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From: jim owens <jowens@hp.com>
To: Andi Drebes <lists-receive@programmierforen.de>,
	linux-btrfs@vger.kernel.org
Subject: Re: Unable to mount loopback devices in RAID mode
Date: Mon, 30 Nov 2009 08:09:28 -0500	[thread overview]
Message-ID: <4B13C408.10606@hp.com> (raw)
In-Reply-To: <20091130042851.GG25509@jsoft.dyndns.org>

Jean-S=E9bastien Trottier wrote:
> On Fri, Nov 27, 2009 at 10:57:45AM -0500, jim owens wrote:
>> Jean-S=E9bastien Trottier wrote:
>>> In the case of RAID1 (or even RAID10), what happens if loop0 is the
>>> current master but is corrupted/dead and you want to mount loop1 to
>>> recover your data?
>> The problem does not occur with raid1.  In that case, both copies
>> are updated and either can mount.  For raid10, 2 of the 4 devices
>> should always be mountable (you still have to find which 2).
>=20
> Hmmm... But Andi's original post shows he was having this problem wit=
h
> RAID1, no?

Ah, yes, I missed the raid1 part on the original post.

So I do not understand why it does not work correctly for
him to mount either device.  Maybe this problem is not
what I see in my testing (using 32) with disk partitions
instead of loop.

With partitions, I only see the mount problem on raid0,
not on raid1.

jim
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  reply	other threads:[~2009-11-30 13:09 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-19 19:26 Unable to mount loopback devices in RAID mode Andi Drebes
2009-11-19 23:35 ` jim owens
2009-11-20 19:22   ` Andi Drebes
2009-11-27  5:33     ` Jean-Sébastien Trottier
2009-11-27 15:57       ` jim owens
2009-11-30  4:28         ` Jean-Sébastien Trottier
2009-11-30 13:09           ` jim owens [this message]
2009-11-30 19:25             ` Andi Drebes
2009-12-01  5:56               ` TARUISI Hiroaki
2009-12-01 10:27                 ` Leszek Ciesielski
2009-12-01 23:52                   ` TARUISI Hiroaki

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