Re: btrfs question

[Casey Boone <caseyboone@gmail.com>]

I personally would stick with ext4 or migrate to xfs.  Btrfs is not a filesystem i would use right now for any data i considered important enough to live on a raid 5.

To answer your question, yes, use single as you have a raid device.  That option is if you want to use btrfs's raid functionality, which you can't as your raid is a single device from btrfs's point of view.  Btrfs is inheriting from zfs's feature set in this regard.

On Feb 23, 2013 9:07 PM, "Robert G. (Doc) Savage" <dsavage@peaknet.net> wrote:

The man page for mkfs.btrfs says:

       -m, --metadata profile
              Specify  how  metadata must be spanned across the devices speci-
              fied. Valid values are raid0, raid1, raid10 or single.

I'm not quite sure how literally to read this. I have a software RAID5
array /dev/md127p1 that I'm trying to decide whether or not to reformat
from ext4 to btrfs. Since the RAID5 array already exists, would I just
include "-m single" in the command line?

--Doc Savage
  Fairview Heights, IL


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