tree 7e8801049e7b6de1ccdc6e280402ee666d74400b
parent 253f9fd41afe2492b85de779946b5882a00dcdc5
author Song Liu <songliubraving@fb.com> 1441346435 -0700
committer NeilBrown <neilb@suse.com> 1446346107 +1100

skip match_mddev_units check for special roles

match_mddev_units is used to check whether 2 RAID arrays share
same disk(s). Arrays that share disk(s) will not do resync at the
same time for better performance (fewer HDD seek). However, this
check should not apply to Spare, Faulty, and Journal disks, as
they do not paticipate in resync.

In this patch, match_mddev_units skips check for disks with flag
"Faulty" or "Journal" or raid_disk < 0.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>