weed mount, weed dav add option to force cache

weed/command/mount.go

@@ -20,6 +20,7 @@ type MountOptions struct {
 	cacheDirForRead    *string
 	cacheDirForWrite   *string
 	cacheSizeMBForRead *int64
+	forceCache         *bool
 	dataCenter         *string
 	allowOthers        *bool
 	umaskString        *string
@@ -58,6 +59,7 @@ func init() {
 	mountOptions.cacheDirForRead = cmdMount.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks and meta data")
 	mountOptions.cacheSizeMBForRead = cmdMount.Flag.Int64("cacheCapacityMB", 0, "file chunk read cache capacity in MB")
 	mountOptions.cacheDirForWrite = cmdMount.Flag.String("cacheDirWrite", "", "buffer writes mostly for large files")
+	mountOptions.forceCache = cmdMount.Flag.Bool("forceCache", true, "force to cache all reads")
 	mountOptions.dataCenter = cmdMount.Flag.String("dataCenter", "", "prefer to write to the data center")
 	mountOptions.allowOthers = cmdMount.Flag.Bool("allowOthers", true, "allows other users to access the file system")
 	mountOptions.umaskString = cmdMount.Flag.String("umask", "022", "octal umask, e.g., 022, 0111")

weed/command/mount_std.go

@@ -235,6 +235,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		CacheDirForRead:    *option.cacheDirForRead,
 		CacheSizeMBForRead: *option.cacheSizeMBForRead,
 		CacheDirForWrite:   cacheDirForWrite,
+		ForceCache:         *option.forceCache,
 		DataCenter:         *option.dataCenter,
 		Quota:              int64(*option.collectionQuota) * 1024 * 1024,
 		MountUid:           uid,

weed/command/webdav.go

@@ -32,6 +32,7 @@ type WebDavOption struct {
 	tlsCertificate *string
 	cacheDir       *string
 	cacheSizeMB    *int64
+	forceCache     *bool
 	maxMB          *int
 }
 
@@ -46,6 +47,7 @@ func init() {
 	webDavStandaloneOptions.tlsCertificate = cmdWebDav.Flag.String("cert.file", "", "path to the TLS certificate file")
 	webDavStandaloneOptions.cacheDir = cmdWebDav.Flag.String("cacheDir", os.TempDir(), "local cache directory for file chunks")
 	webDavStandaloneOptions.cacheSizeMB = cmdWebDav.Flag.Int64("cacheCapacityMB", 0, "local cache capacity in MB")
+	webDavStandaloneOptions.forceCache = cmdWebDav.Flag.Bool("forceCache", false, "force to cache reads to local disk")
 	webDavStandaloneOptions.maxMB = cmdWebDav.Flag.Int("maxMB", 4, "split files larger than the limit")
 	webDavStandaloneOptions.filerRootPath = cmdWebDav.Flag.String("filer.path", "/", "use this remote path from filer server")
 }
@@ -118,6 +120,7 @@ func (wo *WebDavOption) startWebDav() bool {
 		Cipher:         cipher,
 		CacheDir:       util.ResolvePath(*wo.cacheDir),
 		CacheSizeMB:    *wo.cacheSizeMB,
+		ForceCache:     *wo.forceCache,
 		MaxMB:          *wo.maxMB,
 	})
 	if webdavServer_err != nil {