Re: Linux 3.14.18 : kernel BUG at fs/btrfs/file.c:890!

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On Mon, 08 Sep 2014 11:39:57 +0200, Olivier Bonvalet wrote:

> Ok, so the cause is probably solved, this is a very good news, thanks.

I don't *know* that this is your specific problem, it just looks like it
might be judging by the description in the patch.

> And yes, I can easily use 3.17-rc3 kernel.

Good.

> So the problem is with current data : I don't know an easy way to
> export/restore subvolumes & snapshots thought network, and I don't have
> physical access to this rent servers.

That's tricky, especially the snapshots. I don't remember seeing how
large the partition in question is, but is there really no place where
you can store a simple tar.gz dump, nuke & recreate the partition and
restore the tarball? If so I'm afraid you are what's known as
"up shit creek without a paddle"..

> Any hope that btrfsck be updated to fix that ?

By default btrfsck doesn't do anything. What happens when you run it
without --repair, just to see what it finds?

-h

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