On Wed, 07 Nov 2012 11:14:36 +0900, Tsutomu Itoh wrote:

(2012/11/07 1:38), Stefan Behrens wrote:

quoted

replace start [-Bfr] <path> <srcdev>|<devid> <targetdev>

I think that
 "btrfs replace start [-Bfr] <srcdev>|<devid> <targetdev> <path>"
of the same synopsis as other subcommands is better.

You are right. 'btrfs device add' and 'btrfs device delete' have the
path at the end and the device in front, and there is no good reason to
not make it look equally. I will change it accordingly and post a V2 of
the Btrfs-progs patch within the next few days.

Thanks!