Hi Neil and all, I saw below NULL Pointer dereference in rdev_set_badblocks once: when this happened, both devices in raid1 almost failed at same time, a lot of io errors, after several minutes, super_written error and disable on device and then run into NULL pointer dereference. Could you comment on this? cat badblock_null.log Sep 3 14:31:19 pserver102 kernel: [534312.102156] Modules linked in: bridge stp llc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_t ables raid1 md_mod dm_round_robin sd_mod crc_t10dif ib_srp scsi_transport_srp scsi_tgt xt_ETHOIP6(O) x_tables vhost_net(O) macvtap macvlan tun(O) nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 rdma_ucm rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad ib_qib mlx4_ib i b_mthca ib_mad ib_core dm_multipath scsi_dh kvm_amd kvm sg powernow_k8 mperf crc32c_intel microcode tpm_tis tpm tpm_bios psmouse serio_raw evdev usb_storage scsi_mod amd64_edac_mod edac_core edac_mce_amd i2c_piix4 button processor thermal_sys mlx4_core Sep 3 14:31:19 pserver102 kernel: [534312.103339] Sep 3 14:31:19 pserver102 kernel: [534312.103432] Pid: 46599, comm: md2_raid1 Tainted: G O 3.4.51-4-pserver #1 Supermicro H8QG6/ H8QG6 Sep 3 14:31:19 pserver102 kernel: [534312.103658] RIP: 0010:[<ffffffffa02b3978>] [<ffffffffa02b3978>] rdev_set_badblocks+0x8/0x70 [md_mod ] Sep 3 14:31:19 pserver102 kernel: [534312.103870] RSP: 0018:ffff881fbc197c10 EFLAGS: 00010282 Sep 3 14:31:19 pserver102 kernel: [534312.103976] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104171] RDX: 0000000000000008 RSI: 00000000001ad300 RDI: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104358] RBP: ffff881803fa55c0 R08: ffffea0100092418 R09: 0000000000000001 Sep 3 14:31:19 pserver102 kernel: [534312.104550] R10: 0000000000000000 R11: dead000000100100 R12: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104762] R13: 00000000001ad300 R14: 0000000000000010 R15: 0000000000000008 Sep 3 14:31:19 pserver102 kernel: [534312.104960] FS: 00007f3722277700(0000) GS:ffff880807d00000(0000) knlGS:0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.105158] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 3 14:31:19 pserver102 kernel: [534312.105263] CR2: 0000000000000058 CR3: 0000002003c15000 CR4: 00000000000407e0 Sep 3 14:31:19 pserver102 kernel: [534312.105456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.105654] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 3 14:31:19 pserver102 kernel: [534312.105854] Process md2_raid1 (pid: 46599, threadinfo ffff881fbc196000, task ffff881fc44ccaf0) Sep 3 14:31:19 pserver102 kernel: [534312.106050] Stack: Sep 3 14:31:19 pserver102 kernel: [534312.106148] 00000000001ad300 0000000000000001 ffff880800f11800 ffffffffa02c8df3 Sep 3 14:31:19 pserver102 kernel: [534312.106351] ffff881fe461ef90 ffff881f00000020 0000100000000009 ffff880800f11800 Sep 3 14:31:19 pserver102 kernel: [534312.106558] ffff88180324e000 ffff88180324e000 ffff8818ffffffff ffff883ffa7c5b50 Sep 3 14:31:19 pserver102 kernel: [534312.106774] Call Trace: Sep 3 14:31:19 pserver102 kernel: [534312.106876] [<ffffffffa02c8df3>] ? md_raid1_congested+0x1ab3/0x5560 [raid1] Sep 3 14:31:19 pserver102 kernel: [534312.106989] [<ffffffff813814af>] ? generic_make_request+0xaf/0xe0 Sep 3 14:31:19 pserver102 kernel: [534312.107101] [<ffffffffa02c943c>] ? md_raid1_congested+0x20fc/0x5560 [raid1] Sep 3 14:31:19 pserver102 kernel: [534312.107213] [<ffffffff8167686b>] ? __schedule+0x2eb/0x750 Sep 3 14:31:19 pserver102 kernel: [534312.107320] [<ffffffff81046e23>] ? lock_timer_base+0x33/0x70 Sep 3 14:31:19 pserver102 kernel: [534312.107429] [<ffffffff810478bc>] ? try_to_del_timer_sync+0x7c/0xd0 Sep 3 14:31:19 pserver102 kernel: [534312.107538] [<ffffffff81046e60>] ? lock_timer_base+0x70/0x70 Sep 3 14:31:19 pserver102 kernel: [534312.107652] [<ffffffffa02b17ff>] ? md_rdev_init+0x23f/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.107765] [<ffffffff81059db0>] ? wake_up_bit+0x40/0x40 Sep 3 14:31:19 pserver102 kernel: [534312.107876] [<ffffffffa02b16e0>] ? md_rdev_init+0x120/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.107986] [<ffffffffa02b16e0>] ? md_rdev_init+0x120/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.108096] [<ffffffff8105988e>] ? kthread+0x9e/0xb0 Sep 3 14:31:19 pserver102 kernel: [534312.108203] [<ffffffff816804a4>] ? kernel_thread_helper+0x4/0x10 Sep 3 14:31:19 pserver102 kernel: [534312.108310] [<ffffffff810597f0>] ? kthread_freezable_should_stop+0x60/0x60 Sep 3 14:31:19 pserver102 kernel: [534312.108424] [<ffffffff816804a0>] ? gs_change+0x13/0x13 Sep 3 14:31:19 pserver102 kernel: [534312.108530] Code: 01 00 00 e8 5b 95 ff ff 48 8b 7b 18 48 89 de e8 bf 97 ff ff e9 88 fe ff ff 66 2e 0 f 1f 84 00 00 00 00 00 53 48 89 fb 48 83 ec 10 <48> 03 77 58 48 8d bf 30 01 00 00 e8 28 9d ff ff 85 c0 75 0c 48
Sep 3 14:30:58 pserver102 kernel: [534290.949370] sd 14:0:0:2: [sdbl] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:30:58 pserver102 kernel: [534290.949579] sd 14:0:0:2: [sdbl] Sense Key : Illegal Request [current] Sep 3 14:30:58 pserver102 kernel: [534290.949703] sd 14:0:0:2: [sdbl] Add. Sense: Logical unit not supported Sep 3 14:30:58 pserver102 kernel: [534290.949821] sd 14:0:0:2: [sdbl] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:30:58 pserver102 kernel: [534290.950008] end_request: I/O error, dev sdbl, sector 0 Sep 3 14:31:07 pserver102 kernel: [534299.935235] sd 1:0:0:2: [sdbe] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:07 pserver102 kernel: [534299.935463] sd 1:0:0:2: [sdbe] Sense Key : Illegal Request [current] Sep 3 14:31:07 pserver102 kernel: [534299.935585] sd 1:0:0:2: [sdbe] Add. Sense: Logical unit not supported Sep 3 14:31:07 pserver102 kernel: [534299.935714] sd 1:0:0:2: [sdbe] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:07 pserver102 kernel: [534299.935910] end_request: I/O error, dev sdbe, sector 0 Sep 3 14:31:07 pserver102 kernel: [534299.936158] sd 13:0:0:2: [sdbi] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:07 pserver102 kernel: [534299.936363] sd 13:0:0:2: [sdbi] Sense Key : Illegal Request [current] Sep 3 14:31:07 pserver102 kernel: [534299.936482] sd 13:0:0:2: [sdbi] Add. Sense: Logical unit not supported Sep 3 14:31:07 pserver102 kernel: [534299.936601] sd 13:0:0:2: [sdbi] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:07 pserver102 kernel: [534299.936788] end_request: I/O error, dev sdbi, sector 0 Sep 3 14:31:08 pserver102 kernel: [534300.935144] sd 2:0:0:2: [sdbf] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:08 pserver102 kernel: [534300.935356] sd 2:0:0:2: [sdbf] Sense Key : Illegal Request [current] Sep 3 14:31:08 pserver102 kernel: [534300.935485] sd 2:0:0:2: [sdbf] Add. Sense: Logical unit not supported Sep 3 14:31:08 pserver102 kernel: [534300.935610] sd 2:0:0:2: [sdbf] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:08 pserver102 kernel: [534300.935804] end_request: I/O error, dev sdbf, sector 0 Sep 3 14:31:08 pserver102 kernel: [534300.936059] sd 14:0:0:2: [sdbl] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:08 pserver102 kernel: [534300.936263] sd 14:0:0:2: [sdbl] Sense Key : Illegal Request [current] Sep 3 14:31:08 pserver102 kernel: [534300.936406] sd 14:0:0:2: [sdbl] Add. Sense: Logical unit not supported Sep 3 14:31:08 pserver102 kernel: [534300.936527] sd 14:0:0:2: [sdbl] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:08 pserver102 kernel: [534300.936723] end_request: I/O error, dev sdbl, sector 0 Sep 3 14:31:17 pserver102 kernel: [534309.922663] sd 1:0:0:2: [sdbe] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:17 pserver102 kernel: [534309.922879] sd 1:0:0:2: [sdbe] Sense Key : Illegal Request [current] Sep 3 14:31:17 pserver102 kernel: [534309.922999] sd 1:0:0:2: [sdbe] Add. Sense: Logical unit not supported Sep 3 14:31:17 pserver102 kernel: [534309.923118] sd 1:0:0:2: [sdbe] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:17 pserver102 kernel: [534309.925093] end_request: I/O error, dev sdbe, sector 0 Sep 3 14:31:17 pserver102 kernel: [534309.925357] sd 13:0:0:2: [sdbi] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:17 pserver102 kernel: [534309.925567] sd 13:0:0:2: [sdbi] Sense Key : Illegal Request [current] Sep 3 14:31:17 pserver102 kernel: [534309.925689] sd 13:0:0:2: [sdbi] Add. Sense: Logical unit not supported Sep 3 14:31:17 pserver102 kernel: [534309.925803] sd 13:0:0:2: [sdbi] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:17 pserver102 kernel: [534309.926010] end_request: I/O error, dev sdbi, sector 0 Sep 3 14:31:18 pserver102 kernel: [534310.924583] sd 2:0:0:2: [sdbf] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:18 pserver102 kernel: [534310.924792] sd 2:0:0:2: [sdbf] Sense Key : Illegal Request [current] Sep 3 14:31:18 pserver102 kernel: [534310.924914] sd 2:0:0:2: [sdbf] Add. Sense: Logical unit not supported Sep 3 14:31:18 pserver102 kernel: [534310.925040] sd 2:0:0:2: [sdbf] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:18 pserver102 kernel: [534310.925251] end_request: I/O error, dev sdbf, sector 0 Sep 3 14:31:18 pserver102 kernel: [534310.925488] sd 14:0:0:2: [sdbl] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:18 pserver102 kernel: [534310.925695] sd 14:0:0:2: [sdbl] Sense Key : Illegal Request [current] Sep 3 14:31:18 pserver102 kernel: [534310.925816] sd 14:0:0:2: [sdbl] Add. Sense: Logical unit not supported Sep 3 14:31:18 pserver102 kernel: [534310.925943] sd 14:0:0:2: [sdbl] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:18 pserver102 kernel: [534310.926135] end_request: I/O error, dev sdbl, sector 0 Sep 3 14:31:19 pserver102 kernel: [534311.924892] end_request: I/O error, dev dm-13, sector 16 Sep 3 14:31:19 pserver102 kernel: [534311.925015] end_request: I/O error, dev dm-13, sector 16 Sep 3 14:31:19 pserver102 kernel: [534311.925130] md: super_written gets error=-5, uptodate=0 Sep 3 14:31:19 pserver102 kernel: [534311.925247] md/raid1:md2: Disk failure on dm-13, disabling device. Sep 3 14:31:19 pserver102 kernel: [534311.925248] md/raid1:md2: Operation continuing on 1 devices. Sep 3 14:31:19 pserver102 kernel: [534311.925487] end_request: I/O error, dev dm-13, sector 1766144 Sep 3 14:31:19 pserver102 kernel: [534311.925597] md/raid1:md2: dm-13: rescheduling sector 1757952 Sep 3 14:31:19 pserver102 kernel: [534311.925710] end_request: I/O error, dev dm-13, sector 428328 Sep 3 14:31:19 pserver102 kernel: [534311.925831] md/raid1:md2: dm-13: rescheduling sector 420136 Sep 3 14:31:19 pserver102 kernel: [534311.925949] end_request: I/O error, dev dm-13, sector 434952 Sep 3 14:31:19 pserver102 kernel: [534311.926064] md/raid1:md2: dm-13: rescheduling sector 426760 Sep 3 14:31:19 pserver102 kernel: [534311.926178] end_request: I/O error, dev dm-14, sector 16 Sep 3 14:31:19 pserver102 kernel: [534311.926296] md: super_written gets error=-5, uptodate=0 Sep 3 14:31:19 pserver102 kernel: [534311.926458] md: super_written gets error=-5, uptodate=0 Sep 3 14:31:19 pserver102 kernel: [534311.926690] md: super_written gets error=-5, uptodate=0 Sep 3 14:31:19 pserver102 kernel: [534311.926923] RAID1 conf printout: Sep 3 14:31:19 pserver102 kernel: [534311.926929] --- wd:1 rd:2 Sep 3 14:31:19 pserver102 kernel: [534311.926935] disk 0, wo:0, o:1, dev:dm-14 Sep 3 14:31:19 pserver102 kernel: [534311.926939] disk 1, wo:1, o:0, dev:dm-13 Sep 3 14:31:19 pserver102 kernel: [534312.101337] RAID1 conf printout: Sep 3 14:31:19 pserver102 kernel: [534312.101343] --- wd:1 rd:2 Sep 3 14:31:19 pserver102 kernel: [534312.101348] disk 0, wo:0, o:1, dev:dm-14 Sep 3 14:31:19 pserver102 kernel: [534312.101393] md: super_written gets error=-5, uptodate=0 Sep 3 14:31:19 pserver102 kernel: [534312.101611] BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 Sep 3 14:31:19 pserver102 kernel: [534312.101813] IP: [<ffffffffa02b3978>] rdev_set_badblocks+0x8/0x70 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.101937] PGD 0 Sep 3 14:31:19 pserver102 kernel: [534312.102037] Oops: 0000 [#1] SMP Sep 3 14:31:19 pserver102 kernel: [534312.102149] CPU 4 Sep 3 14:31:19 pserver102 kernel: [534312.102156] Modules linked in: bridge stp llc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables raid1 md_mod dm_round_robin sd_mod crc_t10dif ib_srp scsi_transport_srp scsi_tgt xt_ETHOIP6(O) x_tables vhost_net(O) macvtap macvlan tun(O) nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 rdma_ucm rdma_cm iw_cm ib_addr ib_ipoib ib_cm ib_sa ib_uverbs ib_umad ib_qib mlx4_ib ib_mthca ib_mad ib_core dm_multipath scsi_dh kvm_amd kvm sg powernow_k8 mperf crc32c_intel microcode tpm_tis tpm tpm_bios psmouse serio_raw evdev usb_storage scsi_mod amd64_edac_mod edac_core edac_mce_amd i2c_piix4 button processor thermal_sys mlx4_core Sep 3 14:31:19 pserver102 kernel: [534312.103339] Sep 3 14:31:19 pserver102 kernel: [534312.103432] Pid: 46599, comm: md2_raid1 Tainted: G O 3.4.51-4-pserver #1 Supermicro H8QG6/H8QG6 Sep 3 14:31:19 pserver102 kernel: [534312.103658] RIP: 0010:[<ffffffffa02b3978>] [<ffffffffa02b3978>] rdev_set_badblocks+0x8/0x70 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.103870] RSP: 0018:ffff881fbc197c10 EFLAGS: 00010282 Sep 3 14:31:19 pserver102 kernel: [534312.103976] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104171] RDX: 0000000000000008 RSI: 00000000001ad300 RDI: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104358] RBP: ffff881803fa55c0 R08: ffffea0100092418 R09: 0000000000000001 Sep 3 14:31:19 pserver102 kernel: [534312.104550] R10: 0000000000000000 R11: dead000000100100 R12: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.104762] R13: 00000000001ad300 R14: 0000000000000010 R15: 0000000000000008 Sep 3 14:31:19 pserver102 kernel: [534312.104960] FS: 00007f3722277700(0000) GS:ffff880807d00000(0000) knlGS:0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.105158] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Sep 3 14:31:19 pserver102 kernel: [534312.105263] CR2: 0000000000000058 CR3: 0000002003c15000 CR4: 00000000000407e0 Sep 3 14:31:19 pserver102 kernel: [534312.105456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Sep 3 14:31:19 pserver102 kernel: [534312.105654] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Sep 3 14:31:19 pserver102 kernel: [534312.105854] Process md2_raid1 (pid: 46599, threadinfo ffff881fbc196000, task ffff881fc44ccaf0) Sep 3 14:31:19 pserver102 kernel: [534312.106050] Stack: Sep 3 14:31:19 pserver102 kernel: [534312.106148] 00000000001ad300 0000000000000001 ffff880800f11800 ffffffffa02c8df3 Sep 3 14:31:19 pserver102 kernel: [534312.106351] ffff881fe461ef90 ffff881f00000020 0000100000000009 ffff880800f11800 Sep 3 14:31:19 pserver102 kernel: [534312.106558] ffff88180324e000 ffff88180324e000 ffff8818ffffffff ffff883ffa7c5b50 Sep 3 14:31:19 pserver102 kernel: [534312.106774] Call Trace: Sep 3 14:31:19 pserver102 kernel: [534312.106876] [<ffffffffa02c8df3>] ? md_raid1_congested+0x1ab3/0x5560 [raid1] Sep 3 14:31:19 pserver102 kernel: [534312.106989] [<ffffffff813814af>] ? generic_make_request+0xaf/0xe0 Sep 3 14:31:19 pserver102 kernel: [534312.107101] [<ffffffffa02c943c>] ? md_raid1_congested+0x20fc/0x5560 [raid1] Sep 3 14:31:19 pserver102 kernel: [534312.107213] [<ffffffff8167686b>] ? __schedule+0x2eb/0x750 Sep 3 14:31:19 pserver102 kernel: [534312.107320] [<ffffffff81046e23>] ? lock_timer_base+0x33/0x70 Sep 3 14:31:19 pserver102 kernel: [534312.107429] [<ffffffff810478bc>] ? try_to_del_timer_sync+0x7c/0xd0 Sep 3 14:31:19 pserver102 kernel: [534312.107538] [<ffffffff81046e60>] ? lock_timer_base+0x70/0x70 Sep 3 14:31:19 pserver102 kernel: [534312.107652] [<ffffffffa02b17ff>] ? md_rdev_init+0x23f/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.107765] [<ffffffff81059db0>] ? wake_up_bit+0x40/0x40 Sep 3 14:31:19 pserver102 kernel: [534312.107876] [<ffffffffa02b16e0>] ? md_rdev_init+0x120/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.107986] [<ffffffffa02b16e0>] ? md_rdev_init+0x120/0x290 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.108096] [<ffffffff8105988e>] ? kthread+0x9e/0xb0 Sep 3 14:31:19 pserver102 kernel: [534312.108203] [<ffffffff816804a4>] ? kernel_thread_helper+0x4/0x10 Sep 3 14:31:19 pserver102 kernel: [534312.108310] [<ffffffff810597f0>] ? kthread_freezable_should_stop+0x60/0x60 Sep 3 14:31:19 pserver102 kernel: [534312.108424] [<ffffffff816804a0>] ? gs_change+0x13/0x13 Sep 3 14:31:19 pserver102 kernel: [534312.108530] Code: 01 00 00 e8 5b 95 ff ff 48 8b 7b 18 48 89 de e8 bf 97 ff ff e9 88 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb 48 83 ec 10 <48> 03 77 58 48 8d bf 30 01 00 00 e8 28 9d ff ff 85 c0 75 0c 48 Sep 3 14:31:19 pserver102 kernel: [534312.109159] RIP [<ffffffffa02b3978>] rdev_set_badblocks+0x8/0x70 [md_mod] Sep 3 14:31:19 pserver102 kernel: [534312.109270] RSP <ffff881fbc197c10> Sep 3 14:31:19 pserver102 kernel: [534312.109368] CR2: 0000000000000058 Sep 3 14:31:19 pserver102 kernel: [534312.109865] ---[ end trace b195a0cfb8232033 ]--- Sep 3 14:31:27 pserver102 kernel: [534319.926023] sd 1:0:0:2: [sdbe] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:27 pserver102 kernel: [534319.926385] sd 1:0:0:2: [sdbe] Sense Key : Illegal Request [current] Sep 3 14:31:27 pserver102 kernel: [534319.926738] sd 1:0:0:2: [sdbe] Add. Sense: Logical unit not supported Sep 3 14:31:27 pserver102 kernel: [534319.927032] sd 1:0:0:2: [sdbe] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:27 pserver102 kernel: [534319.928016] blk_update_request: 15 callbacks suppressed Sep 3 14:31:27 pserver102 kernel: [534319.928187] end_request: I/O error, dev sdbe, sector 0 Sep 3 14:31:27 pserver102 kernel: [534319.928498] sd 13:0:0:2: [sdbi] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:27 pserver102 kernel: [534319.928814] sd 13:0:0:2: [sdbi] Sense Key : Illegal Request [current] Sep 3 14:31:27 pserver102 kernel: [534319.929186] sd 13:0:0:2: [sdbi] Add. Sense: Logical unit not supported Sep 3 14:31:27 pserver102 kernel: [534319.929494] sd 13:0:0:2: [sdbi] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:27 pserver102 kernel: [534319.930502] end_request: I/O error, dev sdbi, sector 0 Sep 3 14:31:28 pserver102 kernel: [534320.929556] sd 2:0:0:2: [sdbf] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:28 pserver102 kernel: [534320.929887] sd 2:0:0:2: [sdbf] Sense Key : Illegal Request [current] Sep 3 14:31:28 pserver102 kernel: [534320.930245] sd 2:0:0:2: [sdbf] Add. Sense: Logical unit not supported Sep 3 14:31:28 pserver102 kernel: [534320.930536] sd 2:0:0:2: [sdbf] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:28 pserver102 kernel: [534320.931540] end_request: I/O error, dev sdbf, sector 0 Sep 3 14:31:28 pserver102 kernel: [534320.931848] sd 14:0:0:2: [sdbl] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:28 pserver102 kernel: [534320.932165] sd 14:0:0:2: [sdbl] Sense Key : Illegal Request [current] Sep 3 14:31:28 pserver102 kernel: [534320.932526] sd 14:0:0:2: [sdbl] Add. Sense: Logical unit not supported Sep 3 14:31:28 pserver102 kernel: [534320.932828] sd 14:0:0:2: [sdbl] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 Sep 3 14:31:28 pserver102 kernel: [534320.933825] end_request: I/O error, dev sdbl, sector 0 Sep 3 14:31:37 pserver102 kernel: [534329.928044] sd 1:0:0:2: [sdbe] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE Sep 3 14:31:37 pserver102 kernel: [534329.928376] sd 1:0:0:2: [sdbe] Sense Key : Illegal Request [current] Sep 3 14:31:37 pserver102 kernel: [534329.928731] sd 1:0:0:2: [sdbe] Add. Sense: Logical unit not supported