Re: Copying a disk containing a btrfs filesystem

[Michael Schuerig <michael.lists@schuerig.de>]

On Friday 11 April 2014 12:39:31 Brendan Hide wrote:
> If you're 100% happy with your old disk's *content*/layout/etc (just
> not  happy with the disk's reliability), try an
> overnight/over-weekend ddrescue instead

Thanks again to everyone who replied and especially for suggesting 
ddrescue. In the meantime, I've got a suitable new disk and copied the 
data to it using ddrescue (it took about 12 hours for 1TB). The disk had 
one fault extending over a few successive sectors.

For some reason, I had to repair the first partition, which I use for 
swap. The large second with btrfs on it seems fine. I ran btrfs scrub on 
it and it found one error:

Apr 16 09:48:27 fuchsia kernel: [ 6792.829186] btrfs: checksum error at 
logical 74443923456 on dev /dev/sdb2, sector 145398288, root 1228, inode 
59102093, offset 929792, length 4096, links 1 (path: 
usr/lib/debug/.build-id/8f/b82df57b7b6fff7033f6abd7de914b82f98160.debug)

That file is part of a "historical" snapshot which I have deleted by now 
and thus presumably dealt with the problem.

Michael

-- 
Michael Schuerig
mailto:michael@schuerig.de
http://www.schuerig.de/michael/