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mount: fail early rather than after mounted the directory

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fix https://github.com/chrislusf/seaweedfs/issues/1258
This commit is contained in:
Chris Lu 2020-04-03 00:21:03 -07:00
parent fee3319cbf
commit 5f881d2fd5
1 changed files with 26 additions and 34 deletions
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60
weed/command/mount_std.go
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@ -13,8 +13,6 @@ import (
"strings"
"time"
"github.com/jacobsa/daemonize"
"github.com/chrislusf/seaweedfs/weed/filesys"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb"
@ -41,6 +39,29 @@ func runMount(cmd *Command, args []string) bool {
func RunMount(option *MountOptions, umask os.FileMode) bool {
filer := *option.filer
// parse filer grpc address
filerGrpcAddress, err := pb.ParseFilerGrpcAddress(filer)
if err != nil {
glog.V(0).Infof("ParseFilerGrpcAddress: %v", err)
return true
}
// try to connect to filer, filerBucketsPath may be useful later
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
var cipher bool
err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
if err != nil {
return fmt.Errorf("get filer %s configuration: %v", filerGrpcAddress, err)
}
cipher = resp.Cipher
return nil
})
if err != nil {
glog.Infof("failed to talk to filer %s: %v", filerGrpcAddress, err)
return true
}
filerMountRootPath := *option.filerMountRootPath
dir := *option.dir
chunkSizeLimitMB := *mountOptions.chunkSizeLimitMB
@ -85,7 +106,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
// Ensure target mount point availability
if isValid := checkMountPointAvailable(dir); !isValid {
glog.Fatalf("Expected mount to still be active, target mount point: %s, please check!", dir)
return false
return true
}
mountName := path.Base(dir)
@ -119,47 +140,22 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
c, err := fuse.Mount(dir, options...)
if err != nil {
glog.V(0).Infof("mount: %v", err)
daemonize.SignalOutcome(err)
return true
}
defer fuse.Unmount(dir)
util.OnInterrupt(func() {
fuse.Unmount(dir)
c.Close()
})
// parse filer grpc address
filerGrpcAddress, err := pb.ParseFilerGrpcAddress(filer)
if err != nil {
glog.V(0).Infof("ParseFilerGrpcAddress: %v", err)
daemonize.SignalOutcome(err)
return true
}
// try to connect to filer, filerBucketsPath may be useful later
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
var cipher bool
err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
if err != nil {
return fmt.Errorf("get filer %s configuration: %v", filerGrpcAddress, err)
}
cipher = resp.Cipher
return nil
})
if err != nil {
glog.Fatal(err)
return false
}
// find mount point
mountRoot := filerMountRootPath
if mountRoot != "/" && strings.HasSuffix(mountRoot, "/") {
mountRoot = mountRoot[0 : len(mountRoot)-1]
}
daemonize.SignalOutcome(nil)
err = fs.Serve(c, filesys.NewSeaweedFileSystem(&filesys.Option{
FilerGrpcAddress: filerGrpcAddress,
GrpcDialOption: grpcDialOption,
@ -181,15 +177,11 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
OutsideContainerClusterMode: *mountOptions.outsideContainerClusterMode,
Cipher: cipher,
}))
if err != nil {
fuse.Unmount(dir)
}
// check if the mount process has an error to report
<-c.Ready
if err := c.MountError; err != nil {
glog.V(0).Infof("mount process: %v", err)
daemonize.SignalOutcome(err)
return true
}