Do not run device delete, the issue is with parity and disk-failure recovery, manually incurring disk failure is a very bad idea. I would suggest running a full backup of all the files before touching anything and then an in place conversion should be fine as its just reading from undegraded disks and writing in a few format. I did the same thing converting from 5 to 1 several months ago. I did end up with a couple of files I had to pull from backups as they where marked as corrupted and unrecoverable. On Sat, Aug 6, 2016 at 2:58 AM, Karl Herler <karl.herler@xxxxxxxxx> wrote: > Hello, > > What is the safest way to migrate an existing raid 5/6 setup, to say raid 10? > > Will simply running `btrfs filesystem balance start -dconvert=10 > -mconvert=10` work or is it sensitive to the parity calculation issue? > > Can I `btrfs device delete` some of the drives, format them and copy > over the data from the raid 5/6, or will delete risk running into the > issue? > > > Best regards, > Karl Herler > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
