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From: NeilBrown <neilb@suse.de>
To: Simon Matthews <simon.d.matthews@gmail.com>
Cc: LinuxRaid <linux-raid@vger.kernel.org>
Subject: Re: Can't start array and Negative "Used Dev Size"
Date: Thu, 30 Jun 2011 10:25:22 +1000	[thread overview]
Message-ID: <20110630102522.3dd9579d@notabene.brown> (raw)
In-Reply-To: <BANLkTin7f-8tLDoZsmyFocb9j1e1wn=4Dw@mail.gmail.com>

On Wed, 29 Jun 2011 08:45:33 -0700 Simon Matthews
<simon.d.matthews@gmail.com> wrote:

> Neil,
> 
> 
> 
> On Tue, Jun 28, 2011 at 10:24 PM, Simon Matthews
> <simon.d.matthews@gmail.com> wrote:
> > Neil,
> >
> >
> >
> > On Tue, Jun 28, 2011 at 10:18 PM, NeilBrown <neilb@suse.de> wrote:
> 
> >>  mdadm -S /dev/md4
> >>  mdadm -A /dev/md4 /dev/sdc1 /dev/sdd1 --verbose
> >
> > That solved it. The array started.
> 
> Do you have any idea why the array did not start when the system
> booted? I also have an md6 on the same hard drives that was created at
> the same time as md4, but md6 started on the boot.
> 

Not really ... I would need to see logs to be at all confident.

Based on the very limit info I have my best guess is that something -
probably udev - ran
   mdadm --incremental /dev/sdc1

but didn't run
   mdadm --incremental /dev/sdd1

I cannot imagine why it would do that though.

This would have the effect of leaving sdc1 as a member of md4, but md4 still
being inactive.

NeilBrown

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  reply	other threads:[~2011-06-30  0:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-29  4:29 Can't start array and Negative "Used Dev Size" Simon Matthews
2011-06-29  5:18 ` NeilBrown
2011-06-29  5:24   ` Simon Matthews
2011-06-29  5:37     ` NeilBrown
2011-06-29  5:59       ` Simon Matthews
2011-06-29  6:18         ` NeilBrown
2011-06-29 15:45     ` Simon Matthews
2011-06-30  0:25       ` NeilBrown [this message]
2011-06-30  3:15         ` Simon Matthews
2011-07-02  4:41   ` Simon Matthews
2011-07-02  6:19     ` Simon Matthews
2011-07-04  5:45       ` Luca Berra

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