You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.5 KiB
91 lines
2.5 KiB
package storage
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"time"
|
|
|
|
"github.com/chrislusf/seaweedfs/go/glog"
|
|
)
|
|
|
|
func (v *Volume) garbageLevel() float64 {
|
|
return float64(v.nm.DeletedSize()) / float64(v.ContentSize())
|
|
}
|
|
|
|
func (v *Volume) Compact() error {
|
|
glog.V(3).Infof("Compacting ...")
|
|
//no need to lock for copy on write
|
|
//v.accessLock.Lock()
|
|
//defer v.accessLock.Unlock()
|
|
//glog.V(3).Infof("Got Compaction lock...")
|
|
|
|
filePath := v.FileName()
|
|
glog.V(3).Infof("creating copies for volume %d ...", v.Id)
|
|
return v.copyDataAndGenerateIndexFile(filePath+".cpd", filePath+".cpx")
|
|
}
|
|
func (v *Volume) commitCompact() error {
|
|
glog.V(3).Infof("Committing vacuuming...")
|
|
v.accessLock.Lock()
|
|
defer v.accessLock.Unlock()
|
|
glog.V(3).Infof("Got Committing lock...")
|
|
_ = v.dataFile.Close()
|
|
var e error
|
|
if e = os.Rename(v.FileName()+".cpd", v.FileName()+".dat"); e != nil {
|
|
return e
|
|
}
|
|
if e = os.Rename(v.FileName()+".cpx", v.FileName()+".idx"); e != nil {
|
|
return e
|
|
}
|
|
//glog.V(3).Infof("Pretending to be vacuuming...")
|
|
//time.Sleep(20 * time.Second)
|
|
if e = v.load(true, false, v.needleMapKind); e != nil {
|
|
return e
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (v *Volume) copyDataAndGenerateIndexFile(dstName, idxName string) (err error) {
|
|
var (
|
|
dst, idx *os.File
|
|
)
|
|
if dst, err = os.OpenFile(dstName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
|
|
return
|
|
}
|
|
defer dst.Close()
|
|
|
|
if idx, err = os.OpenFile(idxName, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
|
|
return
|
|
}
|
|
defer idx.Close()
|
|
|
|
nm := NewNeedleMap(idx)
|
|
new_offset := int64(SuperBlockSize)
|
|
|
|
now := uint64(time.Now().Unix())
|
|
|
|
err = ScanVolumeFile(v.dir, v.Collection, v.Id, v.needleMapKind,
|
|
func(superBlock SuperBlock) error {
|
|
superBlock.CompactRevision++
|
|
_, err = dst.Write(superBlock.Bytes())
|
|
return err
|
|
}, true, func(n *Needle, offset int64) error {
|
|
if n.HasTtl() && now >= n.LastModified+uint64(v.Ttl.Minutes()*60) {
|
|
return nil
|
|
}
|
|
nv, ok := v.nm.Get(n.Id)
|
|
glog.V(4).Infoln("needle expected offset ", offset, "ok", ok, "nv", nv)
|
|
if ok && int64(nv.Offset)*NeedlePaddingSize == offset && nv.Size > 0 {
|
|
if err = nm.Put(n.Id, uint32(new_offset/NeedlePaddingSize), n.Size); err != nil {
|
|
return fmt.Errorf("cannot put needle: %s", err)
|
|
}
|
|
if _, err = n.Append(dst, v.Version()); err != nil {
|
|
return fmt.Errorf("cannot append needle: %s", err)
|
|
}
|
|
new_offset += n.DiskSize()
|
|
glog.V(3).Infoln("saving key", n.Id, "volume offset", offset, "=>", new_offset, "data_size", n.Size)
|
|
}
|
|
return nil
|
|
})
|
|
|
|
return
|
|
}
|