From: Tejun Heo <tj@kernel.org>
To: Ric Wheeler <rwheeler@redhat.com>
Cc: Andrei Tanas <andrei@tanas.ca>, NeilBrown <neilb@suse.de>,
linux-kernel@vger.kernel.org,
IDE/ATA development list <linux-ide@vger.kernel.org>,
linux-scsi@vger.kernel.org, Jeff Garzik <jgarzik@redhat.com>,
Mark Lord <mlord@pobox.com>
Subject: Re: MD/RAID time out writing superblock
Date: Mon, 31 Aug 2009 21:20:51 +0900 [thread overview]
Message-ID: <4A9BC023.10903@kernel.org> (raw)
In-Reply-To: <4A9BBC4A.6070708@redhat.com>
Ric Wheeler wrote:
>>> The drive might take a longer time like this when doing error handling
>>> (sector remapping, etc), but then I would expect to see your remapped
>>> sector count grow.
>>>
>> Yes, this is a possibility and according to the spec, libata EH should
>> be retrying flushes a few times before giving up but I'm not sure
>> whether keeping retrying for several minutes is a good idea either.
>> Is it?
>
> I don't think that retrying for minutes is a good idea. I wonder if this
> could be caused by power issues or cable issues to the drive?
IIRC, there were two identified weird reasons for flush timeouts. The
first was quirky firmware which meant that using NCQ meant timeouts on
FLUSH. The second was flaky power. So, yeah, it can be caused by
power issue. Not so sure about cable tho.
Thanks.
--
tejun
next prev parent reply other threads:[~2009-08-31 12:21 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <004e01ca25e4$c11a54e0$434efea0$@ca>
[not found] ` <9cfb6af689a7010df166fdebb1ef516b.squirrel@neil.brown.name>
[not found] ` <4A948A82.4080901@redhat.com>
[not found] ` <b585ed9f13649050bbc984869d081315.squirrel@neil.brown.name>
[not found] ` <4A94905F.7050705@redhat.com>
[not found] ` <005101ca25f4$09006830$1b013890$@ca>
[not found] ` <4A94A0E6.4020401@redhat.com>
[not found] ` <005401ca25ff$9ac91cc0$d05b5640$@ca>
[not found] ` <4A950FA6.4020408@redhat.com>
[not found] ` <92cb16daad8278b0aa98125b9e1d057a@localhost>
[not found] ` <4A95573A.6090404@redhat.com>
2009-08-26 18:12 ` MD/RAID: what's wrong with sector 1953519935? Andrei Tanas
2009-08-27 0:07 ` Mark Lord
2009-08-27 1:37 ` Andrei Tanas
2009-08-27 2:33 ` Robert Hancock
[not found] ` <d086b110526f8bac2f562850dfc70b03@localhost>
2009-08-27 21:57 ` MD/RAID time out writing superblock Ric Wheeler
2009-08-31 8:10 ` Tejun Heo
2009-08-31 12:04 ` Ric Wheeler
2009-08-31 12:20 ` Tejun Heo [this message]
2009-09-07 11:44 ` Chris Webb
2009-09-07 11:59 ` Chris Webb
2009-09-09 12:02 ` Chris Webb
2009-09-14 7:41 ` Tejun Heo
2009-09-14 7:44 ` Tejun Heo
2009-09-14 12:48 ` Mark Lord
2009-09-14 13:05 ` Tejun Heo
2009-09-14 14:25 ` Mark Lord
2009-09-16 23:19 ` Chris Webb
2009-09-17 13:29 ` Mark Lord
2009-09-17 13:32 ` Mark Lord
2009-09-17 13:37 ` Chris Webb
2009-09-17 15:35 ` Tejun Heo
2009-09-17 16:16 ` Mark Lord
2009-09-17 16:17 ` Mark Lord
2009-09-18 17:05 ` Chris Webb
2009-09-21 10:26 ` Chris Webb
2009-09-21 19:47 ` Mark Lord
2009-09-22 6:16 ` Robert Hancock
2009-09-20 18:36 ` Robert Hancock
2009-09-14 13:11 ` Henrique de Moraes Holschuh
2009-09-14 13:24 ` Tejun Heo
2009-09-14 14:02 ` Henrique de Moraes Holschuh
2009-09-14 14:34 ` Tejun Heo
2009-09-14 13:14 ` Gabor Gombas
2009-09-07 16:55 ` Allan Wind
2009-09-07 23:26 ` Thomas Fjellstrom
2009-09-14 7:46 ` Tejun Heo
2009-09-14 21:13 ` Thomas Fjellstrom
2009-09-14 22:23 ` Tejun Heo
2009-09-16 22:28 ` Chris Webb
2009-09-16 23:47 ` Tejun Heo
2009-09-17 0:34 ` Neil Brown
2009-09-17 12:00 ` Chris Webb
2009-09-17 11:57 ` Chris Webb
2009-09-17 15:44 ` Tejun Heo
2009-09-17 16:36 ` Allan Wind
2009-09-18 0:16 ` Tejun Heo
2009-09-18 2:47 ` Allan Wind
2009-09-18 17:07 ` Chris Webb
2009-09-20 18:46 ` Robert Hancock
2009-09-21 0:02 ` Kyle Moffett
2009-09-17 13:35 ` Mark Lord
2009-09-17 15:47 ` Tejun Heo
2009-08-31 12:21 ` Mark Lord
2009-08-31 23:45 ` Mark Lord
2009-09-01 13:07 ` Andrei Tanas
2009-09-01 13:15 ` Mark Lord
2009-09-01 13:30 ` Tejun Heo
2009-09-01 13:47 ` Ric Wheeler
2009-09-01 14:18 ` Andrei Tanas
2009-09-02 21:58 ` Allan Wind
2009-09-04 19:39 ` Andrei Tanas
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=4A9BC023.10903@kernel.org \
--to=tj@kernel.org \
--cc=andrei@tanas.ca \
--cc=jgarzik@redhat.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=mlord@pobox.com \
--cc=neilb@suse.de \
--cc=rwheeler@redhat.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).