mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-28 11:57:54 +08:00
178 lines
4.6 KiB
Go
178 lines
4.6 KiB
Go
package shell
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/pb"
|
|
|
|
"google.golang.org/grpc"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/operation"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/needle"
|
|
)
|
|
|
|
func init() {
|
|
Commands = append(Commands, &commandVolumeTierDownload{})
|
|
}
|
|
|
|
type commandVolumeTierDownload struct {
|
|
}
|
|
|
|
func (c *commandVolumeTierDownload) Name() string {
|
|
return "volume.tier.download"
|
|
}
|
|
|
|
func (c *commandVolumeTierDownload) Help() string {
|
|
return `download the dat file of a volume from a remote tier
|
|
|
|
volume.tier.download [-collection=""]
|
|
volume.tier.download [-collection=""] -volumeId=<volume_id>
|
|
|
|
e.g.:
|
|
volume.tier.download -volumeId=7
|
|
|
|
This command will download the dat file of a volume from a remote tier to a volume server in local cluster.
|
|
|
|
`
|
|
}
|
|
|
|
func (c *commandVolumeTierDownload) HasTag(CommandTag) bool {
|
|
return false
|
|
}
|
|
|
|
func (c *commandVolumeTierDownload) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
|
|
|
|
tierCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
|
|
volumeId := tierCommand.Int("volumeId", 0, "the volume id")
|
|
collection := tierCommand.String("collection", "", "the collection name")
|
|
if err = tierCommand.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
|
|
if err = commandEnv.confirmIsLocked(args); err != nil {
|
|
return
|
|
}
|
|
|
|
vid := needle.VolumeId(*volumeId)
|
|
|
|
// collect topology information
|
|
topologyInfo, _, err := collectTopologyInfo(commandEnv, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// volumeId is provided
|
|
if vid != 0 {
|
|
return doVolumeTierDownload(commandEnv, writer, *collection, vid)
|
|
}
|
|
|
|
// apply to all volumes in the collection
|
|
// reusing collectVolumeIdsForEcEncode for now
|
|
volumeIds := collectRemoteVolumes(topologyInfo, *collection)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Printf("tier download volumes: %v\n", volumeIds)
|
|
for _, vid := range volumeIds {
|
|
if err = doVolumeTierDownload(commandEnv, writer, *collection, vid); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func collectRemoteVolumes(topoInfo *master_pb.TopologyInfo, selectedCollection string) (vids []needle.VolumeId) {
|
|
|
|
vidMap := make(map[uint32]bool)
|
|
eachDataNode(topoInfo, func(dc string, rack RackId, dn *master_pb.DataNodeInfo) {
|
|
for _, diskInfo := range dn.DiskInfos {
|
|
for _, v := range diskInfo.VolumeInfos {
|
|
if v.Collection == selectedCollection && v.RemoteStorageKey != "" && v.RemoteStorageName != "" {
|
|
vidMap[v.Id] = true
|
|
}
|
|
}
|
|
}
|
|
})
|
|
|
|
for vid := range vidMap {
|
|
vids = append(vids, needle.VolumeId(vid))
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func doVolumeTierDownload(commandEnv *CommandEnv, writer io.Writer, collection string, vid needle.VolumeId) (err error) {
|
|
// find volume location
|
|
locations, found := commandEnv.MasterClient.GetLocationsClone(uint32(vid))
|
|
if !found {
|
|
return fmt.Errorf("volume %d not found", vid)
|
|
}
|
|
|
|
// TODO parallelize this
|
|
for _, loc := range locations {
|
|
// copy the .dat file from remote tier to local
|
|
err = downloadDatFromRemoteTier(commandEnv.option.GrpcDialOption, writer, needle.VolumeId(vid), collection, loc.ServerAddress())
|
|
if err != nil {
|
|
return fmt.Errorf("download dat file for volume %d to %s: %v", vid, loc.Url, err)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func downloadDatFromRemoteTier(grpcDialOption grpc.DialOption, writer io.Writer, volumeId needle.VolumeId, collection string, targetVolumeServer pb.ServerAddress) error {
|
|
|
|
err := operation.WithVolumeServerClient(true, targetVolumeServer, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
|
|
stream, downloadErr := volumeServerClient.VolumeTierMoveDatFromRemote(context.Background(), &volume_server_pb.VolumeTierMoveDatFromRemoteRequest{
|
|
VolumeId: uint32(volumeId),
|
|
Collection: collection,
|
|
})
|
|
|
|
var lastProcessed int64
|
|
for {
|
|
resp, recvErr := stream.Recv()
|
|
if recvErr != nil {
|
|
if recvErr == io.EOF {
|
|
break
|
|
} else {
|
|
return recvErr
|
|
}
|
|
}
|
|
|
|
processingSpeed := float64(resp.Processed-lastProcessed) / 1024.0 / 1024.0
|
|
|
|
fmt.Fprintf(writer, "downloaded %.2f%%, %d bytes, %.2fMB/s\n", resp.ProcessedPercentage, resp.Processed, processingSpeed)
|
|
|
|
lastProcessed = resp.Processed
|
|
}
|
|
if downloadErr != nil {
|
|
return downloadErr
|
|
}
|
|
|
|
_, unmountErr := volumeServerClient.VolumeUnmount(context.Background(), &volume_server_pb.VolumeUnmountRequest{
|
|
VolumeId: uint32(volumeId),
|
|
})
|
|
if unmountErr != nil {
|
|
return unmountErr
|
|
}
|
|
|
|
_, mountErr := volumeServerClient.VolumeMount(context.Background(), &volume_server_pb.VolumeMountRequest{
|
|
VolumeId: uint32(volumeId),
|
|
})
|
|
if mountErr != nil {
|
|
return mountErr
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
return err
|
|
|
|
}
|