1 files changed, 59 insertions, 0 deletions
diff --git a/weed/shell/command_volume_unmount.go b/weed/shell/command_volume_unmount.go
new file mode 100644
index 000000000..6e5bef485
--- /dev/null
+++ b/weed/shell/command_volume_unmount.go
@@ -0,0 +1,59 @@
+package shell
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+	"google.golang.org/grpc"
+)
+
+func init() {
+	Commands = append(Commands, &commandVolumeUnmount{})
+}
+
+type commandVolumeUnmount struct {
+}
+
+func (c *commandVolumeUnmount) Name() string {
+	return "volume.unmount"
+}
+
+func (c *commandVolumeUnmount) Help() string {
+	return `unmount a volume from one volume server
+
+	volume.unmount <volume server host:port> <volume id>
+
+	This command unmounts a volume from one volume server.
+
+`
+}
+
+func (c *commandVolumeUnmount) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
+
+	if len(args) != 2 {
+		fmt.Fprintf(writer, "received args: %+v\n", args)
+		return fmt.Errorf("need 2 args of <volume server host:port> <volume id>")
+	}
+	sourceVolumeServer, volumeIdString := args[0], args[1]
+
+	volumeId, err := needle.NewVolumeId(volumeIdString)
+	if err != nil {
+		return fmt.Errorf("wrong volume id format %s: %v", volumeId, err)
+	}
+
+	return unmountVolume(commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer)
+
+}
+
+func unmountVolume(grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer string) (err error) {
+	return operation.WithVolumeServerClient(sourceVolumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
+		_, unmountErr := volumeServerClient.VolumeUnmount(context.Background(), &volume_server_pb.VolumeUnmountRequest{
+			VolumeId: uint32(volumeId),
+		})
+		return unmountErr
+	})
+}