mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-04 19:19:04 +08:00
b9aee2defb
The volume TTL and file TTL are not necessarily the same. as long as file TTL is smaller than volume TTL, it'll be fine. volume TTL is used when assigning file id, e.g. http://.../dir/assign?ttl=3h file TTL is used when uploading
89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
package storage
|
|
|
|
import (
|
|
"code.google.com/p/weed-fs/go/glog"
|
|
"fmt"
|
|
"os"
|
|
"time"
|
|
)
|
|
|
|
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); 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, func(superBlock SuperBlock) error {
|
|
_, 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
|
|
}
|