seaweedfs/weed/topology/topology_vacuum.go

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package topology
import (
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"context"
"sync/atomic"
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"time"
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"google.golang.org/grpc"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
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)
func batchVacuumVolumeCheck(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId,
locationlist *VolumeLocationList, garbageThreshold float64) (*VolumeLocationList, bool) {
ch := make(chan int, locationlist.Length())
errCount := int32(0)
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for index, dn := range locationlist.list {
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go func(index int, url string, vid needle.VolumeId) {
err := operation.WithVolumeServerClient(url, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
resp, err := volumeServerClient.VacuumVolumeCheck(context.Background(), &volume_server_pb.VacuumVolumeCheckRequest{
VolumeId: uint32(vid),
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})
if err != nil {
atomic.AddInt32(&errCount, 1)
ch <- -1
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return err
}
if resp.GarbageRatio >= garbageThreshold {
ch <- index
} else {
ch <- -1
}
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return nil
})
if err != nil {
glog.V(0).Infof("Checking vacuuming %d on %s: %v", vid, url, err)
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}
}(index, dn.Url(), vid)
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}
vacuumLocationList := NewVolumeLocationList()
for range locationlist.list {
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select {
case index := <-ch:
if index != -1 {
vacuumLocationList.list = append(vacuumLocationList.list, locationlist.list[index])
}
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case <-time.After(30 * time.Minute):
return vacuumLocationList, false
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}
}
return vacuumLocationList, errCount == 0 && len(vacuumLocationList.list) > 0
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}
func batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId,
locationlist *VolumeLocationList, preallocate int64) bool {
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vl.accessLock.Lock()
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vl.removeFromWritable(vid)
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vl.accessLock.Unlock()
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ch := make(chan bool, locationlist.Length())
for index, dn := range locationlist.list {
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go func(index int, url string, vid needle.VolumeId) {
glog.V(0).Infoln(index, "Start vacuuming", vid, "on", url)
err := operation.WithVolumeServerClient(url, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, err := volumeServerClient.VacuumVolumeCompact(context.Background(), &volume_server_pb.VacuumVolumeCompactRequest{
VolumeId: uint32(vid),
Preallocate: preallocate,
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})
return err
})
if err != nil {
glog.Errorf("Error when vacuuming %d on %s: %v", vid, url, err)
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ch <- false
} else {
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glog.V(0).Infof("Complete vacuuming %d on %s", vid, url)
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ch <- true
}
}(index, dn.Url(), vid)
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}
isVacuumSuccess := true
for range locationlist.list {
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select {
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case canCommit := <-ch:
isVacuumSuccess = isVacuumSuccess && canCommit
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case <-time.After(30 * time.Minute):
return false
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}
}
return isVacuumSuccess
}
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func batchVacuumVolumeCommit(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) bool {
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isCommitSuccess := true
isReadOnly := false
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for _, dn := range locationlist.list {
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glog.V(0).Infoln("Start Committing vacuum", vid, "on", dn.Url())
err := operation.WithVolumeServerClient(dn.Url(), grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
resp, err := volumeServerClient.VacuumVolumeCommit(context.Background(), &volume_server_pb.VacuumVolumeCommitRequest{
VolumeId: uint32(vid),
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})
if resp.IsReadOnly {
isReadOnly = true
}
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return err
})
if err != nil {
glog.Errorf("Error when committing vacuum %d on %s: %v", vid, dn.Url(), err)
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isCommitSuccess = false
} else {
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glog.V(0).Infof("Complete Committing vacuum %d on %s", vid, dn.Url())
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}
}
if isCommitSuccess {
for _, dn := range locationlist.list {
vl.SetVolumeAvailable(dn, vid, isReadOnly)
}
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}
return isCommitSuccess
}
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func batchVacuumVolumeCleanup(grpcDialOption grpc.DialOption, vl *VolumeLayout, vid needle.VolumeId, locationlist *VolumeLocationList) {
for _, dn := range locationlist.list {
glog.V(0).Infoln("Start cleaning up", vid, "on", dn.Url())
err := operation.WithVolumeServerClient(dn.Url(), grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, err := volumeServerClient.VacuumVolumeCleanup(context.Background(), &volume_server_pb.VacuumVolumeCleanupRequest{
VolumeId: uint32(vid),
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})
return err
})
if err != nil {
glog.Errorf("Error when cleaning up vacuum %d on %s: %v", vid, dn.Url(), err)
} else {
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glog.V(0).Infof("Complete cleaning up vacuum %d on %s", vid, dn.Url())
}
}
}
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func (t *Topology) Vacuum(grpcDialOption grpc.DialOption, garbageThreshold float64, preallocate int64) int {
// if there is vacuum going on, return immediately
swapped := atomic.CompareAndSwapInt64(&t.vacuumLockCounter, 0, 1)
if !swapped {
return 0
}
defer atomic.StoreInt64(&t.vacuumLockCounter, 0)
// now only one vacuum process going on
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glog.V(1).Infof("Start vacuum on demand with threshold: %f", garbageThreshold)
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for _, col := range t.collectionMap.Items() {
c := col.(*Collection)
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for _, vl := range c.storageType2VolumeLayout.Items() {
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if vl != nil {
volumeLayout := vl.(*VolumeLayout)
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vacuumOneVolumeLayout(grpcDialOption, volumeLayout, c, garbageThreshold, preallocate)
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}
}
}
return 0
}
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func vacuumOneVolumeLayout(grpcDialOption grpc.DialOption, volumeLayout *VolumeLayout, c *Collection, garbageThreshold float64, preallocate int64) {
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volumeLayout.accessLock.RLock()
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tmpMap := make(map[needle.VolumeId]*VolumeLocationList)
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for vid, locationList := range volumeLayout.vid2location {
tmpMap[vid] = locationList.Copy()
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}
volumeLayout.accessLock.RUnlock()
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for vid, locationList := range tmpMap {
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volumeLayout.accessLock.RLock()
isReadOnly := volumeLayout.readonlyVolumes.IsTrue(vid)
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volumeLayout.accessLock.RUnlock()
if isReadOnly {
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continue
}
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glog.V(2).Infof("check vacuum on collection:%s volume:%d", c.Name, vid)
if vacuumLocationList, needVacuum := batchVacuumVolumeCheck(
grpcDialOption, volumeLayout, vid, locationList, garbageThreshold); needVacuum {
if batchVacuumVolumeCompact(grpcDialOption, volumeLayout, vid, vacuumLocationList, preallocate) {
batchVacuumVolumeCommit(grpcDialOption, volumeLayout, vid, vacuumLocationList)
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} else {
batchVacuumVolumeCleanup(grpcDialOption, volumeLayout, vid, vacuumLocationList)
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}
}
}
}