Support adding a spare to a live md array with external metadata.
i.e. extend the 'md/dev-XXX/slot' attribute so that you can
tell a device to fill an vacant slot in an and md array.
Signed-off-by: Neil Brown <neilb@suse.de>
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index e968116..4a1d714 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -284,10 +284,15 @@
int found = 0;
int path;
struct multipath_info *p;
+ int first = 0;
+ int last = mddev->raid_disks - 1;
+
+ if (rdev->raid_disk >= 0)
+ first = last = rdev->raid_disk;
print_multipath_conf(conf);
- for (path=0; path<mddev->raid_disks; path++)
+ for (path = first; path <= last; path++)
if ((p=conf->multipaths+path)->rdev == NULL) {
q = rdev->bdev->bd_disk->queue;
blk_queue_stack_limits(mddev->queue, q);