From: Chris Mason <clm@fb.com>
To: Andrea Gelmini <andrea.gelmini@gelma.net>
Cc: Qu Wenruo <quwenruo.btrfs@gmx.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: Linux-next regression?
Date: Wed, 5 Dec 2018 19:32:31 +0000 [thread overview]
Message-ID: <6CC21012-713A-4B99-B968-6625556C9D1E@fb.com> (raw)
In-Reply-To: <20181205105928.GA29665@glet>
On 5 Dec 2018, at 5:59, Andrea Gelmini wrote:
> On Tue, Dec 04, 2018 at 10:29:49PM +0000, Chris Mason wrote:
>> I think (hope) this is:
>>
>> https://bugzilla.kernel.org/show_bug.cgi?id=201685
>>
>> Which was just nailed down to a blkmq bug. It triggers when you have
>> scsi devices using elevator=none over blkmq.
>
> Thanks a lot Chris. Really.
> Good news: I confirm I recompiled and used blkmq and no-op (at that
> time).
> Also, the massive write of btrfs defrag can explain the massive
> trigger of
> the bug, and next corruption.
Sorry this happened, but glad you were able to confirm that it explains
the trouble you hit. Thanks for the report, I did end up using this as
a datapoint to convince myself the bugzilla above wasn't ext4 specific.
-chris
prev parent reply other threads:[~2018-12-05 19:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-26 15:01 Linux-next regression? Andrea Gelmini
2018-11-27 1:13 ` Qu Wenruo
2018-11-27 14:11 ` Andrea Gelmini
2018-11-27 14:16 ` Qu Wenruo
2018-11-28 16:05 ` Andrea Gelmini
2018-12-04 22:29 ` Chris Mason
2018-12-05 10:59 ` Andrea Gelmini
2018-12-05 19:32 ` Chris Mason [this message]
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