Re: Anyone seeing lots of "Check tree block failed" and other errors with latest kernel?

["Richard W.M. Jones" <rjones@redhat.com>]

On Thu, Oct 11, 2012 at 07:26:28AM -0400, Chris Mason wrote:
> On Thu, Oct 11, 2012 at 01:28:21AM -0600, Richard W.M. Jones wrote:
> > Well the bad news is that the bug happened again overnight, even
> > though we were definitely using btrfs-progs with the 6eba90029 patch
> > added, _and_ it was doing a sync + fsync between the mkfs and the
> > mount.
> 
> This is good just because it makes the most sense.  The only thing worse
> than a bug is a bug that disappears for the wrong reasons ;)
> 
> > 
> > Here is the log:
> > [   17.943272] btrfs bad tree block start 0 135168
> > [   17.955270] btrfs: open_ctree failed
> 
> This is also good because it really points to the invalidate.  You've
> got zeros where we wrote 135168, and pretty much the only way to get
> zeros on a disk block is if the kernel did a memset.  Sure some app
> could have written the zeros there, but that block offset is unlikely to
> get allocated as a data block by the other filesystems.
> 
> So, I'll go back to the invalidate code ;)

Any luck on this?  It's still happening in the latest kernels.  If
there's anything / patch you want me to try, let me know.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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