From: Tim Small <tim@seoss.co.uk>
To: Neil Brown <neilb@suse.de>
Cc: "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
Subject: Re: Deadlock in md barrier code? / RAID1 / LVM CoW snapshot + ext3 / Debian 5.0 - lenny 2.6.26 kernel
Date: Tue, 21 Sep 2010 22:02:25 +0100 [thread overview]
Message-ID: <4C991D61.1040400@seoss.co.uk> (raw)
In-Reply-To: <4C97BD21.1040405@seoss.co.uk>
Tim Small wrote:
> http://buttersideup.com/files/md-raid1-lockup-lvm-snapshot/iodeadlock-sysrq-t.txt
>
> ... this was soon after the io to md2 stopped - md0 seems fine...
>
> oldshoreham:~# cat /proc/mdstat
> Personalities : [raid1]
> md2 : active raid1 sda6[0] sdb6[1]
> 404600128 blocks [2/2] [UU]
> [>....................] resync = 0.1% (437056/404600128)
> finish=343321.2min speed=19K/sec
>
>
> ... I also tried an older Debian 5.0.x kernel from Mar 2009, which is a
> less-patched 2.6.26, and got the same results. 2.6.32 hasn't deadlocked
> after 10 minutes (2.6.26 usually does within a minute of boot-up), so
> I'll leave it re-syncing overnight...
>
2.6.32 resynced to completion, but if possible I'd really like to get
2.6.26 running on this box, as it uses openvz, and the 2.6.32 openvz
patches are still pretty green, I think. Is their anything in the
sysrq-t output in that link of any use? Are there any patches I should
try, or would it be better to start bisecting between 2.6.26 and 2.6.32
(assuming I can reproduce the problem without the load pattern which
openvz is producing - which I probably can).
Cheers,
Tim.
--
South East Open Source Solutions Limited
Registered in England and Wales with company number 06134732.
Registered Office: 2 Powell Gardens, Redhill, Surrey, RH1 1TQ
VAT number: 900 6633 53 http://seoss.co.uk/ +44-(0)1273-808309
next prev parent reply other threads:[~2010-09-21 21:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-17 14:53 Deadlock in md barrier code? / RAID1 / LVM CoW snapshot + ext3 / Debian 5.0 - lenny 2.6.26 kernel Tim Small
2010-09-17 22:59 ` Neil Brown
2010-09-20 19:59 ` Tim Small
2010-09-21 21:02 ` Tim Small [this message]
2010-09-21 22:30 ` Neil Brown
2010-10-12 13:59 ` Tim Small
2010-10-12 14:06 ` Tim Small
2010-10-12 16:48 ` CoolCold
2010-10-13 8:51 ` Tim Small
2010-10-13 13:00 ` CoolCold
2010-10-18 18:52 ` Tim Small
2010-10-19 6:16 ` Neil Brown
2010-10-19 16:24 ` Tim Small
2010-10-19 16:29 ` Tim Small
2010-10-19 19:29 ` Tim Small
2010-10-20 20:34 ` Tim Small
2010-10-20 23:04 ` Neil Brown
2010-11-18 18:04 ` Tim Small
2010-11-21 23:05 ` Neil Brown
2010-12-06 15:42 ` Tim Small
2010-09-21 22:21 ` Neil Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4C991D61.1040400@seoss.co.uk \
--to=tim@seoss.co.uk \
--cc=linux-raid@vger.kernel.org \
--cc=neilb@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.