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weed backup: efficient delta backup

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fix https://github.com/chrislusf/seaweedfs/issues/399
This commit is contained in:
Chris Lu committed 2019-03-25 23:01:53 -07:00
1 parent c913583e2d
commit df95ce0b6c
6 files changed
+47 -21
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weed/command/export.go
+1 -1
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@@ -107,7 +107,7 @@ func (scanner *VolumeFileScanner4Export) VisitNeedle(n *storage.Needle, offset i
nv, ok := needleMap.Get(n.Id)
glog.V(3).Infof("key %d offset %d size %d disk_size %d gzip %v ok %v nv %+v",
n.Id, offset, n.Size, n.DiskSize(scanner.version), n.IsGzipped(), ok, nv)
if ok && nv.Size > 0 && int64(nv.Offset)*types.NeedlePaddingSize == offset {
if ok && nv.Size > 0 && nv.Size != types.TombstoneFileSize && int64(nv.Offset)*types.NeedlePaddingSize == offset {
if newerThanUnix >= 0 && n.HasLastModifiedDate() && n.LastModified < uint64(newerThanUnix) {
glog.V(3).Infof("Skipping this file, as it's old enough: LastModified %d vs %d",
n.LastModified, newerThanUnix)