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mount: use sdnotify to signal systemd the mount is ready

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When the NOTIFY_SOCKET environment variable is set notify systemd after
the mount is ready.
This commit is contained in:
Fabian Möller 2017-11-19 23:03:49 +01:00 committed by Nick Craig-Wood
parent 0bfa29cbcf
commit d8b3bf014d
3 changed files with 20 additions and 0 deletions
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6
cmd/cmount/mount.go
View File

@ -21,6 +21,7 @@ import (
"github.com/ncw/rclone/fs"
"github.com/ncw/rclone/vfs"
"github.com/ncw/rclone/vfs/vfsflags"
"github.com/okzk/sdnotify"
"github.com/pkg/errors"
)
@ -180,6 +181,10 @@ func Mount(f fs.Fs, mountpoint string) error {
sigHup := make(chan os.Signal, 1)
signal.Notify(sigHup, syscall.SIGHUP)
if err := sdnotify.SdNotifyReady(); err != nil && err != sdnotify.SdNotifyNoSocket {
return errors.Wrap(err, "failed to notify systemd")
}
waitloop:
for {
select {
@ -197,6 +202,7 @@ waitloop:
}
}
_ = sdnotify.SdNotifyStopping()
if err != nil {
return errors.Wrap(err, "failed to umount FUSE fs")
}

6
cmd/mount/mount.go
View File

@ -15,6 +15,7 @@ import (
"github.com/ncw/rclone/fs"
"github.com/ncw/rclone/vfs"
"github.com/ncw/rclone/vfs/vfsflags"
"github.com/okzk/sdnotify"
"github.com/pkg/errors"
)
@ -126,6 +127,10 @@ func Mount(f fs.Fs, mountpoint string) error {
sigHup := make(chan os.Signal, 1)
signal.Notify(sigHup, syscall.SIGHUP)
if err := sdnotify.SdNotifyReady(); err != nil && err != sdnotify.SdNotifyNoSocket {
return errors.Wrap(err, "failed to notify systemd")
}
waitloop:
for {
select {
@ -147,6 +152,7 @@ waitloop:
}
}
_ = sdnotify.SdNotifyStopping()
if err != nil {
return errors.Wrap(err, "failed to umount FUSE fs")
}

8
cmd/mountlib/mount.go
View File

@ -156,6 +156,14 @@ Assuming only one rclone instance is running, you can reset the cache
like this:
kill -SIGHUP $(pidof rclone)
### systemd ###
When running rclone ` + commandName + ` as a systemd service, it is possible
to use Type=notify. In this case the service will enter the started state
after the mountpoint has been successfully set up.
Units having the rclone ` + commandName + ` service specified as a requirement
will see all files and folders immediately in this mode.
`,
Run: func(command *cobra.Command, args []string) {
cmd.CheckArgs(2, 2, command, args)