Re: machine gets unresponsive during btrfs balance

["Yan, Zheng " <yanzheng@21cn.com>]

On Thu, Aug 12, 2010 at 3:14 PM, Andreas Philipp
<philipp.andreas@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.

Thanks
Yan, Zheng