From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tomasz Chmielewski <mangoo@wpkg.org>
Subject: Re: replacing failed disks in RAID-1 (kernel BUG)?
Date: Tue, 14 Jul 2009 19:29:04 +0200
Message-ID: <4A5CC060.2070308@wpkg.org>
References: <4A5B0C39.5030905@wpkg.org> <20090714172702.GI3783@think>
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To: Chris Mason <chris.mason@oracle.com>,
	Tomasz Chmielewski <mangoo@wpkg.org>,
	linux-btrfs@vger.kernel.org
Return-path: <linux-btrfs-owner@vger.kernel.org>
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Chris Mason wrote:
> On Mon, Jul 13, 2009 at 12:28:09PM +0200, Tomasz Chmielewski wrote:
>> How do I replace failed disks in RAID-1 mode?
>>
>> I followed the http://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices, but it triggered a kernel BUG (using 2.6.30.1 kernel):
>>
>>
>> # mount -o degraded /dev/sdb4 /mnt/btrfs/
>>
>> # btrfs-vol -r missing /mnt/btrfs/
>> removing missing devices from /mnt/btrfs/
>> ioctl returns -1
>>
>> # dmesg -c
>> btrfs: unable to go below two devices on raid1
>>
>> # btrfs-vol -a /dev/sda4 /mnt/btrfs/
>> Speicherzugriffsfehler
> 
> So, this should have worked.  I'll dig into why the btrfs-vol -a failed.

Mind that I was using 2.6.30.1 kernel, so the code was not very fresh.


-- 
Tomasz Chmielewski
http://wpkg.org