Btrfs devel - May 2011 - Converting 1-drive ext4 to 4-drive raid10 btrfs

Hello!

I have a 1 TB ext4 drive that''s quite full (~50 GB free space, though I
could free up another 100 GB or so if necessary) and two empty 0.5 TB
drives.

Is it possible to get another 1 TB drive and combine the four drives to
a btrfs raid10 setup without (if all goes well) losing my data?

Regards,
Paul
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On Thu, May 05, 2011 at 05:01:04PM -0400, Paul Schroeder
wrote:
> I have a 1 TB ext4 drive that''s quite full (~50 GB free space,
though I
> could free up another 100 GB or so if necessary) and two empty 0.5 TB
> drives.
> 
> Is it possible to get another 1 TB drive and combine the four drives to
> a btrfs raid10 setup without (if all goes well) losing my data?
   Not at the moment. You''d have to be able to change RAID levels for
your FS configuration, which isn''t implemented yet.

   It''s planned, but nobody''s got round to it yet.
(I''ll probably
start looking at it as my next btrfs patch, if nobody else gets there
first).

   Hugo.

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