// parseFreeVolumeIndex parse free index from local.
func (s *Store) parseFreeVolumeIndex() (err error) {
var (
i int
id int32
bfile string
ifile string
v *volume.Volume
data []byte
ids []int32
lines []string
bfs []string
ifs []string
)
if data, err = ioutil.ReadAll(s.fvf); err != nil {
log.Errorf("ioutil.ReadAll() error(%v)", err)
return
}
lines = strings.Split(string(data), "\n")
if _, ids, bfs, ifs, err = s.parseIndex(lines); err != nil {
return
}
for i = 0; i < len(bfs); i++ {
id, bfile, ifile = ids[i], bfs[i], ifs[i]
if v, err = newVolume(id, bfile, ifile, s.conf); err != nil {
return
}
v.Close()
s.FreeVolumes = append(s.FreeVolumes, v)
if id = s.fileFreeId(bfile); id > s.FreeId {
s.FreeId = id
}
}
log.V(1).Infof("current max free volume id: %d", s.FreeId)
return
}
// AddFreeVolume add free volumes.
func (s *Store) AddFreeVolume(n int, bdir, idir string) (sn int, err error) {
var (
i int
bfile, ifile string
v *volume.Volume
)
s.flock.Lock()
for i = 0; i < n; i++ {
s.FreeId++
bfile, ifile = s.freeFile(s.FreeId, bdir, idir)
if myos.Exist(bfile) || myos.Exist(ifile) {
continue
}
if v, err = newVolume(volumeFreeId, bfile, ifile, s.conf); err != nil {
// if no free space, delete the file
os.Remove(bfile)
os.Remove(ifile)
break
}
v.Close()
s.FreeVolumes = append(s.FreeVolumes, v)
sn++
}
err = s.saveFreeVolumeIndex()
s.flock.Unlock()
return
}
// Close close the store.
// WARN the global variable store must first set nil and reject any other
// requests then safty close.
func (s *Store) Close() {
var v *volume.Volume
if s.vf != nil {
s.vf.Close()
}
if s.fvf != nil {
s.fvf.Close()
}
if s.Volumes != nil {
for _, v = range s.Volumes {
v.Close()
}
}
if s.zk != nil {
s.zk.Close()
}
return
}
// Close close the store.
// WARN the global variable store must first set nil and reject any other
// requests then safty close.
func (s *Store) Close() {
log.Info("store close")
var v *volume.Volume
if s.vf != nil {
s.vf.Close()
}
if s.fvf != nil {
s.fvf.Close()
}
for _, v = range s.Volumes {
log.Infof("volume[%d] close", v.Id)
v.Close()
}
if s.zk != nil {
s.zk.Close()
}
return
}