func runBackup(cmd *Command, args []string) bool {
if *s.volumeId == -1 {
return false
}
vid := storage.VolumeId(*s.volumeId)
// find volume location, replication, ttl info
lookup, err := operation.Lookup(*s.master, vid.String())
if err != nil {
fmt.Printf("Error looking up volume %d: %v\n", vid, err)
return true
}
volumeServer := lookup.Locations[0].Url
stats, err := operation.GetVolumeSyncStatus(volumeServer, vid.String())
if err != nil {
fmt.Printf("Error get volume %d status: %v\n", vid, err)
return true
}
ttl, err := storage.ReadTTL(stats.Ttl)
if err != nil {
fmt.Printf("Error get volume %d ttl %s: %v\n", vid, stats.Ttl, err)
return true
}
replication, err := storage.NewReplicaPlacementFromString(stats.Replication)
if err != nil {
fmt.Printf("Error get volume %d replication %s : %v\n", vid, stats.Replication, err)
return true
}
v, err := storage.NewVolume(*s.dir, *s.collection, vid, storage.NeedleMapInMemory, replication, ttl)
if err != nil {
fmt.Printf("Error creating or reading from volume %d: %v\n", vid, err)
return true
}
if err := v.Synchronize(volumeServer); err != nil {
fmt.Printf("Error synchronizing volume %d: %v\n", vid, err)
return true
}
return true
}
func fetchVolumeFileEntries(volumeServer string, vid VolumeId) (m CompactMap, lastOffset uint64, compactRevision uint16, err error) {
m = NewCompactMap()
syncStatus, err := operation.GetVolumeSyncStatus(volumeServer, vid.String())
if err != nil {
return m, 0, 0, err
}
total := 0
err = operation.GetVolumeIdxEntries(volumeServer, vid.String(), func(key uint64, offset, size uint32) {
// println("remote key", key, "offset", offset*NeedlePaddingSize, "size", size)
if offset != 0 && size != 0 {
m.Set(Key(key), offset, size)
} else {
m.Delete(Key(key))
}
total++
})
glog.V(2).Infof("server %s volume %d, entries %d, last offset %d, revision %d", volumeServer, vid, total, syncStatus.TailOffset, syncStatus.CompactRevision)
return m, syncStatus.TailOffset, syncStatus.CompactRevision, err
}