There have been two commits that have broken DM RAID: 1) 773ca82 (v3.12-rc1) raid5: make release_stripe lockless 2) 566c09c raid5: relieve lock contention in get_active_stripe() I've provided a patch for the first, but I don't have a patch ready for the second yet. Since 3.12 is alreay out, I figured I better send the patch for the first problem now. Simply creating a RAID 4/5/6 device via device-mapper (or LVM) is sufficent to cause the hang to manifest. Jonathan Brassow (1): MD/DM RAID: Fix hang due to recent RAID5 locking changes drivers/md/dm-raid.c | 1 - drivers/md/md.c | 5 ++++- 2 files changed, 4 insertions(+), 2 deletions(-) -- 1.7.7.6 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
