seaweedfs/weed/shell/command_volume_mount.go

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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, &commandVolumeMount{})
}
type commandVolumeMount struct {
}
func (c *commandVolumeMount) Name() string {
return "volume.mount"
}
func (c *commandVolumeMount) Help() string {
return `mount a volume from one volume server
volume.mount <volume server host:port> <volume id>
This command mounts a volume from one volume server.
`
}
func (c *commandVolumeMount) 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)
}
ctx := context.Background()
return mountVolume(ctx, commandEnv.option.GrpcDialOption, volumeId, sourceVolumeServer)
}
func mountVolume(ctx context.Context, grpcDialOption grpc.DialOption, volumeId needle.VolumeId, sourceVolumeServer string) (err error) {
return operation.WithVolumeServerClient(sourceVolumeServer, grpcDialOption, func(ctx context.Context, volumeServerClient volume_server_pb.VolumeServerClient) error {
_, mountErr := volumeServerClient.VolumeMount(ctx, &volume_server_pb.VolumeMountRequest{
VolumeId: uint32(volumeId),
})
return mountErr
})
}