From: NeilBrown <neilb@suse.de>
To: Jonathan Tripathy <jonnyt@abpni.co.uk>
Cc: linux-raid@vger.kernel.org
Subject: Re: Raid Checks
Date: Sun, 3 Apr 2011 21:01:57 +1000 [thread overview]
Message-ID: <20110403210157.2c3ac83d@notabene.brown> (raw)
In-Reply-To: <4D98346F.8090502@abpni.co.uk>
On Sun, 03 Apr 2011 09:48:47 +0100 Jonathan Tripathy <jonnyt@abpni.co.uk>
wrote:
>
> On 03/04/11 09:31, Jonathan Tripathy wrote:
> > Hi Everyone,
> >
> > I'm running CentOS 5.5 which a stock version of mdadm. I have 2
> > physical disks in a RAID1 setup. Each disk has 4 md partitions on it.
> >
> > I'm experiencing the issues associated with the raid-check script
> > every Sunday morning, where whatever is happening, a re-sync happens.
> > Doing a little reading around Google, I see that this is probably
> > caused by the mismatch_cnt being non-zero, which apparently is normal
> > for RAID1 devices. According to this bug:
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=566828
> >
> > someone has made a patch for RedHat so that mismatch_cnt isn't checked
> > on RAID1 setups. However, since I don't use RedHat, and I don't really
> > want to compile mdadm from scratch, is there a workaround for this? I
> > don't want to just disable the raid-check script, as I think it does
> > some other important checks which are useful for RAID1.
> >
> > Any help would be appreciated
> >
> > Thanks
> >
> Seems like I'm a little confused...
>
> To apply that patch, I don't need to re-compile, as it's just a script
> run by cron. However, looking at the script, it may not fix my "resync"
> issue which is happening every Sunday. Looks like that script just stops
> the mismatch warning email from being sent.
>
> My main concern, is that during these resyncs, I loose redundancy, don't I?
No.
NeilBrown
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next prev parent reply other threads:[~2011-04-03 11:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-03 8:31 Raid Checks Jonathan Tripathy
2011-04-03 8:48 ` Jonathan Tripathy
2011-04-03 11:01 ` NeilBrown [this message]
2011-04-03 11:04 ` Jonathan Tripathy
2011-04-03 11:19 ` NeilBrown
2011-04-03 11:30 ` Jonathan Tripathy
2011-04-03 12:18 ` John Robinson
2011-04-03 19:02 ` Jonathan Tripathy
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