On Saturday 14 August 2010 00:11:55 Andreas Philipp wrote: > On 12.08.2010 10:04, Yan, Zheng wrote: > > On Thu, Aug 12, 2010 at 3:14 PM, Andreas Philipp > > <philipp.andr...@gmail.com> wrote: > > > >> Hi, > >> > >> I am using a btrfs filesystem created with raid0 for data and metadata > >> for (temporary) storage of tv recordings from my vdr. The filesystem was > >> created under kernel version 2.6.34. An initial btrfs balance command > >> succeeded. Since I upgraded to 2.6.35-rcX and 2.6.35 btrfs balance no > >> longer finishes but puts the machine in some unresponsive state. > >> Unfortunately, I do not see any kernel oops or other debug information > >> because even the display freezes. The last thing that happens are that > >> those two lines are written to /var/log/messages: > >> Aug 11 21:42:23 thor kernel: btrfs: found 62911 extents > >> Aug 11 21:42:24 thor kernel: btrfs: relocating block group 1723913469952 > >> flags 9 > >> After that the machine becomes immediately unresponsive. > >> > >> As I did not see anything that might be related to my problem in the > >> changelog for 2.6.35.1 I did not try again with this version. > >> > >> > > Do you have more than one machines? would you please setup netconsole > > to see what happen. > > > I have reproduced the error on v2.6.35.1 and recorded all kernel output > with netconsole. The interesting point is that this time the machine did > not crash but the btrfs balance segfaulted at exact the same position > where the previous crashes had happened.
Looks like another manifestation of the csum bug. Are you able to read all files from the affected volume? Did you tried a balance with an 2.6.34 kernel after the test with 2.6.35? regards, Johannes -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
