support -o writeback_cache (#576)

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/google/gops v0.3.13
 	github.com/google/readahead v0.0.0-20161222183148-eaceba169032 // indirect
 	github.com/google/uuid v1.1.2
-	github.com/hanwen/go-fuse/v2 v2.0.4-0.20210104155004-09a3c381714c
+	github.com/hanwen/go-fuse/v2 v2.1.1-0.20210611132105-24a1dfe6b4f8
 	github.com/huaweicloud/huaweicloud-sdk-go-obs v0.0.0-20190127152727-3a9e1f8023d5
 	github.com/hungys/go-lz4 v0.0.0-20170805124057-19ff7f07f099
 	github.com/jcmturner/gokrb5/v8 v8.4.2
@@ -67,3 +67,4 @@ require (
 )
 
 replace github.com/minio/minio v0.0.0-20210206053228-97fe57bba92c => github.com/juicedata/minio v0.0.0-20210222051636-e7cabdf948f4
+replace github.com/hanwen/go-fuse/v2 v2.1.1-0.20210611132105-24a1dfe6b4f8 => github.com/juicedata/go-fuse/v2 v2.1.1-0.20210629082323-0ec79f5f0a45
\ No newline at end of file

go.sum

@@ -276,6 +276,10 @@ github.com/hanwen/go-fuse v1.0.0 h1:GxS9Zrn6c35/BnfiVsZVWmsG803xwE7eVRDvcf/BEVc=
 github.com/hanwen/go-fuse v1.0.0/go.mod h1:unqXarDXqzAk0rt98O2tVndEPIpUgLD9+rwFisZH3Ok=
 github.com/hanwen/go-fuse/v2 v2.0.4-0.20210104155004-09a3c381714c h1:iyvcTTLELLcFVDxx5b3n0O7XosPY9SQsq7tP4LyLib0=
 github.com/hanwen/go-fuse/v2 v2.0.4-0.20210104155004-09a3c381714c/go.mod h1:0EQM6aH2ctVpvZ6a+onrQ/vaykxh2GH7hy3e13vzTUY=
+github.com/hanwen/go-fuse/v2 v2.1.0 h1:+32ffteETaLYClUj0a3aHjZ1hOPxxaNEHiZiujuDaek=
+github.com/hanwen/go-fuse/v2 v2.1.0/go.mod h1:oRyA5eK+pvJyv5otpO/DgccS8y/RvYMaO00GgRLGryc=
+github.com/hanwen/go-fuse/v2 v2.1.1-0.20210611132105-24a1dfe6b4f8 h1:1v+7WNqPXx5j/hF9uizHl6xEzLZ7djHFwgbQFXPdZoE=
+github.com/hanwen/go-fuse/v2 v2.1.1-0.20210611132105-24a1dfe6b4f8/go.mod h1:oRyA5eK+pvJyv5otpO/DgccS8y/RvYMaO00GgRLGryc=
 github.com/hashicorp/consul/api v1.3.0/go.mod h1:MmDNSzIMUjNpY/mQ398R4bk2FnqQLoPndWW5VkKPlCE=
 github.com/hashicorp/consul/sdk v0.3.0/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=
 github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
@@ -365,6 +369,8 @@ github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
+github.com/juicedata/go-fuse/v2 v2.1.1-0.20210629082323-0ec79f5f0a45 h1:EKaeYSLTAswfnP23iK6PaclCdcBUwL0+BNkjaXzkO/8=
+github.com/juicedata/go-fuse/v2 v2.1.1-0.20210629082323-0ec79f5f0a45/go.mod h1:oRyA5eK+pvJyv5otpO/DgccS8y/RvYMaO00GgRLGryc=
 github.com/juicedata/godaemon v0.0.0-20210118074000-659b6681b236 h1:py4S1ZTRfz5hIvrhu83YSw7t0Z621+VrmmZBqSkQn5c=
 github.com/juicedata/godaemon v0.0.0-20210118074000-659b6681b236/go.mod h1:dlxKkLh3qAIPtgr2U/RVzsZJDuXA1ffg+Njikfmhvgw=
 github.com/juicedata/minio v0.0.0-20210222051636-e7cabdf948f4 h1:/Klbj2LgJnqWrVfK2RtsqNQm649uXi2diLc/2X3eis4=
@@ -793,6 +799,7 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

pkg/fuse/fuse.go

@@ -445,6 +445,8 @@ func Serve(conf *vfs.Config, options string, attrCacheTo, entryCacheTo, dirEntry
 		} else if n == "nonempty" {
 		} else if n == "debug" {
 			opt.Debug = true
+		} else if n == "writeback_cache" || n == "writeback" {
+			opt.EnableWriteback = true
 		} else if strings.TrimSpace(n) != "" {
 			opt.Options = append(opt.Options, n)
 		}