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Support adding a spare to a live md array with external metadata.

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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>
This commit is contained in:
Neil Brown
2008-06-28 08:31:31 +10:00
parent 8ed0a5216a
commit 6c2fce2ef6
5 changed files with 67 additions and 9 deletions
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7
drivers/md/multipath.c
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@@ -284,10 +284,15 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
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);