From: Neil Brown <neilb@suse.de>
To: Rich Rauenzahn <rrauenza@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: reshape from raid5 to raid6 failed -- and backup file is gone?
Date: Fri, 23 Apr 2010 08:09:38 +1000 [thread overview]
Message-ID: <20100423080938.5ef90287@notabene.brown> (raw)
In-Reply-To: <q2u657cbef51004221446l41381e31hf26f96072b04983e@mail.gmail.com>
On Thu, 22 Apr 2010 14:46:32 -0700
Rich Rauenzahn <rrauenza@gmail.com> wrote:
> On Thu, Apr 22, 2010 at 11:32 AM, Rich Rauenzahn <rrauenza@gmail.com> wrote:
> > The system froze sometime in the middle of the night, and oddly... the
> > --backup-file I specified last night is missing. Is there any reason
> > that mdadm would unlink it for a short span of time during the
> > reshape?
>
> I'm at the point now where I'm just looking for triage advice so I can
> work on it tonight. Most of the contents were backed up offsite, but a
> little bit out of date. Nothing critical, but inconvenient, like
> recovery images for relative's systems.
>
> Do I kill it and start over, or is there any hope of recovering from
> the reshape?
It is very odd that the backup file disappeared. What is
/.MEDIA/tmp
?? Not a tmpfs filesystem I hope...
You could hack mdadm to assemble the array even without a backup file.
Get 'Grow_restart' to always return 0.
Then most of your data should be assessible, but the could be a section in
the middle which is currupt.
NeilBrown
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next prev parent reply other threads:[~2010-04-22 22:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 18:32 reshape from raid5 to raid6 failed -- and backup file is gone? Rich Rauenzahn
2010-04-22 21:46 ` Rich Rauenzahn
2010-04-22 22:09 ` Neil Brown [this message]
2010-04-22 22:26 ` Rich Rauenzahn
2010-04-22 22:37 ` Neil Brown
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