Btrfs-progs: add support for device replace procedure

This is the user mode part of the device replace patch series.

The command group "btrfs replace" is added with three commands:
- btrfs replace start srcdev|srcdevid targetdev [-Bfr] mount_point
- btrfs replace status mount_point [-1]
- btrfs replace cancel mount_point

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/commands.h b/commands.h
index 8114a73..61d74d7 100644
--- a/commands.h
+++ b/commands.h
@@ -89,6 +89,7 @@ extern const struct cmd_group send_cmd_group;
 extern const struct cmd_group receive_cmd_group;
 extern const struct cmd_group quota_cmd_group;
 extern const struct cmd_group qgroup_cmd_group;
+extern const struct cmd_group replace_cmd_group;
 
 int cmd_subvolume(int argc, char **argv);
 int cmd_filesystem(int argc, char **argv);
@@ -100,6 +101,7 @@ int cmd_send(int argc, char **argv);
 int cmd_receive(int argc, char **argv);
 int cmd_quota(int argc, char **argv);
 int cmd_qgroup(int argc, char **argv);
+int cmd_replace(int argc, char **argv);
 
 /* subvolume exported functions */
 int test_issubvolume(char *path);