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From: list@jonas-server.de
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Emmanuel Florac <eflorac@intellique.com>,
	Brian Foster <bfoster@redhat.com>,
	linux-xfs@vger.kernel.org, linux-xfs-owner@vger.kernel.org
Subject: Re: XFS Calltraces by using XFS with Ceph
Date: Mon, 10 Jul 2017 08:34:48 +0200	[thread overview]
Message-ID: <b0762ee29a99f864e0be1e2ea7118baf@jonas-server.de> (raw)
In-Reply-To: <82ba16f5a8bec542ec56c1d4b7fe473e@jonas-server.de>

Am 2017-06-19 12:17, schrieb list@jonas-server.de:
> Am 2017-06-16 19:46, schrieb Darrick J. Wong:
>> On Fri, Jun 16, 2017 at 07:37:11AM +0200, list@jonas-server.de wrote:
>>> Am 2017-06-15 19:20, schrieb Emmanuel Florac:
>>> >Le Thu, 15 Jun 2017 07:55:12 +0200
>>> >list@jonas-server.de écrivait:
>>> >
>>> >>> Looking at the new Elixir[1], it looks like we're trying to deref
>>> >>> ((*bpp)->b_addr)->magic, so that might explain the crash you see.
>>> >>>
>>> >>> --D
>>> >>>
>>> >>> [1]
>>> >>> http://elixir.free-electrons.com/linux/v4.4.72/source/fs/xfs/libxfs/xfs_da_btree.c#L270
>>> >>>
>>> >>>>
>>> >
>>> >Indeed that matches exactly the crash Darrick mentioned. Looks like you
>>> >need either a special hand-patched kernel... or wait for an official
>>> >fix for this one :/
>>> 
>>> When will a fix normally be in the ubuntu kernel? I need to have a 
>>> stable
>>> distribution kernel, I can not install a patched version.
>> 
>> Like Emmanuel said, first a fix has to go upstream, then it can go to 
>> the
>> 4.4 stable kernel, and then it'll probably end up in the Ubuntu 
>> kernel.
>> 
>> Can you post a metadump of the xfs filesystem somewhere for further
>> analysis?  I'm pretty sure it's the same problem reported by David 
>> Shaw
>> on this list a couple of weeks ago.  Since you can't run one-off test
>> kernels, send us a metadump for recreation in a lab is the only other
>> way to figure out if the fix works.
> 
> So it is hard for me to run tests with untested kernels as the system 
> is already
> used in production. I've created a metadump from the xfs filesystem and
> uploaded it:
> https://transfer.sh/XdlZ5/xfs_metadump.gz
> 
> I hope it helps you trigger the bug during your tests.

So what about the issue? Is there a fix available? Will it get upstream 
in the next time?
I'm looking forward hearing about that topic.

> 
>> 
>> (And yes, I /do/ have a lightly tested fix which I'm about to send 
>> out.)
>> 
>> --D
>> 
>>> --
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      reply	other threads:[~2017-07-10  6:34 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-14  8:22 XFS Calltraces by using XFS with Ceph list
2017-06-14 12:08 ` Brian Foster
2017-06-14 13:22   ` list
2017-06-14 14:07     ` Brian Foster
2017-06-14 15:55       ` Darrick J. Wong
2017-06-15  5:55         ` list
2017-06-15 17:20           ` Emmanuel Florac
2017-06-16  5:37             ` list
2017-06-16 13:15               ` Emmanuel Florac
2017-06-16 17:46               ` Darrick J. Wong
2017-06-19 10:17                 ` list
2017-07-10  6:34                   ` list [this message]

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