linux-kernel - Re: [OOPS] 2.6.21-rc6-git5 in cfq_dispatch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <462481A0.4060707@wasp.net.au>
Date:	Tue, 17 Apr 2007 12:13:20 +0400
From:	Brad Campbell <brad@...p.net.au>
To:	Neil Brown <neilb@...e.de>
CC:	Chuck Ebbert <cebbert@...hat.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [OOPS] 2.6.21-rc6-git5 in cfq_dispatch_insert

Neil Brown wrote:
> On Monday April 16, cebbert@...hat.com wrote:
>> cfq_dispatch_insert() was called with rq == 0. This one is getting really
>> annoying... and md is involved again (RAID0 this time.)
> 
> Yeah... weird.
> RAID0 is so light-weight and so different from RAID1 or RAID5 that I
> feel fairly safe concluding that the problem isn't in or near md.
> But that doesn't help you.

It's raid-5 here and it was degraded. I've just added the extra disk now and I've been running with 
the deadline scheduler to work around the issue. I'll add Neil's patch and try some tests with cfq 
tonight if I get the chance.

Brad
-- 
"Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so." -- Douglas Adams
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/