[Bug 1234359] [NEW] RAID5 + ext4 on SSD crashes during mkfs.ext4

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Ubuntu 12.04.3

Kernel
3.8.0-31-generic #46~precise1-Ubuntu SMP


I have 3 SSD : Crucial M500 960GB, and I am trying to create mdadm RAID5 + ext4 fs on this.

mdadm:

mdadm --create /dev/md5 --level=5 --raid-devices=3 /dev/sdd /dev/sde
/dev/sdg

next
mkfs.ext4 /dev/md5 
and there system crashes :


Oct  2 12:06:10 cisco1 kernel: [  214.583650] Process md5_raid5 (pid: 2190, threadinfo ffff885b5c540000, task ffff882b79e0ae80)
Oct  2 12:06:10 cisco1 kernel: [  214.604457] Stack:
Oct  2 12:06:10 cisco1 kernel: [  214.615179]  ffff885b63384900 ffff885b628348d0 ffff885b5c541b08 ffffffff814af18d
Oct  2 12:06:10 cisco1 kernel: [  214.635227]  ffff885b628348d0 ffff885b628348d0 ffff882b767aa000 ffff885b628348d0
Oct  2 12:06:10 cisco1 kernel: [  214.655206]  ffff885b63384900 ffff882b767aa000 ffff885b62c70000 000000000007f000
Oct  2 12:06:10 cisco1 kernel: [  214.675234] Call Trace:
Oct  2 12:06:10 cisco1 kernel: [  214.684923]  [<ffffffff814af18d>] scsi_init_io+0x3d/0x150
Oct  2 12:06:10 cisco1 kernel: [  214.694646]  [<ffffffff814af452>] scsi_setup_blk_pc_cmnd.part.33+0x42/0xe0
Oct  2 12:06:10 cisco1 kernel: [  214.704457]  [<ffffffff814af51f>] scsi_setup_blk_pc_cmnd+0x2f/0x40
Oct  2 12:06:10 cisco1 kernel: [  214.714951]  [<ffffffff814c041f>] sd_setup_discard_cmnd+0x13f/0x250
Oct  2 12:06:10 cisco1 kernel: [  214.724654]  [<ffffffff814c05c8>] sd_prep_fn+0x98/0xb00
Oct  2 12:06:10 cisco1 kernel: [  214.733974]  [<ffffffff8134a175>] ? deadline_remove_request.isra.3+0x55/0x90
Oct  2 12:06:10 cisco1 kernel: [  214.743236]  [<ffffffffa0256c60>] ? ops_run_io+0x2d0/0x6e0 [raid456]
Oct  2 12:06:10 cisco1 kernel: [  214.752226]  [<ffffffff813322fa>] blk_peek_request+0xba/0x220
Oct  2 12:06:10 cisco1 kernel: [  214.761226]  [<ffffffff814af5df>] scsi_request_fn+0x4f/0x450
Oct  2 12:06:10 cisco1 kernel: [  214.769925]  [<ffffffff8132b757>] __blk_run_queue+0x37/0x50
Oct  2 12:06:10 cisco1 kernel: [  214.778795]  [<ffffffff8132de31>] queue_unplugged+0x41/0xd0
Oct  2 12:06:10 cisco1 kernel: [  214.787494]  [<ffffffff8133278d>] blk_flush_plug_list+0x12d/0x220
Oct  2 12:06:10 cisco1 kernel: [  214.796371]  [<ffffffff81332898>] blk_finish_plug+0x18/0x50
Oct  2 12:06:10 cisco1 kernel: [  214.805061]  [<ffffffffa025b3a7>] raid5d+0x1f7/0x210 [raid456]
Oct  2 12:06:10 cisco1 kernel: [  214.813972]  [<ffffffff81568bdd>] md_thread+0x11d/0x170
Oct  2 12:06:10 cisco1 kernel: [  214.822322]  [<ffffffff8107fd90>] ? add_wait_queue+0x60/0x60
Oct  2 12:06:10 cisco1 kernel: [  214.830519]  [<ffffffff81568ac0>] ? md_rdev_init+0x140/0x140
Oct  2 12:06:10 cisco1 kernel: [  214.838592]  [<ffffffff8107f1d0>] kthread+0xc0/0xd0
Oct  2 12:06:10 cisco1 kernel: [  214.846706]  [<ffffffff8107f110>] ? flush_kthread_worker+0xb0/0xb0
Oct  2 12:06:10 cisco1 kernel: [  214.854954]  [<ffffffff816fcb2c>] ret_from_fork+0x7c/0xb0
Oct  2 12:06:10 cisco1 kernel: [  214.863080]  [<ffffffff8107f110>] ? flush_kthread_worker+0xb0/0xb0
Oct  2 12:06:10 cisco1 kernel: [  214.870943] Code: 24 38 4c 89 e6 48 8b 13 e8 5f 7d e8 ff 3b 43 08 77 19 89 43 08 41 8b 44 24 54 89 43 10 31 c0 5b 41 5c 5d c3 b8 02 00 00 00 eb f4 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66
Oct  2 12:06:10 cisco1 kernel: [  214.895823] RIP  [<ffffffff814af13f>] scsi_init_sgtable+0x5f/0x70
Oct  2 12:06:10 cisco1 kernel: [  214.903879]  RSP <ffff885b5c541aa8>
Oct  2 12:06:10 cisco1 kernel: [  214.911791] ---[ end trace 783387391a8e7729 ]---
Oct  2 12:06:42 cisco1 kernel: [  241.599296] ------------[ cut here ]------------

** Affects: mdadm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
RAID5 + ext4 on SSD crashes during mkfs.ext4
https://bugs.launchpad.net/bugs/1234359
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