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From: Neil Brown <neilb@suse.de>
To: Sevrin Robstad <quackyo@start.no>
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: Create Raid6 with 1 missing member fails
Date: Mon, 18 Feb 2008 15:29:53 +1100	[thread overview]
Message-ID: <18361.2497.115320.689843@notabene.brown> (raw)
In-Reply-To: message from Sevrin Robstad on Sunday February 17

On Sunday February 17, quackyo@start.no wrote:
> I tried to create a raid6 with one missing member, but it fails.
> It works fine to create a raid6 with two missing members. Is it supposed 
> to be like that ?

No, it isn't supposed to be like that, but currently it is.

The easiest approach if to create it with 2 drives missing, and the
extra drive immediately.
This is essentially what mdadm will do when I fix it.

Alternately you can use --assume-clean to tell it that the array is
clean.  It is actually a lie, but it is a harmless lie. Whenever any
data is written to the array, that little part of the array will get
"cleaned". (Note that this isn't true of raid5, only of raid6).

NeilBrown

      reply	other threads:[~2008-02-18  4:29 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-17 12:37 Create Raid6 with 1 missing member fails Sevrin Robstad
2008-02-18  4:29 ` Neil Brown [this message]

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