G'day,
On a LSI 9211-8i controller with IT firmware, when I use mdadm
to create a 4-disk raid10 and mount it, the controller reports
errors on all 4 disks, then the disks go read-only (kern.log
below).
A raid6 using the same sets of disks works without any problems.
Has anyone had any success or similar failures with similar
hardware, and/or have any idea what might be going on?
The command sequence used is:
mdadm --create /dev/md4 --raid-devices=4 --level=raid10 --layout=o2 --bitmap=internal /dev/sd{f,j,k,m}
mkfs.ext4 /dev/md4
mount -onoatime /dev/md4 /mnt
(Note: the mkfs and mount are done immediately after the mdadm
returns, i.e. the raid has only just started syncing.)
This happens with linux-3.7.3, and 3.7.10, and LSI firmware
versions 14 and 15, and with 4 x WD20EFRX (the original config),
and 2 x ST2000DL003 + 2 x WD20EADS disks (a test config).
Cheers,
Chris
----------------------------------------------------------------------
kern.log
----------------------------------------------------------------------
Apr 8 15:08:13 b4 kernel: [ 409.230164] md/raid10:md4: not clean -- starting background reconstruction
Apr 8 15:08:13 b4 kernel: [ 409.230227] md/raid10:md4: active with 4 out of 4 devices
Apr 8 15:08:13 b4 kernel: [ 409.230442] created bitmap (30 pages) for device md4
Apr 8 15:08:13 b4 kernel: [ 409.233333] md4: bitmap initialized from disk: read 2 pages, set 59613 of 59613 bits
Apr 8 15:08:14 b4 kernel: [ 409.303719] md4: detected capacity change from 0 to 4000525058048
Apr 8 15:08:14 b4 kernel: [ 409.326603] md4: unknown partition table
Apr 8 15:08:20 b4 kernel: [ 415.821209] md: resync of RAID array md4
Apr 8 15:08:20 b4 kernel: [ 415.821271] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
Apr 8 15:08:20 b4 kernel: [ 415.821333] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync.
Apr 8 15:08:20 b4 kernel: [ 415.821415] md: using 128k window, over a total of 3906762752k.
Apr 8 15:08:33 b4 kernel: [ 428.762213] EXT4-fs (md4): mounted filesystem with ordered data mode. Opts: (null)
Apr 8 15:08:41 b4 kernel: [ 436.345890] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.345977] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346062] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346138] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346215] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346291] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346367] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346443] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346519] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:41 b4 kernel: [ 436.346595] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594032] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594119] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594202] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594278] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594355] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:42 b4 kernel: [ 437.594431] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842232] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842319] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842402] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842479] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842555] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:43 b4 kernel: [ 438.842631] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090321] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090408] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090491] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090567] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090644] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:44 b4 kernel: [ 440.090720] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338473] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338560] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338644] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338721] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338797] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:46 b4 kernel: [ 441.338873] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.586623] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.586707] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.586717] sd 0:0:5:0: [sdf] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.586719] sd 0:0:5:0: [sdf]
Apr 8 15:08:47 b4 kernel: [ 442.586720] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.586722] sd 0:0:5:0: [sdf] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.586728] Write(10): 2a 00 00 04 1c 00 00 04 00 00
Apr 8 15:08:47 b4 kernel: [ 442.586730] end_request: I/O error, dev sdf, sector 269312
Apr 8 15:08:47 b4 kernel: [ 442.587114] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.587192] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.587268] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.587344] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.587355] sd 0:0:9:0: [sdj] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.587356] sd 0:0:9:0: [sdj]
Apr 8 15:08:47 b4 kernel: [ 442.587357] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.587359] sd 0:0:9:0: [sdj] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.587364] Write(10): 2a 00 00 04 1c 00 00 04 00 00
Apr 8 15:08:47 b4 kernel: [ 442.587366] end_request: I/O error, dev sdj, sector 269312
Apr 8 15:08:47 b4 kernel: [ 442.588919] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.588996] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.589006] sd 0:0:10:0: [sdk] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.589008] sd 0:0:10:0: [sdk]
Apr 8 15:08:47 b4 kernel: [ 442.589009] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.589011] sd 0:0:10:0: [sdk] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.589016] Write(10): 2a 00 00 04 1d 10 00 02 f0 00
Apr 8 15:08:47 b4 kernel: [ 442.589018] end_request: I/O error, dev sdk, sector 269584
Apr 8 15:08:47 b4 kernel: [ 442.589396] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.589468] sd 0:0:10:0: [sdk] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.589471] sd 0:0:10:0: [sdk]
Apr 8 15:08:47 b4 kernel: [ 442.589473] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.589475] sd 0:0:10:0: [sdk] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.589480] Write(10): 2a 00 00 04 18 00 00 04 00 00
Apr 8 15:08:47 b4 kernel: [ 442.589482] end_request: I/O error, dev sdk, sector 268288
Apr 8 15:08:47 b4 kernel: [ 442.589560] md/raid10:md4: Disk failure on sdk1, disabling device.
Apr 8 15:08:47 b4 kernel: [ 442.589565] md/raid10:md4: Disk failure on sdj1, disabling device.
Apr 8 15:08:47 b4 kernel: [ 442.589565] md/raid10:md4: Operation continuing on 2 devices.
Apr 8 15:08:47 b4 kernel: [ 442.589959] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.590036] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.590046] sd 0:0:12:0: [sdm] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.590048] sd 0:0:12:0: [sdm]
Apr 8 15:08:47 b4 kernel: [ 442.590049] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.590050] sd 0:0:12:0: [sdm] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.590055] Write(10): 2a 00 00 04 19 10 00 02 f0 00
Apr 8 15:08:47 b4 kernel: [ 442.590057] end_request: I/O error, dev sdm, sector 268560
Apr 8 15:08:47 b4 kernel: [ 442.590437] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.590513] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:47 b4 kernel: [ 442.590552] sd 0:0:12:0: [sdm] Unhandled error code
Apr 8 15:08:47 b4 kernel: [ 442.590554] sd 0:0:12:0: [sdm]
Apr 8 15:08:47 b4 kernel: [ 442.590555] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:47 b4 kernel: [ 442.590556] sd 0:0:12:0: [sdm] CDB:
Apr 8 15:08:47 b4 kernel: [ 442.590561] Write(10): 2a 00 00 04 1c 00 00 04 00 00
Apr 8 15:08:47 b4 kernel: [ 442.590562] end_request: I/O error, dev sdm, sector 269312
Apr 8 15:08:47 b4 kernel: [ 442.590913] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:48 b4 kernel: [ 443.834819] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:48 b4 kernel: [ 443.834907] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:48 b4 kernel: [ 443.834989] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:48 b4 kernel: [ 443.835065] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:48 b4 kernel: [ 443.835141] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:49 b4 kernel: [ 445.082918] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:49 b4 kernel: [ 445.083006] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:49 b4 kernel: [ 445.083089] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:49 b4 kernel: [ 445.083165] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:49 b4 kernel: [ 445.083241] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:51 b4 kernel: [ 446.331061] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:51 b4 kernel: [ 446.331149] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:51 b4 kernel: [ 446.331232] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:51 b4 kernel: [ 446.331309] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:52 b4 kernel: [ 447.579212] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:52 b4 kernel: [ 447.579281] sd 0:0:5:0: [sdf] Unhandled error code
Apr 8 15:08:52 b4 kernel: [ 447.579282] sd 0:0:5:0: [sdf]
Apr 8 15:08:52 b4 kernel: [ 447.579284] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:52 b4 kernel: [ 447.579285] sd 0:0:5:0: [sdf] CDB:
Apr 8 15:08:52 b4 kernel: [ 447.579290] Write(10): 2a 00 00 04 18 00 00 04 00 00
Apr 8 15:08:52 b4 kernel: [ 447.579292] end_request: I/O error, dev sdf, sector 268288
Apr 8 15:08:52 b4 kernel: [ 447.579628] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:52 b4 kernel: [ 447.579700] sd 0:0:9:0: [sdj] Unhandled error code
Apr 8 15:08:52 b4 kernel: [ 447.579702] sd 0:0:9:0: [sdj]
Apr 8 15:08:52 b4 kernel: [ 447.579705] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:52 b4 kernel: [ 447.579707] sd 0:0:9:0: [sdj] CDB:
Apr 8 15:08:52 b4 kernel: [ 447.579712] Write(10): 2a 00 00 04 18 00 00 04 00 00
Apr 8 15:08:52 b4 kernel: [ 447.579714] end_request: I/O error, dev sdj, sector 268288
Apr 8 15:08:52 b4 kernel: [ 447.580031] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:52 b4 kernel: [ 447.580103] sd 0:0:10:0: [sdk] Unhandled error code
Apr 8 15:08:52 b4 kernel: [ 447.580105] sd 0:0:10:0: [sdk]
Apr 8 15:08:52 b4 kernel: [ 447.580108] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:52 b4 kernel: [ 447.580110] sd 0:0:10:0: [sdk] CDB:
Apr 8 15:08:52 b4 kernel: [ 447.580115] Write(10): 2a 00 00 04 24 00 00 01 08 00
Apr 8 15:08:52 b4 kernel: [ 447.580116] end_request: I/O error, dev sdk, sector 271360
Apr 8 15:08:52 b4 kernel: [ 447.580434] mpt2sas0: log_info(0x31120320): originator(PL), code(0x12), sub_code(0x0320)
Apr 8 15:08:52 b4 kernel: [ 447.580505] sd 0:0:12:0: [sdm] Unhandled error code
Apr 8 15:08:52 b4 kernel: [ 447.580507] sd 0:0:12:0: [sdm]
Apr 8 15:08:52 b4 kernel: [ 447.580508] Result: hostbyte=DID_SOFT_ERROR driverbyte=DRIVER_OK
Apr 8 15:08:52 b4 kernel: [ 447.580511] sd 0:0:12:0: [sdm] CDB:
Apr 8 15:08:52 b4 kernel: [ 447.580516] Write(10): 2a 00 00 04 20 00 00 01 08 00
Apr 8 15:08:52 b4 kernel: [ 447.580518] end_request: I/O error, dev sdm, sector 270336
Apr 8 15:08:53 b4 kernel: [ 448.614727] md/raid10:md4: Disk failure on sdm1, disabling device.
Apr 8 15:08:53 b4 kernel: [ 448.614727] md/raid10:md4: Operation continuing on 1 devices.
Apr 8 15:08:53 b4 kernel: [ 448.656989] md/raid10:md4: Disk failure on sdf1, disabling device.
Apr 8 15:08:53 b4 kernel: [ 448.656989] md/raid10:md4: Operation continuing on 0 devices.
Apr 8 15:08:53 b4 kernel: [ 448.657142] md4: WRITE SAME failed. Manually zeroing.
Apr 8 15:08:53 b4 kernel: [ 448.657178] Buffer I/O error on device md4, logical block 488144896
Apr 8 15:08:53 b4 kernel: [ 448.657179] lost page write due to I/O error on md4
Apr 8 15:08:53 b4 kernel: [ 448.657182] JBD2: Error -5 detected when updating journal superblock for md4-8.
Apr 8 15:08:53 b4 kernel: [ 448.657708] Aborting journal on device md4-8.
Apr 8 15:08:53 b4 kernel: [ 448.657794] Buffer I/O error on device md4, logical block 488144896
Apr 8 15:08:53 b4 kernel: [ 448.657875] lost page write due to I/O error on md4
Apr 8 15:08:53 b4 kernel: [ 448.657952] JBD2: Error -5 detected when updating journal superblock for md4-8.
Apr 8 15:08:54 b4 kernel: [ 449.663626] md: md4: resync done.
Apr 8 15:08:54 b4 kernel: [ 449.666948] md: checkpointing resync of md4.
Apr 8 15:08:54 b4 kernel: [ 449.667275] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.667279] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.667282] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.667284] disk 1, wo:1, o:0, dev:sdk1
Apr 8 15:08:54 b4 kernel: [ 449.667286] disk 2, wo:1, o:0, dev:sdj1
Apr 8 15:08:54 b4 kernel: [ 449.667288] disk 3, wo:1, o:0, dev:sdf1
Apr 8 15:08:54 b4 kernel: [ 449.713524] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.713528] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.713531] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.713533] disk 1, wo:1, o:0, dev:sdk1
Apr 8 15:08:54 b4 kernel: [ 449.713535] disk 2, wo:1, o:0, dev:sdj1
Apr 8 15:08:54 b4 kernel: [ 449.713541] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.713543] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.713545] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.713547] disk 1, wo:1, o:0, dev:sdk1
Apr 8 15:08:54 b4 kernel: [ 449.713549] disk 2, wo:1, o:0, dev:sdj1
Apr 8 15:08:54 b4 kernel: [ 449.803374] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.803378] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.803381] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.803383] disk 1, wo:1, o:0, dev:sdk1
Apr 8 15:08:54 b4 kernel: [ 449.803387] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.803389] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.803391] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.803393] disk 1, wo:1, o:0, dev:sdk1
Apr 8 15:08:54 b4 kernel: [ 449.893250] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.893254] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.893257] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.893261] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.893263] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.893265] disk 0, wo:1, o:0, dev:sdm1
Apr 8 15:08:54 b4 kernel: [ 449.983101] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.983105] --- wd:0 rd:4
Apr 8 15:08:54 b4 kernel: [ 449.983325] md: resync of RAID array md4
Apr 8 15:08:54 b4 kernel: [ 449.983404] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
Apr 8 15:08:54 b4 kernel: [ 449.983490] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for resync.
Apr 8 15:08:54 b4 kernel: [ 449.983607] md: using 128k window, over a total of 3906762752k.
Apr 8 15:08:54 b4 kernel: [ 449.983817] md: md4: resync done.
Apr 8 15:08:54 b4 kernel: [ 449.987338] RAID10 conf printout:
Apr 8 15:08:54 b4 kernel: [ 449.987342] --- wd:0 rd:4
Apr 8 15:09:05 b4 kernel: [ 460.616633] Buffer I/O error on device md4, logical block 0
Apr 8 15:09:05 b4 kernel: [ 460.616697] lost page write due to I/O error on md4
Apr 8 15:09:05 b4 kernel: [ 460.616760] EXT4-fs error (device md4): ext4_put_super:858: Couldn't clean up the journal
Apr 8 15:09:05 b4 kernel: [ 460.616901] EXT4-fs (md4): Remounting filesystem read-only
Apr 8 15:09:05 b4 kernel: [ 460.616957] EXT4-fs (md4): previous I/O error to superblock detected
Apr 8 15:09:05 b4 kernel: [ 460.617017] Buffer I/O error on device md4, logical block 0
Apr 8 15:09:05 b4 kernel: [ 460.617074] lost page write due to I/O error on md4
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