Add support for --replace and --with

--replace can be used to replace a device without completely failing
it.  Once the replacement completes the device will be failed.
--with can indicate which of several spares to use.

Signed-off-by: NeilBrown <neilb@suse.de>
  

1 files changed, 3 insertions, 1 deletions

diff --git a/mdadm.h b/mdadm.h
index ac051178..f1352e37 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -312,6 +312,8 @@ enum special_options {
 	Add,
 	Remove,
 	Fail,
+	Replace,
+	With,
 	MiscOpt,
 	WaitOpt,
 	ConfigFile,
@@ -432,7 +434,7 @@ struct mddev_dev {
 				 * Not set for names read from .config
 				 */
 	char writemostly;	/* 1 for 'set writemostly', 2 for 'clear writemostly' */
-	char used;		/* set when used */
+	int used;		/* set when used */
 	long long data_offset;
 	struct mddev_dev *next;
 };