From: "Pavel Palát" <pavel.palat-UDV0GzaorVTrBKCeMvbIDA@public.gmane.org>
To: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: bcache writeback hang with 3.11.5 and 3.10.17
Date: Fri, 25 Oct 2013 11:00:19 +0200 [thread overview]
Message-ID: <526A3323.4030608@devsoft.cz> (raw)
In-Reply-To: <5263DDC9.6050705-UDV0GzaorVTrBKCeMvbIDA@public.gmane.org>
On 20.10.2013 15:42, Pavel Palát wrote:
> Hello,
>
> I have experienced hangs with above kernel and bcache in writeback
> mode. Hangs are very easily archieved - just do:
>
> mkdir /data/tmp
> cp -xar / /data/tmp
>
> Cancel after 1-5 minutes, then do sync (sometimes don't needed) and it
> hangs. Either the sync hangs and/or the cp (or rm /data/tmp).
> Behaviour is very consistent, it happens every time I enable writeback
> and perform IO heavy operations.
>
> I have not experienced the issue so far with writethrough mode.
>
> Hardware is HP j000ec, attaching dmesg from hanged box with both
> 3.11.5 and 3.10.17 LTS kernel. Distribution is arch linux.
>
> dmesg outputs is available on
> http://www.devsoft.cz/upload/bcache_bugreport.tar.gz
>
> P.
Hello,
update: Tried with 3.12rc6 with same results. It also hangs with writeback.
http://www.devsoft.cz/upload/bcache_312.txt
Best regards,
Pavel Palat
prev parent reply other threads:[~2013-10-25 9:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-20 13:42 bcache writeback hang with 3.11.5 and 3.10.17 Pavel Palát
[not found] ` <5263DDC9.6050705-UDV0GzaorVTrBKCeMvbIDA@public.gmane.org>
2013-10-25 9:00 ` Pavel Palát [this message]
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