Re: Removing bad hdd from btrfs volume

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On 7 August 2015 at 00:17, Peter Foley <pefoley2@xxxxxxxxxxx> wrote:
> Hi,
>
> I have an btrfs volume that spans multiple disks (no raid, just
> single), and earlier this morning I hit some hardware problems with
> one of the disks.
> I tried btrfs dev del /dev/sda1 /, but btrfs was unable to migrate the
> 1gb that appears to be causing the read errors.
> See http://sprunge.us/aeZC

You might want to try to save as much as possible from the failing
disk with the help of GNU ddrescue. Either by copying sda to a
replacement disk or by copying sda1 to a file for loopback mounting.

Unmount filesystem before copying and remove sda before you mount with the copy.
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