From: "Marcin Mirosław" <marcin@mejor.pl>
To: Kent Overstreet <kent.overstreet@gmail.com>
Cc: linux-bcache@vger.kernel.org
Subject: Re: [bcachefs] bcache (dm-10): IO error on dm-10 for checksum error (due to change of str_hash?)
Date: Fri, 16 Sep 2016 13:17:39 +0200 [thread overview]
Message-ID: <4ce5eedb-8e38-ef94-e01e-b46f9ce8c4d4@mejor.pl> (raw)
In-Reply-To: <20160916091627.nmu2syyabwcohhh3@kmo-pixel>
W dniu 16.09.2016 o 11:16, Kent Overstreet pisze:
> On Fri, Sep 16, 2016 at 11:02:10AM +0200, Marcin Mirosław wrote:
>> W dniu 16.09.2016 o 10:38, Kent Overstreet pisze:
>> [...]
>>> I haven't yet tried randomly flipping the compression type at runtime, I'll try
>>> that now...
>>
>> Don't forget changing other options, simply changing compression type I
>> tested some times ago and it worked;) I think that also heavy writes
>> while making changes are important.
>
> Yeah, I think you're right about heavy writes - the one other bug remotely like
> this that's been reported was an intermittent deadlock under heavy write load.
>
> But "heavy write workload" describes a lot of the tests I already have, so I'm
> not sure what I'm missing. Argh.
I used rsync to make noise:) Ok, With netconsole's help I have:
[11055.485337] bcache (dm-11): journal replay done, 0 keys in 1 entries,
seq 3451
< now I'm starting rsync on earlier used fs, problem happened soon >
[11159.293119] Kernel panic - not syncing: stack-protector: Kernel stack
is corrupted in: ffffffffc095b021
[11159.293157] CPU: 0 PID: 30023 Comm: rsync Tainted: P O
4.7.0-bcache+ #2
[11159.293166] Hardware name: . . /IP35 Pro XE(Intel P35-ICH9R), BIOS
6.00 PG 09/09/2008
[11159.293176] 0000000000000086
00000000414f6380
ffff88002814fae0
ffffffff812cbe0d
[11159.293537] Kernel Offset: disabled
[11159.296006] ---[ end Kernel panic - not syncing: stack-protector:
Kernel stack is corrupted in: ffffffffc095b021
New lines can be broken, I used tcpdump to catch messages.
Marcin
next prev parent reply other threads:[~2016-09-16 11:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 9:36 [bcachefs] bcache (dm-10): IO error on dm-10 for checksum error (due to change of str_hash?) Marcin Mirosław
2016-09-15 9:39 ` Marcin Mirosław
2016-09-16 2:12 ` Kent Overstreet
2016-09-16 3:33 ` Kent Overstreet
2016-09-16 8:07 ` Marcin Mirosław
2016-09-16 8:38 ` Kent Overstreet
2016-09-16 9:02 ` Marcin Mirosław
2016-09-16 9:16 ` Kent Overstreet
2016-09-16 11:17 ` Marcin Mirosław [this message]
2016-09-16 11:24 ` Kent Overstreet
2016-09-16 12:27 ` Marcin Mirosław
2016-09-16 12:36 ` Kent Overstreet
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