On Friday, February 26, 2016 12:07:57 PM, Prasanna Kumar Kalever wrote: > Hi, > > I have a VM file with reflinks to it, the reflinks were taken every night. > > My question is how to copy/migrate all these file to a different xfs > partition (which also have reflink enabled) without loosing the reflinks > property, else may lead to copy all the shared blocks per file which will > cost large disk space. > > I have tried to copy them using rsync as below: > > On Partition 1: > > ActualFile.img -- [1] Actaul Size 10GB + [2] Append 2GB + [3] Append 1GB > ReflinkCopy1 -- [1] Actual Size 0 -- Shared blocks 10GB > ReflinkCopy2 -- [2] Actual Size 0 -- Shared blocks 12GB > > > I have first rsync the files into Partition 2 as below: > > # cd PARTITION2 > > # rsync /PARTITION1/ReflinkCopy1 ActualFile.img > # du -sh ActualFile.img > 10GB > # cp --reflink=always ActualFile.img > > # rsync /PARTITION1/ReflinkCopy2 ActualFile.img > # du -sh ActualFile.img > 12GB > # cp --reflink=always ActualFile.img > > # rsync /PARTITION1/ActualFile.img ActualFile.img > > But the size used by partition was 35GB (verified using df -h) instead of > 13GB Hurreyyy!!!!.... err.. While experimenting with rsync found "--no-whole-file" && "--inplace" , with these options it seems to be working #rsync --no-whole-file --inplace --human-readable --stats reflinks/file ../mount2/reflinks/file Number of files: 1 (reg: 1) Number of created files: 0 Number of deleted files: 0 Number of regular files transferred: 1 Total file size: 69.63M bytes Total transferred file size: 69.63M bytes Literal data: 8.20M bytes Matched data: 61.43M bytes File list size: 0 File list generation time: 0.001 seconds File list transfer time: 0.000 seconds Total bytes sent: 8.23M Total bytes received: 54.95K But I still need to repeat the process of taking reflinks multiple times on new partition (per file). Did not had luck to figure-out reflink related tools (du, ls ...) -Prasanna > > > > Also, where can I find reflink related tools ? > > > Thanks, > -Prasanna > > > _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
