On 12/07/2015 03:29 PM, Alex Gorbachev wrote:
When trying to merge two results of rbd export-diff, the following error occurs:iss@lab2-b1:~$ rbd export-diff --from-snap autosnap120720151500 spin1/scrun1@autosnap120720151502 /data/volume1/scrun1-120720151502.bck iss@lab2-b1:~$ rbd export-diff --from-snap autosnap120720151504 spin1/scrun1@autosnap120720151504 /data/volume1/scrun1-120720151504.bck iss@lab2-b1:~$ rbd merge-diff /data/volume1/scrun1-120720151502.bck /data/volume1/scrun1-120720151504.bck /data/volume1/mrg-scrun1-0204.bck Merging image diff: 11% complete...failed. rbd: merge-diff error That's all the output and I have found this link http://tracker.ceph.com/issues/12911 but not sure if the patch should have already been in hammer or how to get it?
That patch fixed a bug that was only present after hammer, due to parallelizing export-diff. You're likely seeing a different (possibly new) issue. Unfortunately there's not much output we can enable for export-diff in hammer. Could you try running the command via gdb to figure out where and why it's failing? Make sure you have librbd-dbg installed, then send the output from gdb doing: gdb --args rbd merge-diff /data/volume1/scrun1-120720151502.bck \ /data/volume1/scrun1-120720151504.bck /data/volume1/mrg-scrun1-0204.bck break rbd.cc:1931 break rbd.cc:1935 break rbd.cc:1967 break rbd.cc:1985 break rbd.cc:1999 break rbd.cc:2008 break rbd.cc:2021 break rbd.cc:2053 break rbd.cc:2098 run # (it will run now, stopping when it hits the error) info locals Josh _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
