstats.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llwindow.h"
 #include "llworld.h"
 #include <boost/filesystem.hpp>
@@ -1005,8 +1006,7 @@ void LLSnapshotLivePreview::saveTexture(BOOL outfit_snapshot, std::string name)
 
 	if (formatted->encode(scaled, 0.0f))
 	{
-        LLFileSystem fmt_file(new_asset_id, LLAssetType::AT_TEXTURE, LLFileSystem::WRITE);
-        fmt_file.write(formatted->getData(), formatted->getDataSize());
+		LLVFile::writeFile(formatted->getData(), formatted->getDataSize(), gVFS, new_asset_id, LLAssetType::AT_TEXTURE);
 		std::string pos_string;
 		LLAgentUI::buildLocationString(pos_string, LLAgentUI::LOCATION_FORMAT_FULL);
 		std::string who_took_it;
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index f281b30a8e..17777c3ceb 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -82,6 +82,7 @@
 #include "llversioninfo.h"
 #include "llviewercontrol.h"
 #include "llviewerhelp.h"
+#include "llvfs.h"
 #include "llxorcipher.h"	// saved password, MAC address
 #include "llwindow.h"
 #include "message.h"
@@ -267,7 +268,7 @@ bool login_alert_status(const LLSD& notification, const LLSD& response);
 void login_packet_failed(void**, S32 result);
 void use_circuit_callback(void**, S32 result);
 void register_viewer_callbacks(LLMessageSystem* msg);
-void asset_callback_nothing(const LLUUID&, LLAssetType::EType, void*, S32);
+void asset_callback_nothing(LLVFS*, const LLUUID&, LLAssetType::EType, void*, S32);
 bool callback_choose_gender(const LLSD& notification, const LLSD& response);
 void init_start_screen(S32 location_id);
 void release_start_screen();
@@ -579,7 +580,7 @@ bool idle_startup()
 			// start the xfer system. by default, choke the downloads
 			// a lot...
 			const S32 VIEWER_MAX_XFER = 3;
-			start_xfer_manager();
+			start_xfer_manager(gVFS);
 			gXferManager->setMaxIncomingXfers(VIEWER_MAX_XFER);
 			F32 xfer_throttle_bps = gSavedSettings.getF32("XferThrottle");
 			if (xfer_throttle_bps > 1.f)
@@ -587,7 +588,7 @@ bool idle_startup()
 				gXferManager->setUseAckThrottling(TRUE);
 				gXferManager->setAckThrottleBPS(xfer_throttle_bps);
 			}
-			gAssetStorage = new LLViewerAssetStorage(msg, gXferManager);
+			gAssetStorage = new LLViewerAssetStorage(msg, gXferManager, gVFS, gStaticVFS);
 
 
 			F32 dropPercent = gSavedSettings.getF32("PacketDropPercentage");
@@ -1003,6 +1004,13 @@ bool idle_startup()
 
 		gViewerWindow->revealIntroPanel();
 
+		// Poke the VFS, which could potentially block for a while if
+		// Windows XP is acting up
+		set_startup_status(0.07f, LLTrans::getString("LoginVerifyingCache"), LLStringUtil::null);
+		display_startup();
+
+		gVFS->pokeFiles();
+
 		LLStartUp::setStartupState( STATE_LOGIN_AUTH_INIT );
 
 		return FALSE;
@@ -2581,7 +2589,7 @@ void register_viewer_callbacks(LLMessageSystem* msg)
 	msg->setHandlerFuncFast(_PREHASH_FeatureDisabled, process_feature_disabled_message);
 }
 
-void asset_callback_nothing(const LLUUID&, LLAssetType::EType, void*, S32)
+void asset_callback_nothing(LLVFS*, const LLUUID&, LLAssetType::EType, void*, S32)
 {
 	// nothing
 }
diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index d4fc6f3de2..a9f19dc32d 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -55,7 +55,6 @@ const S32 TEXTURE_FAST_CACHE_ENTRY_OVERHEAD = sizeof(S32) * 4; //w, h, c, level
 const S32 TEXTURE_FAST_CACHE_DATA_SIZE = 16 * 16 * 4;
 const S32 TEXTURE_FAST_CACHE_ENTRY_SIZE = TEXTURE_FAST_CACHE_DATA_SIZE + TEXTURE_FAST_CACHE_ENTRY_OVERHEAD;
 const F32 TEXTURE_LAZY_PURGE_TIME_LIMIT = .004f; // 4ms. Would be better to autoadjust, but there is a major cache rework in progress.
-const F32 TEXTURE_PRUNING_MAX_TIME = 15.f;
 
 class LLTextureCacheWorker : public LLWorkerClass
 {
@@ -1552,6 +1551,7 @@ void LLTextureCache::readHeaderCache()
 			if (num_entries - empty_entries > sCacheMaxEntries)
 			{
 				// Special case: cache size was reduced, need to remove entries
+				// Note: After we prune entries, we will call this again and create the LRU
 				U32 entries_to_purge = (num_entries - empty_entries) - sCacheMaxEntries;
 				LL_INFOS() << "Texture Cache Entries: " << num_entries << " Max: " << sCacheMaxEntries << " Empty: " << empty_entries << " Purging: " << entries_to_purge << LL_ENDL;
 				// We can exit the following loop with the given condition, since if we'd reach the end of the lru set we'd have:
@@ -1564,7 +1564,7 @@ void LLTextureCache::readHeaderCache()
 					++iter;
 				}
 			}
-
+			else
 			{
 				S32 lru_entries = (S32)((F32)sCacheMaxEntries * TEXTURE_CACHE_LRU_SIZE);
 				for (std::set<lru_data_t>::iterator iter = lru.begin(); iter != lru.end(); ++iter)
@@ -1578,19 +1578,30 @@ void LLTextureCache::readHeaderCache()
 			
 			if (purge_list.size() > 0)
 			{
-				LLTimer timer;
 				for (std::set<U32>::iterator iter = purge_list.begin(); iter != purge_list.end(); ++iter)
 				{
 					std::string tex_filename = getTextureFileName(entries[*iter].mID);
 					removeEntry((S32)*iter, entries[*iter], tex_filename);
-
-					//make sure that pruning entries doesn't take too much time
-					if (timer.getElapsedTimeF32() > TEXTURE_PRUNING_MAX_TIME)
+				}
+				// If we removed any entries, we need to rebuild the entries list,
+				// write the header, and call this again
+				std::vector<Entry> new_entries;
+				for (U32 i=0; i<num_entries; i++)
+				{
+					const Entry& entry = entries[i];
+					if (entry.mImageSize > 0)
 					{
-						break;
+						new_entries.push_back(entry);
 					}
 				}
-				writeEntriesAndClose(entries);
+                mFreeList.clear(); // recreating list, no longer valid.
+				llassert_always(new_entries.size() <= sCacheMaxEntries);
+				mHeaderEntriesInfo.mEntries = new_entries.size();
+				writeEntriesHeader();
+				writeEntriesAndClose(new_entries);
+				mHeaderMutex.unlock(); // unlock the mutex before calling again
+				readHeaderCache(); // repeat with new entries file
+				mHeaderMutex.lock();
 			}
 			else
 			{
@@ -1713,7 +1724,7 @@ void LLTextureCache::purgeTexturesLazy(F32 time_limit_sec)
 		}
 
 		S64 cache_size = mTexturesSizeTotal;
-		S64 purged_cache_size = (llmax(cache_size, sCacheMaxTexturesSize) * (S64)((1.f - TEXTURE_CACHE_PURGE_AMOUNT) * 100)) / 100;
+		S64 purged_cache_size = (sCacheMaxTexturesSize * (S64)((1.f - TEXTURE_CACHE_PURGE_AMOUNT) * 100)) / 100;
 		for (time_idx_set_t::iterator iter = time_idx_set.begin();
 			iter != time_idx_set.end(); ++iter)
 		{
@@ -1809,26 +1820,21 @@ void LLTextureCache::purgeTextures(bool validate)
 	}
 
 	S64 cache_size = mTexturesSizeTotal;
-	S64 purged_cache_size = (llmax(cache_size, sCacheMaxTexturesSize) * (S64)((1.f - TEXTURE_CACHE_PURGE_AMOUNT) * 100)) / 100;
+	S64 purged_cache_size = (sCacheMaxTexturesSize * (S64)((1.f-TEXTURE_CACHE_PURGE_AMOUNT)*100)) / 100;
 	S32 purge_count = 0;
 	for (time_idx_set_t::iterator iter = time_idx_set.begin();
 		 iter != time_idx_set.end(); ++iter)
 	{
 		S32 idx = iter->second;
 		bool purge_entry = false;		
-
-		if (cache_size >= purged_cache_size)
-		{
-			purge_entry = true;
-		}
-		else if (validate)
+        if (validate)
 		{
 			// make sure file exists and is the correct size
 			U32 uuididx = entries[idx].mID.mData[0];
 			if (uuididx == validate_idx)
 			{
-				std::string filename = getTextureFileName(entries[idx].mID);
-				LL_DEBUGS("TextureCache") << "Validating: " << filename << "Size: " << entries[idx].mBodySize << LL_ENDL;
+                std::string filename = getTextureFileName(entries[idx].mID);
+ 				LL_DEBUGS("TextureCache") << "Validating: " << filename << "Size: " << entries[idx].mBodySize << LL_ENDL;
 				// mHeaderAPRFilePoolp because this is under header mutex in main thread
 				S32 bodysize = LLAPRFile::size(filename, mHeaderAPRFilePoolp);
 				if (bodysize != entries[idx].mBodySize)
@@ -1838,6 +1844,10 @@ void LLTextureCache::purgeTextures(bool validate)
 				}
 			}
 		}
+		else if (cache_size >= purged_cache_size)
+		{
+			purge_entry = true;
+		}
 		else
 		{
 			break;
diff --git a/indra/newview/llviewerassetstorage.cpp b/indra/newview/llviewerassetstorage.cpp
index 5b76d57196..54f80a2995 100644
--- a/indra/newview/llviewerassetstorage.cpp
+++ b/indra/newview/llviewerassetstorage.cpp
@@ -28,7 +28,8 @@
 
 #include "llviewerassetstorage.h"
 
-#include "llfilesystem.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "message.h"
 
 #include "llagent.h"
@@ -103,8 +104,10 @@ public:
 ///----------------------------------------------------------------------------
 
 // Unused?
-LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer, const LLHost &upstream_host)
-    : LLAssetStorage(msg, xfer, upstream_host),
+LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
+                                           LLVFS *vfs, LLVFS *static_vfs, 
+                                           const LLHost &upstream_host)
+    : LLAssetStorage(msg, xfer, vfs, static_vfs, upstream_host),
       mAssetCoroCount(0),
       mCountRequests(0),
       mCountStarted(0),
@@ -114,8 +117,10 @@ LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *
 {
 }
 
-LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer)
-    : LLAssetStorage(msg, xfer),
+
+LLViewerAssetStorage::LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
+                                           LLVFS *vfs, LLVFS *static_vfs)
+    : LLAssetStorage(msg, xfer, vfs, static_vfs),
       mAssetCoroCount(0),
       mCountRequests(0),
       mCountStarted(0),
@@ -152,13 +157,13 @@ void LLViewerAssetStorage::storeAssetData(
     
     if (mUpstreamHost.isOk())
     {
-        if (LLFileSystem::getExists(asset_id, asset_type))
+        if (mVFS->getExists(asset_id, asset_type))
         {
             // Pack data into this packet if we can fit it.
             U8 buffer[MTUBYTES];
             buffer[0] = 0;
 
-            LLFileSystem vfile(asset_id, asset_type, LLFileSystem::READ);
+            LLVFile vfile(mVFS, asset_id, asset_type, LLVFile::READ);
             S32 asset_size = vfile.getSize();
 
             LLAssetRequest *req = new LLAssetRequest(asset_id, asset_type);
@@ -167,20 +172,22 @@ void LLViewerAssetStorage::storeAssetData(
 
             if (asset_size < 1)
             {
-                // This can happen if there's a bug in our code or if the cache has been corrupted.
-                LL_WARNS("AssetStorage") << "LLViewerAssetStorage::storeAssetData()  Data _should_ already be in the cache, but it's not! " << asset_id << LL_ENDL;
+                // This can happen if there's a bug in our code or if the VFS has been corrupted.
+                LL_WARNS("AssetStorage") << "LLViewerAssetStorage::storeAssetData()  Data _should_ already be in the VFS, but it's not! " << asset_id << LL_ENDL;
+                // LLAssetStorage metric: Zero size VFS
+                reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file didn't exist or was zero length (VFS - can't tell which)" );
 
                 delete req;
                 if (callback)
                 {
-                    callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_FAILED, LLExtStat::CACHE_CORRUPT);
+                    callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_FAILED, LLExtStat::VFS_CORRUPT);
                 }
                 return;
             }
             else
             {
                 // LLAssetStorage metric: Successful Request
-                S32 size = LLFileSystem::getFileSize(asset_id, asset_type);
+                S32 size = mVFS->getSize(asset_id, asset_type);
                 const char *message = "Added to upload queue";
                 reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, size, MR_OKAY, __FILE__, __LINE__, message );
 
@@ -194,7 +201,7 @@ void LLViewerAssetStorage::storeAssetData(
                 }
             }
 
-            // Read the data from the cache if it'll fit in this packet.
+            // Read the data from the VFS if it'll fit in this packet.
             if (asset_size + 100 < MTUBYTES)
             {
                 BOOL res = vfile.read(buffer, asset_size);      /* Flawfinder: ignore */
@@ -207,11 +214,14 @@ void LLViewerAssetStorage::storeAssetData(
                 }
                 else
                 {
-                    LL_WARNS("AssetStorage") << "Probable corruption in cache file, aborting store asset data" << LL_ENDL;
+                    LL_WARNS("AssetStorage") << "Probable corruption in VFS file, aborting store asset data" << LL_ENDL;
+
+                    // LLAssetStorage metric: VFS corrupt - bogus size
+                    reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, asset_size, MR_VFS_CORRUPTION, __FILE__, __LINE__, "VFS corruption" );
 
                     if (callback)
                     {
-                        callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_NONEXISTENT_FILE, LLExtStat::CACHE_CORRUPT);
+                        callback(asset_id, user_data, LL_ERR_ASSET_REQUEST_NONEXISTENT_FILE, LLExtStat::VFS_CORRUPT);
                     }
                     return;
                 }
@@ -234,7 +244,8 @@ void LLViewerAssetStorage::storeAssetData(
         else
         {
             LL_WARNS("AssetStorage") << "AssetStorage: attempt to upload non-existent vfile " << asset_id << ":" << LLAssetType::lookup(asset_type) << LL_ENDL;
-            reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file didn't exist or was zero length (cache - can't tell which)" );
+            // LLAssetStorage metric: Zero size VFS
+            reportMetric( asset_id, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_ZERO_SIZE, __FILE__, __LINE__, "The file didn't exist or was zero length (VFS - can't tell which)" );
             if (callback)
             {
                 callback(asset_id, user_data,  LL_ERR_ASSET_REQUEST_NONEXISTENT_FILE, LLExtStat::NONEXISTENT_FILE);
@@ -267,6 +278,7 @@ void LLViewerAssetStorage::storeAssetData(
     if(filename.empty())
     {
         // LLAssetStorage metric: no filename
+        reportMetric( LLUUID::null, asset_type, LLStringUtil::null, LLUUID::null, 0, MR_VFS_CORRUPTION, __FILE__, __LINE__, "Filename missing" );
         LL_ERRS() << "No filename specified" << LL_ENDL;
         return;
     }
@@ -291,7 +303,9 @@ void LLViewerAssetStorage::storeAssetData(
         legacy->mUpCallback = callback;
         legacy->mUserData = user_data;
 
-        LLFileSystem file(asset_id, asset_type, LLFileSystem::WRITE);
+        LLVFile file(mVFS, asset_id, asset_type, LLVFile::WRITE);
+
+        file.setMaxSize(size);
 
         const S32 buf_size = 65536;
         U8 copy_buf[buf_size];
@@ -525,20 +539,21 @@ void LLViewerAssetStorage::assetRequestCoro(
 			// case.
             LLUUID temp_id;
             temp_id.generate();
-            LLFileSystem vf(temp_id, atype, LLFileSystem::WRITE);
+            LLVFile vf(gAssetStorage->mVFS, temp_id, atype, LLVFile::WRITE);
+            vf.setMaxSize(size);
             req->mBytesFetched = size;
             if (!vf.write(raw.data(),size))
             {
                 // TODO asset-http: handle error
                 LL_WARNS("ViewerAsset") << "Failure in vf.write()" << LL_ENDL;
                 result_code = LL_ERR_ASSET_REQUEST_FAILED;
-                ext_status = LLExtStat::CACHE_CORRUPT;
+                ext_status = LLExtStat::VFS_CORRUPT;
             }
             else if (!vf.rename(uuid, atype))
             {
                 LL_WARNS("ViewerAsset") << "rename failed" << LL_ENDL;
                 result_code = LL_ERR_ASSET_REQUEST_FAILED;
-                ext_status = LLExtStat::CACHE_CORRUPT;
+                ext_status = LLExtStat::VFS_CORRUPT;
             }
             else
             {
diff --git a/indra/newview/llviewerassetstorage.h b/indra/newview/llviewerassetstorage.h
index 972c89de34..ef01d179b7 100644
--- a/indra/newview/llviewerassetstorage.h
+++ b/indra/newview/llviewerassetstorage.h
@@ -30,16 +30,18 @@
 #include "llassetstorage.h"
 #include "llcorehttputil.h"
 
-class LLFileSystem;
+class LLVFile;
 
 class LLViewerAssetRequest;
 
 class LLViewerAssetStorage : public LLAssetStorage
 {
 public:
-	LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer, const LLHost &upstream_host);
+	LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
+				   LLVFS *vfs, LLVFS *static_vfs, const LLHost &upstream_host);
 
-	LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer);
+	LLViewerAssetStorage(LLMessageSystem *msg, LLXferManager *xfer,
+				   LLVFS *vfs, LLVFS *static_vfs);
 
 	~LLViewerAssetStorage();
 
diff --git a/indra/newview/llviewerassetupload.cpp b/indra/newview/llviewerassetupload.cpp
index 1923e7d6ff..bc07821ccd 100644
--- a/indra/newview/llviewerassetupload.cpp
+++ b/indra/newview/llviewerassetupload.cpp
@@ -45,7 +45,7 @@
 #include "llviewerassetupload.h"
 #include "llappviewer.h"
 #include "llviewerstats.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
 #include "llgesturemgr.h"
 #include "llpreviewnotecard.h"
 #include "llpreviewgesture.h"
@@ -467,13 +467,15 @@ LLSD LLNewFileResourceUploadInfo::exportTempFile()
 
     setAssetType(assetType);
 
-    // copy this file into the cache for upload
+    // copy this file into the vfs for upload
     S32 file_size;
     LLAPRFile infile;
     infile.open(filename, LL_APR_RB, NULL, &file_size);
     if (infile.getFileHandle())
     {
-        LLFileSystem file(getAssetId(), assetType, LLFileSystem::WRITE);
+        LLVFile file(gVFS, getAssetId(), assetType, LLVFile::WRITE);
+
+        file.setMaxSize(file_size);
 
         const S32 buf_size = 65536;
         U8 copy_buf[buf_size];
@@ -505,7 +507,7 @@ LLBufferedAssetUploadInfo::LLBufferedAssetUploadInfo(LLUUID itemId, LLAssetType:
     mContents(buffer),
     mInvnFinishFn(finish),
     mTaskFinishFn(nullptr),
-    mStoredToCache(false)
+    mStoredToVFS(false)
 {
     setItemId(itemId);
     setAssetType(assetType);
@@ -519,7 +521,7 @@ LLBufferedAssetUploadInfo::LLBufferedAssetUploadInfo(LLUUID itemId, LLPointer<LL
     mContents(),
     mInvnFinishFn(finish),
     mTaskFinishFn(nullptr),
-    mStoredToCache(false)
+    mStoredToVFS(false)
 {
     setItemId(itemId);
 
@@ -553,7 +555,7 @@ LLBufferedAssetUploadInfo::LLBufferedAssetUploadInfo(LLUUID taskId, LLUUID itemI
     mContents(buffer),
     mInvnFinishFn(nullptr),
     mTaskFinishFn(finish),
-    mStoredToCache(false)
+    mStoredToVFS(false)
 {
     setItemId(itemId);
     setAssetType(assetType);
@@ -564,12 +566,13 @@ LLSD LLBufferedAssetUploadInfo::prepareUpload()
     if (getAssetId().isNull())
         generateNewAssetId();
 
-    LLFileSystem file(getAssetId(), getAssetType(), LLFileSystem::APPEND);
+    LLVFile file(gVFS, getAssetId(), getAssetType(), LLVFile::APPEND);
 
     S32 size = mContents.length() + 1;
+    file.setMaxSize(size);
     file.write((U8*)mContents.c_str(), size);
 
-    mStoredToCache = true;
+    mStoredToVFS = true;
 
     return LLSD().with("success", LLSD::Boolean(true));
 }
@@ -592,10 +595,10 @@ LLUUID LLBufferedAssetUploadInfo::finishUpload(LLSD &result)
     LLUUID newAssetId = result["new_asset"].asUUID();
     LLUUID itemId = getItemId();
 
-    if (mStoredToCache)
+    if (mStoredToVFS)
     {
         LLAssetType::EType assetType(getAssetType());
-        LLFileSystem::renameFile(getAssetId(), assetType, newAssetId, assetType);
+        gVFS->renameFile(getAssetId(), assetType, newAssetId, assetType);
     }
 
     if (mTaskUpload)
diff --git a/indra/newview/llviewerassetupload.h b/indra/newview/llviewerassetupload.h
index e56ba7d8f7..d9eacf3167 100644
--- a/indra/newview/llviewerassetupload.h
+++ b/indra/newview/llviewerassetupload.h
@@ -197,7 +197,7 @@ private:
     std::string         mContents;
     invnUploadFinish_f  mInvnFinishFn;
     taskUploadFinish_f  mTaskFinishFn;
-    bool                mStoredToCache;
+    bool                mStoredToVFS;
 };
 
 //-------------------------------------------------------------------------
diff --git a/indra/newview/llviewermedia_streamingaudio.cpp b/indra/newview/llviewermedia_streamingaudio.cpp
index d3e24aece5..3ccf3070ab 100644
--- a/indra/newview/llviewermedia_streamingaudio.cpp
+++ b/indra/newview/llviewermedia_streamingaudio.cpp
@@ -33,8 +33,10 @@
 #include "llviewermedia_streamingaudio.h"
 
 #include "llmimetypes.h"
+#include "llvfs.h"
 #include "lldir.h"
 
+
 LLStreamingAudio_MediaPlugins::LLStreamingAudio_MediaPlugins() :
 	mMediaPlugin(NULL),
 	mGain(1.0)
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index e59a263adc..4b231c7067 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -53,6 +53,8 @@
 #include "llviewercontrol.h"	// gSavedSettings
 #include "llviewertexturelist.h"
 #include "lluictrlfactory.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llviewerinventory.h"
 #include "llviewermenu.h"	// gMenuHolder
 #include "llviewerparcelmgr.h"
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 6ef452bd92..458fc3b13d 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -44,7 +44,8 @@
 #include "llteleportflags.h"
 #include "lltoastnotifypanel.h"
 #include "lltransactionflags.h"
-#include "llfilesystem.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llxfermanager.h"
 #include "mean_collision_data.h"
 
@@ -6843,15 +6844,16 @@ void process_covenant_reply(LLMessageSystem* msg, void**)
 	}
 }
 
-void onCovenantLoadComplete(const LLUUID& asset_uuid,
-							LLAssetType::EType type,
-							void* user_data, S32 status, LLExtStat ext_status)
+void onCovenantLoadComplete(LLVFS *vfs,
+					const LLUUID& asset_uuid,
+					LLAssetType::EType type,
+					void* user_data, S32 status, LLExtStat ext_status)
 {
 	LL_DEBUGS("Messaging") << "onCovenantLoadComplete()" << LL_ENDL;
 	std::string covenant_text;
 	if(0 == status)
 	{
-		LLFileSystem file(asset_uuid, type, LLFileSystem::READ);
+		LLVFile file(vfs, asset_uuid, type, LLVFile::READ);
 		
 		S32 file_length = file.getSize();
 		
diff --git a/indra/newview/llviewermessage.h b/indra/newview/llviewermessage.h
index 1e5a69ae13..78829a6a56 100644
--- a/indra/newview/llviewermessage.h
+++ b/indra/newview/llviewermessage.h
@@ -47,6 +47,7 @@ class LLInventoryObject;
 class LLInventoryItem;
 class LLMeanCollisionData;
 class LLMessageSystem;
+class LLVFS;
 class LLViewerObject;
 class LLViewerRegion;
 
@@ -188,7 +189,8 @@ void process_script_dialog(LLMessageSystem* msg, void**);
 void process_load_url(LLMessageSystem* msg, void**);
 void process_script_teleport_request(LLMessageSystem* msg, void**);
 void process_covenant_reply(LLMessageSystem* msg, void**);
-void onCovenantLoadComplete(const LLUUID& asset_uuid,
+void onCovenantLoadComplete(LLVFS *vfs,
+							const LLUUID& asset_uuid,
 							LLAssetType::EType type,
 							void* user_data, S32 status, LLExtStat ext_status);
 
diff --git a/indra/newview/llviewerprecompiledheaders.h b/indra/newview/llviewerprecompiledheaders.h
index e378c2448a..bbbacce8fa 100644
--- a/indra/newview/llviewerprecompiledheaders.h
+++ b/indra/newview/llviewerprecompiledheaders.h
@@ -101,6 +101,7 @@
 #include "v4math.h"
 #include "xform.h"
 
+// Library includes from llvfs
 #include "lldir.h"
 
 // Library includes from llmessage project
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 35fb4de5a9..05f88b0a75 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -33,6 +33,7 @@
 #include "llfloaterreg.h"
 #include "llmemory.h"
 #include "lltimer.h"
+#include "llvfile.h"
 
 #include "llappviewer.h"
 
@@ -144,6 +145,7 @@ LLTrace::SampleStatHandle<>	FPS_SAMPLE("fpssample"),
 							VISIBLE_AVATARS("visibleavatars", "Visible Avatars"),
 							SHADER_OBJECTS("shaderobjects", "Object Shaders"),
 							DRAW_DISTANCE("drawdistance", "Draw Distance"),
+							PENDING_VFS_OPERATIONS("vfspendingoperations"),
 							WINDOW_WIDTH("windowwidth", "Window width"),
 							WINDOW_HEIGHT("windowheight", "Window height");
 
@@ -381,6 +383,7 @@ void update_statistics()
 	F64Bits layer_bits = gVLManager.getLandBits() + gVLManager.getWindBits() + gVLManager.getCloudBits();
 	add(LLStatViewer::LAYERS_NETWORK_DATA_RECEIVED, layer_bits);
 	add(LLStatViewer::OBJECT_NETWORK_DATA_RECEIVED, gObjectData);
+	sample(LLStatViewer::PENDING_VFS_OPERATIONS, LLVFile::getVFSThread()->getPending());
 	add(LLStatViewer::ASSET_UDP_DATA_RECEIVED, F64Bits(gTransferManager.getTransferBitsIn(LLTCT_ASSET)));
 	gTransferManager.resetTransferBitsIn(LLTCT_ASSET);
 
diff --git a/indra/newview/llviewerstats.h b/indra/newview/llviewerstats.h
index 72ce336664..04870e0c26 100644
--- a/indra/newview/llviewerstats.h
+++ b/indra/newview/llviewerstats.h
@@ -186,6 +186,7 @@ extern LLTrace::SampleStatHandle<>		FPS_SAMPLE,
 										VISIBLE_AVATARS,
 										SHADER_OBJECTS,
 										DRAW_DISTANCE,
+										PENDING_VFS_OPERATIONS,
 										WINDOW_WIDTH,
 										WINDOW_HEIGHT;
 
diff --git a/indra/newview/llviewertexlayer.cpp b/indra/newview/llviewertexlayer.cpp
index 4c2fbcf837..c501dd0035 100644
--- a/indra/newview/llviewertexlayer.cpp
+++ b/indra/newview/llviewertexlayer.cpp
@@ -31,6 +31,8 @@
 #include "llagent.h"
 #include "llimagej2c.h"
 #include "llnotificationsutil.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "llviewerregion.h"
 #include "llglslshader.h"
 #include "llvoavatarself.h"
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index d69ab1b110..20a22ba45e 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -39,6 +39,8 @@
 #include "llimagej2c.h"
 #include "llimagetga.h"
 #include "llstl.h"
+#include "llvfile.h"
+#include "llvfs.h"
 #include "message.h"
 #include "lltimer.h"
 
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index 07997e02a5..69568cc825 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -54,7 +54,7 @@ class LLTexturePipelineTester ;
 
 typedef	void	(*loaded_callback_func)( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* userdata );
 
-class LLFileSystem;
+class LLVFile;
 class LLMessageSystem;
 class LLViewerMediaImpl ;
 class LLVOVolume ;
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index 38fccba169..561319ca5d 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -41,7 +41,9 @@
 
 #include "llsdserialize.h"
 #include "llsys.h"
-#include "llfilesystem.h"
+#include "llvfs.h"
+#include "llvfile.h"
+#include "llvfsthread.h"
 #include "llxmltree.h"
 #include "message.h"
 
diff --git a/indra/newview/llviewerwearable.cpp b/indra/newview/llviewerwearable.cpp
index 9a4607bb60..9c4dfd1ca2 100644
--- a/indra/newview/llviewerwearable.cpp
+++ b/indra/newview/llviewerwearable.cpp
@@ -107,6 +107,7 @@ LLWearable::EImportResult LLViewerWearable::importStream( std::istream& input_st
 		// Shouldn't really log the asset id for security reasons, but
 		// we need it in this case.
 		LL_WARNS() << "Bad Wearable asset header: " << mAssetID << LL_ENDL;
+		//gVFS->dumpMap();
 		return result;
 	}
 
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 414a1da4fe..f69b9b3861 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -1140,6 +1140,7 @@ void LLVOAvatar::initInstance()
 	//-------------------------------------------------------------------------
 	if (LLCharacter::sInstances.size() == 1)
 	{
+		LLKeyframeMotion::setVFS(gStaticVFS);
 		registerMotion( ANIM_AGENT_DO_NOT_DISTURB,					LLNullMotion::create );
 		registerMotion( ANIM_AGENT_CROUCH,					LLKeyframeStandMotion::create );
 		registerMotion( ANIM_AGENT_CROUCHWALK,				LLKeyframeWalkMotion::create );
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index 73eeec813c..ce400a3498 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -218,9 +218,10 @@ public:
 				void	updateSculptTexture();
 				void    setIndexInTex(U32 ch, S32 index) { mIndexInTex[ch] = index ;}
 				void	sculpt();
-	 static     void    rebuildMeshAssetCallback(const LLUUID& asset_uuid,
-												 LLAssetType::EType type,
-												 void* user_data, S32 status, LLExtStat ext_status);
+	 static     void    rebuildMeshAssetCallback(LLVFS *vfs,
+														  const LLUUID& asset_uuid,
+														  LLAssetType::EType type,
+														  void* user_data, S32 status, LLExtStat ext_status);
 					
 				void	updateRelativeXform(bool force_identity = false);
 	/*virtual*/ BOOL	updateGeometry(LLDrawable *drawable);
diff --git a/indra/newview/skins/default/xui/da/floater_stats.xml b/indra/newview/skins/default/xui/da/floater_stats.xml
index d07f9e48ca..fe3fa9626e 100644
--- a/indra/newview/skins/default/xui/da/floater_stats.xml
+++ b/indra/newview/skins/default/xui/da/floater_stats.xml
@@ -32,6 +32,7 @@
 					<stat_bar label="Layers" name="layerskbitstat"/>
 					<stat_bar label="Actual In" name="actualinkbitstat"/>
 					<stat_bar label="Actual Out" name="actualoutkbitstat"/>
+					<stat_bar label="VFS Pending Ops" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulator" name="sim">
diff --git a/indra/newview/skins/default/xui/da/strings.xml b/indra/newview/skins/default/xui/da/strings.xml
index 814305c1bc..ec6ba4800d 100644
--- a/indra/newview/skins/default/xui/da/strings.xml
+++ b/indra/newview/skins/default/xui/da/strings.xml
@@ -22,6 +22,9 @@
 	<string name="StartupInitializingTextureCache">
 		Initialiserer tekstur cache...
 	</string>
+	<string name="StartupInitializingVFS">
+		Initialiserer VFS...
+	</string>
 	<string name="ProgressRestoring">
 		Gendanner...
 	</string>
diff --git a/indra/newview/skins/default/xui/de/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/de/floater_scene_load_stats.xml
index a3749f1cfa..dff462a594 100644
--- a/indra/newview/skins/default/xui/de/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/de/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Ebenen" name="layersdatareceived"/>
 					<stat_bar label="Tatsächlicher Eingang" name="messagedatain"/>
 					<stat_bar label="Tatsächlicher Ausgang" name="messagedataout"/>
+					<stat_bar label="Ausstehende Vorgänge im VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulator" name="sim">
diff --git a/indra/newview/skins/default/xui/de/floater_stats.xml b/indra/newview/skins/default/xui/de/floater_stats.xml
index 1838c2081a..4e6f56cd94 100644
--- a/indra/newview/skins/default/xui/de/floater_stats.xml
+++ b/indra/newview/skins/default/xui/de/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Ebenen" name="layersdatareceived"/>
 					<stat_bar label="Tatsächlicher Eingang" name="messagedatain"/>
 					<stat_bar label="Tatsächlicher Ausgang" name="messagedataout"/>
+					<stat_bar label="Ausstehende Vorgänge im VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulator" name="sim">
diff --git a/indra/newview/skins/default/xui/de/strings.xml b/indra/newview/skins/default/xui/de/strings.xml
index f021e03dc7..43327c132d 100644
--- a/indra/newview/skins/default/xui/de/strings.xml
+++ b/indra/newview/skins/default/xui/de/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		Textur-Cache wird initialisiert...
 	</string>
+	<string name="StartupInitializingVFS">
+		VFS wird initialisiert...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Grafikinitialisierung fehlgeschlagen. Bitte aktualisieren Sie Ihren Grafiktreiber.
 	</string>
@@ -70,6 +73,7 @@ LOD-Faktor: [LOD_FACTOR]
 Darstellungsqualität: [RENDER_QUALITY]
 Erweitertes Beleuchtungsmodell: [GPU_SHADERS]
 Texturspeicher: [TEXTURE_MEMORY] MB
+Erstellungszeit VFS (Cache): [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		HiDPI-Anzeigemodus: [HIDPI]
diff --git a/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml
index 35d4385487..62cce3a1e3 100644
--- a/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/en/floater_scene_load_stats.xml
@@ -207,6 +207,12 @@
                     tick_spacing="128.f"
                     precision="1"
                     show_bar="false"/>
+			    <stat_bar name="vfspendingoperations"
+                    label="VFS Pending Operations"
+                    orientation="horizontal"
+                    stat="vfspendingoperations"
+                    unit_label=" Ops."
+                    show_bar="false"/>
 			  </stat_view>
 		  </stat_view>
 <!--Sim Stats-->
diff --git a/indra/newview/skins/default/xui/en/floater_stats.xml b/indra/newview/skins/default/xui/en/floater_stats.xml
index f9d44b2c69..e4f735740b 100644
--- a/indra/newview/skins/default/xui/en/floater_stats.xml
+++ b/indra/newview/skins/default/xui/en/floater_stats.xml
@@ -198,6 +198,10 @@
                     stat="messagedataout"
                     decimal_digits="1"
                     show_history="false"/>
+          <stat_bar name="vfspendingoperations"
+                    label="VFS Pending Operations"
+                    stat="vfspendingoperations"
+                    unit_label="Ops."/>
         </stat_view>
       </stat_view>
 
diff --git a/indra/newview/skins/default/xui/en/strings.xml b/indra/newview/skins/default/xui/en/strings.xml
index 619c869a3d..f9f12e7f5c 100644
--- a/indra/newview/skins/default/xui/en/strings.xml
+++ b/indra/newview/skins/default/xui/en/strings.xml
@@ -17,6 +17,7 @@
 	<string name="StartupLoading">Loading [APP_NAME]...</string>
 	<string name="StartupClearingCache">Clearing cache...</string>
 	<string name="StartupInitializingTextureCache">Initializing texture cache...</string>
+	<string name="StartupInitializingVFS">Initializing VFS...</string>
 	<string name="StartupRequireDriverUpdate">Graphics initialization failed. Please update your graphics driver!</string>
 
 	<!-- about dialog/support string-->
@@ -55,9 +56,9 @@ LOD factor: [LOD_FACTOR]
 Render quality: [RENDER_QUALITY]
 Advanced Lighting Model: [GPU_SHADERS]
 Texture memory: [TEXTURE_MEMORY]MB
-Disk cache: [DISK_CACHE_INFO]
+VFS (cache) creation time: [VFS_TIME]
 	</string>
-  <string name="AboutOSXHiDPI">
+	<string name="AboutOSXHiDPI">
 HiDPI display mode: [HIDPI]
 	</string>
 	<string name="AboutLibs">
diff --git a/indra/newview/skins/default/xui/es/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/es/floater_scene_load_stats.xml
index cfc5e524b5..f625d5257c 100644
--- a/indra/newview/skins/default/xui/es/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/es/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Capas" name="layersdatareceived"/>
 					<stat_bar label="Entrando ahora" name="messagedatain"/>
 					<stat_bar label="Saliendo ahora" name="messagedataout"/>
+					<stat_bar label="Operaciones VFS pendientes" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulador" name="sim">
diff --git a/indra/newview/skins/default/xui/es/floater_stats.xml b/indra/newview/skins/default/xui/es/floater_stats.xml
index 0aec786f25..d1c5e867db 100644
--- a/indra/newview/skins/default/xui/es/floater_stats.xml
+++ b/indra/newview/skins/default/xui/es/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Capas" name="layersdatareceived"/>
 					<stat_bar label="Entrando ahora" name="messagedatain"/>
 					<stat_bar label="Saliendo ahora" name="messagedataout"/>
+					<stat_bar label="Operaciones VFS pendientes" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulador" name="sim">
diff --git a/indra/newview/skins/default/xui/es/strings.xml b/indra/newview/skins/default/xui/es/strings.xml
index ebb4ceaa7e..f5e7d0bf4e 100644
--- a/indra/newview/skins/default/xui/es/strings.xml
+++ b/indra/newview/skins/default/xui/es/strings.xml
@@ -22,6 +22,9 @@
 	<string name="StartupInitializingTextureCache">
 		Iniciando la caché de las texturas...
 	</string>
+	<string name="StartupInitializingVFS">
+		Iniciando VFS...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Error de inicialización de gráficos. Actualiza tu controlador de gráficos.
 	</string>
@@ -62,6 +65,7 @@ Factor LOD: [LOD_FACTOR]
 Calidad de renderización: [RENDER_QUALITY]
 Modelo de iluminación avanzado: [GPU_SHADERS]
 Memoria de textura: [TEXTURE_MEMORY]MB
+VFS (cache) hora de creación: [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		Modo de visualización HiDPi: [HIDPI]
diff --git a/indra/newview/skins/default/xui/fr/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/fr/floater_scene_load_stats.xml
index 3889b13f0c..62830054bf 100644
--- a/indra/newview/skins/default/xui/fr/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/fr/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Couches" name="layersdatareceived"/>
 					<stat_bar label="Arrivés" name="messagedatain"/>
 					<stat_bar label="Sortis" name="messagedataout"/>
+					<stat_bar label="Opérations VFS en attente" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulateur" name="sim">
diff --git a/indra/newview/skins/default/xui/fr/floater_stats.xml b/indra/newview/skins/default/xui/fr/floater_stats.xml
index d0f7f42939..fae17e3608 100644
--- a/indra/newview/skins/default/xui/fr/floater_stats.xml
+++ b/indra/newview/skins/default/xui/fr/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Couches" name="layersdatareceived"/>
 					<stat_bar label="Arrivés" name="messagedatain"/>
 					<stat_bar label="Sortis" name="messagedataout"/>
+					<stat_bar label="Opérations VFS en attente" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulateur" name="sim">
diff --git a/indra/newview/skins/default/xui/fr/strings.xml b/indra/newview/skins/default/xui/fr/strings.xml
index 9fde703d6c..f26eac545a 100644
--- a/indra/newview/skins/default/xui/fr/strings.xml
+++ b/indra/newview/skins/default/xui/fr/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		Initialisation du cache des textures...
 	</string>
+	<string name="StartupInitializingVFS">
+		Initialisation VFS...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Échec d&apos;initialisation des graphiques. Veuillez mettre votre pilote graphique à jour.
 	</string>
@@ -71,6 +74,7 @@ Facteur LOD (niveau de détail) : [LOD_FACTOR]
 Qualité de rendu : [RENDER_QUALITY]
 Modèle d’éclairage avancé : [GPU_SHADERS]
 Mémoire textures : [TEXTURE_MEMORY] Mo
+Heure de création VFS (cache) : [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		Mode d&apos;affichage HiDPI : [HIDPI]
diff --git a/indra/newview/skins/default/xui/it/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/it/floater_scene_load_stats.xml
index efceb05298..ca18812eb7 100644
--- a/indra/newview/skins/default/xui/it/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/it/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Livelli" name="layersdatareceived"/>
 					<stat_bar label="Effettivi in ingresso" name="messagedatain"/>
 					<stat_bar label="Effettivi in uscita" name="messagedataout"/>
+					<stat_bar label="Operazioni VFS in sospeso" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulatore" name="sim">
diff --git a/indra/newview/skins/default/xui/it/floater_stats.xml b/indra/newview/skins/default/xui/it/floater_stats.xml
index 6434c3b66b..7ef13aa37f 100644
--- a/indra/newview/skins/default/xui/it/floater_stats.xml
+++ b/indra/newview/skins/default/xui/it/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Livelli" name="layersdatareceived"/>
 					<stat_bar label="Effettivi in ingresso" name="messagedatain"/>
 					<stat_bar label="Effettivi in uscita" name="messagedataout"/>
+					<stat_bar label="Operazioni VFS in sospeso" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulatore" name="sim">
diff --git a/indra/newview/skins/default/xui/it/strings.xml b/indra/newview/skins/default/xui/it/strings.xml
index 3049828f46..f0466cea81 100644
--- a/indra/newview/skins/default/xui/it/strings.xml
+++ b/indra/newview/skins/default/xui/it/strings.xml
@@ -28,6 +28,9 @@
 	<string name="StartupInitializingTextureCache">
 		Inizializzazione della cache texture...
 	</string>
+	<string name="StartupInitializingVFS">
+		Inizializzazione VFS...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Inizializzazione grafica non riuscita. Aggiorna il driver della scheda grafica!
 	</string>
@@ -68,6 +71,7 @@ Fattore livello di dettaglio: [LOD_FACTOR]
 Qualità di rendering: [RENDER_QUALITY]
 Modello illuminazione avanzato: [GPU_SHADERS]
 Memoria texture: [TEXTURE_MEMORY]MB
+Data/ora creazione VFS (cache): [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		Modalità display HiDPI: [HIDPI]
diff --git a/indra/newview/skins/default/xui/ja/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/ja/floater_scene_load_stats.xml
index f348ce3c4d..f6edce026f 100644
--- a/indra/newview/skins/default/xui/ja/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/ja/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="レイヤー" name="layersdatareceived"/>
 					<stat_bar label="実際の受信" name="messagedatain"/>
 					<stat_bar label="実際の送信" name="messagedataout"/>
+					<stat_bar label="VFS 保留中の操作" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="シミュレーター" name="sim">
diff --git a/indra/newview/skins/default/xui/ja/floater_stats.xml b/indra/newview/skins/default/xui/ja/floater_stats.xml
index 1da0e5ebc9..3bc343639b 100644
--- a/indra/newview/skins/default/xui/ja/floater_stats.xml
+++ b/indra/newview/skins/default/xui/ja/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="レイヤー" name="layersdatareceived"/>
 					<stat_bar label="実際の受信" name="messagedatain"/>
 					<stat_bar label="実際の送信" name="messagedataout"/>
+					<stat_bar label="VFS 保留中の操作" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="シミュレーター" name="sim">
diff --git a/indra/newview/skins/default/xui/ja/strings.xml b/indra/newview/skins/default/xui/ja/strings.xml
index dcd6e65d34..52d6fb0c2b 100644
--- a/indra/newview/skins/default/xui/ja/strings.xml
+++ b/indra/newview/skins/default/xui/ja/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		テクスチャキャッシュを初期化中です...
 	</string>
+	<string name="StartupInitializingVFS">
+		VFS を初期化中です...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		グラフィックを初期化できませんでした。グラフィックドライバを更新してください。
 	</string>
@@ -71,6 +74,7 @@ LOD 係数: [LOD_FACTOR]
 描画の質: [RENDER_QUALITY]
 高度なライティングモデル: [GPU_SHADERS]
 テクスチャメモリ: [TEXTURE_MEMORY]MB
+VFS（キャッシュ）作成時間: [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		HiDPI 表示モード: [HIDPI]
diff --git a/indra/newview/skins/default/xui/pl/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/pl/floater_scene_load_stats.xml
index 8f5d0c5c70..6fdc7e19f6 100644
--- a/indra/newview/skins/default/xui/pl/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/pl/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar name="layersdatareceived" label="Warstwy" />
 					<stat_bar name="messagedatain" label="Aktualna il. wchodząca" />
 					<stat_bar name="messagedataout" label="Aktualna il. wychodząca" />
+					<stat_bar name="vfspendingoperations" label="Operacje oczekujące VFS" unit_label=" op." />
 				</stat_view>
 			</stat_view>
 			<stat_view name="sim" label="Symulator">
diff --git a/indra/newview/skins/default/xui/pl/floater_stats.xml b/indra/newview/skins/default/xui/pl/floater_stats.xml
index 21e37717c2..5dd7d19bab 100644
--- a/indra/newview/skins/default/xui/pl/floater_stats.xml
+++ b/indra/newview/skins/default/xui/pl/floater_stats.xml
@@ -55,6 +55,7 @@
 					<stat_bar label="Warstwy" name="layersdatareceived" />
 					<stat_bar label="Aktualna il. wchodząca" name="messagedatain" />
 					<stat_bar label="Aktualna il. wychodząca" name="messagedataout" />
+					<stat_bar label="Operacje oczekujące VFS" name="vfspendingoperations" />
 				</stat_view>
 			</stat_view>
 			<stat_view label="Symulator" name="sim">
diff --git a/indra/newview/skins/default/xui/pl/strings.xml b/indra/newview/skins/default/xui/pl/strings.xml
index cf033df3c9..91fea234d2 100644
--- a/indra/newview/skins/default/xui/pl/strings.xml
+++ b/indra/newview/skins/default/xui/pl/strings.xml
@@ -15,6 +15,9 @@
 	<string name="StartupInitializingTextureCache">
 		Inicjowanie bufora danych tekstur...
 	</string>
+	<string name="StartupInitializingVFS">
+		Inicjowanie wirtualnego systemu plików...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Nie można zainicjować grafiki. Zaktualizuj sterowniki!
 	</string>
diff --git a/indra/newview/skins/default/xui/pt/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/pt/floater_scene_load_stats.xml
index dbaab1d782..027e1ef311 100644
--- a/indra/newview/skins/default/xui/pt/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/pt/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Layers" name="layersdatareceived"/>
 					<stat_bar label="Actual In" name="messagedatain"/>
 					<stat_bar label="Actual Out" name="messagedataout"/>
+					<stat_bar label="Operações pendentes do VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulator" name="sim">
diff --git a/indra/newview/skins/default/xui/pt/floater_stats.xml b/indra/newview/skins/default/xui/pt/floater_stats.xml
index 3253984268..f41fe17778 100644
--- a/indra/newview/skins/default/xui/pt/floater_stats.xml
+++ b/indra/newview/skins/default/xui/pt/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Layers" name="layersdatareceived"/>
 					<stat_bar label="Actual In" name="messagedatain"/>
 					<stat_bar label="Actual Out" name="messagedataout"/>
+					<stat_bar label="Operações pendentes do VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simulator" name="sim">
diff --git a/indra/newview/skins/default/xui/pt/strings.xml b/indra/newview/skins/default/xui/pt/strings.xml
index c72a41fd3a..ee982b5b22 100644
--- a/indra/newview/skins/default/xui/pt/strings.xml
+++ b/indra/newview/skins/default/xui/pt/strings.xml
@@ -22,6 +22,9 @@
 	<string name="StartupInitializingTextureCache">
 		Iniciando cache de texturas...
 	</string>
+	<string name="StartupInitializingVFS">
+		Iniciando VFS...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Falha na inicialização dos gráficos. Atualize seu driver gráfico!
 	</string>
@@ -62,6 +65,7 @@ LOD fator: [LOD_FACTOR]
 Qualidade de renderização: [RENDER_QUALITY]
 Modelo avançado de luzes: [GPU_SHADERS]
 Memória de textura: [TEXTURE_MEMORY]MB
+VFS (cache) tempo de criação: [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		HiDPI modo de exibição: [HIDPI]
diff --git a/indra/newview/skins/default/xui/ru/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/ru/floater_scene_load_stats.xml
index c4f432023c..a101e62627 100644
--- a/indra/newview/skins/default/xui/ru/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/ru/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Слои" name="layersdatareceived"/>
 					<stat_bar label="Действительный ввод" name="messagedatain"/>
 					<stat_bar label="Действительный вывод" name="messagedataout"/>
+					<stat_bar label="Ожидающие операции VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Симулятор" name="sim">
diff --git a/indra/newview/skins/default/xui/ru/floater_stats.xml b/indra/newview/skins/default/xui/ru/floater_stats.xml
index a7d26029c2..10e9f5a7f4 100644
--- a/indra/newview/skins/default/xui/ru/floater_stats.xml
+++ b/indra/newview/skins/default/xui/ru/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Слои" name="layersdatareceived"/>
 					<stat_bar label="Действительный ввод" name="messagedatain"/>
 					<stat_bar label="Действительный вывод" name="messagedataout"/>
+					<stat_bar label="Ожидающие операции VFS" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Симулятор" name="sim">
diff --git a/indra/newview/skins/default/xui/ru/strings.xml b/indra/newview/skins/default/xui/ru/strings.xml
index 43a87b2b18..e9592a0476 100644
--- a/indra/newview/skins/default/xui/ru/strings.xml
+++ b/indra/newview/skins/default/xui/ru/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		Инициализация кэша текстур...
 	</string>
+	<string name="StartupInitializingVFS">
+		Инициализация виртуальной файловой системы...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Ошибка инициализации графики. Обновите графический драйвер!
 	</string>
@@ -71,6 +74,7 @@ SLURL: &lt;nolink&gt;[SLURL]&lt;/nolink&gt;
 Качество визуализации: [RENDER_QUALITY]
 Расширенная модель освещения: [GPU_SHADERS]
 Память текстур: [TEXTURE_MEMORY] МБ
+Время создания VFS (кэш): [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		Режим отображения HiDPI: [HIDPI]
diff --git a/indra/newview/skins/default/xui/tr/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/tr/floater_scene_load_stats.xml
index 7d5f4adb02..ae0a94595d 100644
--- a/indra/newview/skins/default/xui/tr/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/tr/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="Katmanlar" name="layersdatareceived"/>
 					<stat_bar label="Gerçekte Gelen" name="messagedatain"/>
 					<stat_bar label="Gerçekte Giden" name="messagedataout"/>
+					<stat_bar label="VFS Bekleyen İşlemler" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simülatör" name="sim">
diff --git a/indra/newview/skins/default/xui/tr/floater_stats.xml b/indra/newview/skins/default/xui/tr/floater_stats.xml
index bd36d4916f..1ae42ad382 100644
--- a/indra/newview/skins/default/xui/tr/floater_stats.xml
+++ b/indra/newview/skins/default/xui/tr/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="Katmanlar" name="layersdatareceived"/>
 					<stat_bar label="Gerçekte Gelen" name="messagedatain"/>
 					<stat_bar label="Gerçekte Giden" name="messagedataout"/>
+					<stat_bar label="VFS Bekleyen İşlemler" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="Simülatör" name="sim">
diff --git a/indra/newview/skins/default/xui/tr/strings.xml b/indra/newview/skins/default/xui/tr/strings.xml
index 982de76a5b..56fad978f5 100644
--- a/indra/newview/skins/default/xui/tr/strings.xml
+++ b/indra/newview/skins/default/xui/tr/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		Doku önbelleği başlatılıyor...
 	</string>
+	<string name="StartupInitializingVFS">
+		VFS Başlatılıyor...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		Grafik başlatma başarılamadı. Lütfen grafik sürücünüzü güncelleştirin!
 	</string>
@@ -71,6 +74,7 @@ LOD faktörü: [LOD_FACTOR]
 İşleme kalitesi: [RENDER_QUALITY]
 Gelişmiş Aydınlatma Modeli: [GPU_SHADERS]
 Doku belleği: [TEXTURE_MEMORY]MB
+VFS (önbellek) oluşturma saati: [VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		HiDPI görüntü modu: [HIDPI]
diff --git a/indra/newview/skins/default/xui/zh/floater_scene_load_stats.xml b/indra/newview/skins/default/xui/zh/floater_scene_load_stats.xml
index 20344e299f..1a5c20abeb 100644
--- a/indra/newview/skins/default/xui/zh/floater_scene_load_stats.xml
+++ b/indra/newview/skins/default/xui/zh/floater_scene_load_stats.xml
@@ -29,6 +29,7 @@
 					<stat_bar label="層次" name="layersdatareceived"/>
 					<stat_bar label="實入" name="messagedatain"/>
 					<stat_bar label="實出" name="messagedataout"/>
+					<stat_bar label="VFS 待行作業" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="模擬器" name="sim">
diff --git a/indra/newview/skins/default/xui/zh/floater_stats.xml b/indra/newview/skins/default/xui/zh/floater_stats.xml
index e233ece527..f06eb5e78f 100644
--- a/indra/newview/skins/default/xui/zh/floater_stats.xml
+++ b/indra/newview/skins/default/xui/zh/floater_stats.xml
@@ -56,6 +56,7 @@
 					<stat_bar label="層次" name="layersdatareceived"/>
 					<stat_bar label="實入" name="messagedatain"/>
 					<stat_bar label="實出" name="messagedataout"/>
+					<stat_bar label="VFS 待行作業" name="vfspendingoperations"/>
 				</stat_view>
 			</stat_view>
 			<stat_view label="模擬器" name="sim">
diff --git a/indra/newview/skins/default/xui/zh/strings.xml b/indra/newview/skins/default/xui/zh/strings.xml
index 3221cde3b7..e6c61a5d94 100644
--- a/indra/newview/skins/default/xui/zh/strings.xml
+++ b/indra/newview/skins/default/xui/zh/strings.xml
@@ -31,6 +31,9 @@
 	<string name="StartupInitializingTextureCache">
 		正在初始化材質快取...
 	</string>
+	<string name="StartupInitializingVFS">
+		VFS 初始化中...
+	</string>
 	<string name="StartupRequireDriverUpdate">
 		顯像初始化失敗。 請更新你的顯像卡驅動程式！
 	</string>
@@ -71,6 +74,7 @@
 呈像品質：[RENDER_QUALITY]
 進階照明模型：[GPU_SHADERS]
 材質記憶體：[TEXTURE_MEMORY]MB
+VFS（快取）建立時間：[VFS_TIME]
 	</string>
 	<string name="AboutOSXHiDPI">
 		HiDPI顯示模式：[HIDPI]
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index 8eee583a48..6d231040f7 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -69,6 +69,7 @@ class ViewerManifest(LLManifest):
                 self.exclude("logcontrol-dev.xml")
                 self.path("*.ini")
                 self.path("*.xml")
+                self.path("*.db2")
 
                 # include the entire shaders directory recursively
                 self.path("shaders")