From: Chris Murphy <lists@colorremedies.com>
To: Jon <jmoroney@hawaii.edu>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: Raid 1 recovery
Date: Wed, 18 Jan 2017 14:30:28 -0700 [thread overview]
Message-ID: <CAJCQCtRYz9Gcqfc44Je9oqjXx-H-N8nbXp0TuzZcE6SN+ZCm8A@mail.gmail.com> (raw)
In-Reply-To: <cd74d77f-bba5-6301-f0dc-6b2323adebdb@hawaii.edu>
On Wed, Jan 18, 2017 at 2:07 PM, Jon <jmoroney@hawaii.edu> wrote:
> So, I had a raid 1 btrfs system setup on my laptop. Recently I upgraded
> the drives and wanted to get my data back. I figured I could just plug
> in one drive, but I found that the volume simply would not mount. I
> tried the other drive alone and got the same thing. Plugging in both at
> the same time and the volume mounted without issue.
Requires mount option degraded.
If this is a boot volume, this is difficult because the current udev
rule prevents a mount attempt so long as all devices for a Btrfs
volume aren't present.
>
> I used raid 1 because I figured that if one drive failed I could simply
> use the other. This recovery scenario makes me think this is incorrect.
> Am I misunderstanding btrfs raid? Is there a process to go through for
> mounting single member of a raid pool?
mount -o degraded
--
Chris Murphy
next prev parent reply other threads:[~2017-01-18 21:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-18 21:07 Raid 1 recovery Jon
2017-01-18 21:30 ` Chris Murphy [this message]
2017-01-19 7:15 ` Duncan
2017-01-19 10:46 ` Andrei Borzenkov
2017-01-19 19:18 ` Chris Murphy
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