Re: [PULL] Btrfs for 4.7, part 2

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On Fri, May 27, 2016 at 01:18:22PM +0200, David Sterba wrote:
> On Thu, May 26, 2016 at 08:14:14PM -0400, Chris Mason wrote:
> > On Thu, May 26, 2016 at 11:27:06AM +0200, David Sterba wrote:
> > > Hi,
> > > 
> > > please pull a few more patches that did not go to pull #1 for 4.7, minor
> > > cleanups and fixes. Thanks.
> > 
> > Thanks Dave!  Trying to figure out why we're failing btrfs/011, but I
> > don't see how it could be related to this bunch.  I'll nail it down.
> 
> 011 passes here, there are some unrelated soft-failures (mismatching
> output with new progs). I'm now testing a branch without "btrfs: scrub:
> Set bbio to NULL before calling btrfs_map_block", that seems to be the
> only likely offender.

I'm getting errors from btrfs fi show -d, after the very last round of
device replaces.  A little extra debugging:

bytenr mismatch, want=4332716032, have=0
ERROR: cannot read chunk root
ERROR reading /dev/vdh
failed /dev/vdh

Which is cute because the very next command we run fscks /dev/vdh and
succeeds.

So the page cache is stale and this isn't related to any of our patches.

-chris

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