From: "Paweł Sikora" <pawel.sikora@agmk.net>
To: NeilBrown <neilb@suse.de>
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
arekm@pld-linux.org
Subject: Re: [3.2.2] tasks blocked during matrix auto checking.
Date: Tue, 07 Feb 2012 06:58:39 +0100 [thread overview]
Message-ID: <4142598.MA7Zy4QWhf@vmx> (raw)
In-Reply-To: <20120207094751.51e5321a@notabene.brown>
On Tuesday 07 of February 2012 09:47:51 NeilBrown wrote:
> On Mon, 06 Feb 2012 13:02 +0100 Pawel Sikora <pawel.sikora@agmk.net> wrote:
>
> > Hi,
> >
> > on heavy loaded opterons i've noticed some blocked tasks during matrix auto checking.
> > is it a known issue?
>
> No.... maybe not too surprising though.
> The data-check will pause to let other IO through, but if there is lots of IO
> queued up it could cause some longish delays...
>
> 2 minutes does seem a bit long though, so maybe there is a bug somewhere.
>
> And had 3 consecutive timeouts, so that makes it 6 minutes which really is
> too long.
>
> What sort of array was this? RAID1? RAID5 ??
~810GB in raid-10:
md2 : active raid10 sda4[0] sdd4[3] sdc4[2] sdb4[1]
849514496 blocks super 1.2 512K chunks 2 far-copies [4/4] [UUUU]
next prev parent reply other threads:[~2012-02-07 6:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-06 12:02 [3.2.2] tasks blocked during matrix auto checking Pawel Sikora
2012-02-06 22:47 ` NeilBrown
2012-02-07 5:58 ` Paweł Sikora [this message]
2012-04-01 12:49 ` [PING] " Paweł Sikora
2012-04-02 2:43 ` NeilBrown
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