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some changes to prepare fix after failed reads
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parent
78859e35fc
commit
bd8b9b0c2e
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@ -93,6 +93,10 @@ func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
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} else if hasEcVolume {
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} else if hasEcVolume {
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count, err = vs.store.ReadEcShardNeedle(volumeId, n)
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count, err = vs.store.ReadEcShardNeedle(volumeId, n)
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}
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}
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if err != nil && err != storage.ErrorDeleted && r.FormValue("type") != "replicate" && hasVolume {
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glog.V(4).Infoln("read needle: %v", err)
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// start to fix it from other replicas, if not deleted and hasVolume and is not a replicated request
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}
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// glog.V(4).Infoln("read bytes", count, "error", err)
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// glog.V(4).Infoln("read bytes", count, "error", err)
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if err != nil || count < 0 {
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if err != nil || count < 0 {
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glog.V(3).Infof("read %s isNormalVolume %v error: %v", r.URL.Path, hasVolume, err)
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glog.V(3).Infof("read %s isNormalVolume %v error: %v", r.URL.Path, hasVolume, err)
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@ -128,7 +128,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
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return 0, fmt.Errorf("locate in local ec volume: %v", err)
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return 0, fmt.Errorf("locate in local ec volume: %v", err)
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}
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}
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if size.IsDeleted() {
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if size.IsDeleted() {
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return 0, fmt.Errorf("entry %s is deleted", n.Id)
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return 0, ErrorDeleted
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}
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}
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glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToAcutalOffset(), size, intervals)
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glog.V(3).Infof("read ec volume %d offset %d size %d intervals:%+v", vid, offset.ToAcutalOffset(), size, intervals)
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@ -141,7 +141,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
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return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
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return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
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}
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}
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if isDeleted {
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if isDeleted {
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return 0, fmt.Errorf("ec entry %s is deleted", n.Id)
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return 0, ErrorDeleted
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}
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}
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err = n.ReadBytes(bytes, offset.ToAcutalOffset(), size, localEcVolume.Version)
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err = n.ReadBytes(bytes, offset.ToAcutalOffset(), size, localEcVolume.Version)
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@ -16,6 +16,7 @@ import (
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)
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)
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var ErrorNotFound = errors.New("not found")
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var ErrorNotFound = errors.New("not found")
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var ErrorDeleted = errors.New("already deleted")
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// isFileUnchanged checks whether this needle to write is same as last one.
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// isFileUnchanged checks whether this needle to write is same as last one.
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// It requires serialized access in the same volume.
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// It requires serialized access in the same volume.
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@ -266,7 +267,7 @@ func (v *Volume) readNeedle(n *needle.Needle, readOption *ReadOption) (int, erro
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glog.V(3).Infof("reading deleted %s", n.String())
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glog.V(3).Infof("reading deleted %s", n.String())
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readSize = -readSize
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readSize = -readSize
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} else {
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} else {
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return -1, errors.New("already deleted")
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return -1, ErrorDeleted
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}
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}
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}
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}
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if readSize == 0 {
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if readSize == 0 {
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