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RAID 6 Failure follow up

DISCUSSION Andrew Dunn 7 participants 23 messages Nov 8, 2009 – Nov 17, 2009 MD RAID

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#0 lore raw

This is kind of interesting:

storrgie@ALEXANDRIA:~$ sudo mdadm --assemble --force /dev/md0
mdadm: no devices found for /dev/md0

All of the devices are there in /dev, so I wanted to examine them:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sde1
/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:57:04 2009
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 4
Spare Devices : 0
Checksum : 4ff41c5f - correct
Events : 43

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 0 8 65 0 active sync /dev/sde1

   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       0        0        4      faulty removed
   5     5       0        0        5      faulty removed
   6     6       0        0        6      faulty removed
   7     7       0        0        7      faulty removed
   8     8       8      193        8      active sync   /dev/sdm1

First raid device shows the failures....

One of the 'removed' devices:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sdi1
/dev/sdi1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:53:30 2009
State : active
Active Devices : 9
Working Devices : 9
Failed Devices : 0
Spare Devices : 0
Checksum : 4ff41b2f - correct
Events : 21

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 4 8 129 4 active sync /dev/sdi1

   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       8      129        4      active sync   /dev/sdi1
   5     5       8      145        5      active sync   /dev/sdj1
   6     6       8      161        6      active sync   /dev/sdk1
   7     7       8      177        7      active sync   /dev/sdl1
   8     8       8      193        8      active sync   /dev/sdm1
Signature · 2 lines
Andrew Dunn
http://agdunn.net
#1 lore raw
Quoted 77 lines · Andrew Dunn

This is kind of interesting:

storrgie@ALEXANDRIA:~$ sudo mdadm --assemble --force /dev/md0
mdadm: no devices found for /dev/md0

All of the devices are there in /dev, so I wanted to examine them:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sde1
/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:57:04 2009
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 4
Spare Devices : 0
Checksum : 4ff41c5f - correct
Events : 43

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 0 8 65 0 active sync /dev/sde1

   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       0        0        4      faulty removed
   5     5       0        0        5      faulty removed
   6     6       0        0        6      faulty removed
   7     7       0        0        7      faulty removed
   8     8       8      193        8      active sync   /dev/sdm1

First raid device shows the failures....

One of the 'removed' devices:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sdi1
/dev/sdi1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:53:30 2009
State : active
Active Devices : 9
Working Devices : 9
Failed Devices : 0
Spare Devices : 0
Checksum : 4ff41b2f - correct
Events : 21

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 4 8 129 4 active sync /dev/sdi1

Quoted 10 lines
   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       8      129        4      active sync   /dev/sdi1
   5     5       8      145        5      active sync   /dev/sdj1
   6     6       8      161        6      active sync   /dev/sdk1
   7     7       8      177        7      active sync   /dev/sdl1
   8     8       8      193        8      active sync   /dev/sdm1

Did you check dmesg and see if there were errors on those disks?

#2 lore raw
storrgie@ALEXANDRIA:~$ dmesg | grep sdi
[   31.019358] sd 11:0:0:0: [sdi] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.032233] sd 11:0:0:0: [sdi] Write Protect is off
[   31.032235] sd 11:0:0:0: [sdi] Mode Sense: 73 00 00 08
[   31.037483] sd 11:0:0:0: [sdi] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.066991]  sdi:
[   31.075719]  sdi1
[   31.124713] sd 11:0:0:0: [sdi] Attached SCSI disk
[   31.147407] md: bind<sdi1>
[   31.712366] raid5: device sdi1 operational as raid disk 4
[   31.713153]  disk 4, o:1, dev:sdi1
[   33.112975]  disk 4, o:1, dev:sdi1
[  297.528544] sd 11:0:0:0: [sdi] Sense Key : Recovered Error [current]
[descriptor]
[  297.528573] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through
information available
[  297.591382] sd 11:0:0:0: [sdi] Sense Key : Recovered Error [current]
[descriptor]
[  297.591407] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through
information available

I don't see anything glaring.

You should be able to force an assembly anyway (using the --force flag) but I'd make sure you know exactly what the issue is first, otherwise this is likely to happen again.

Do you think that the controller is dropping out? I know that I have 4 drives on one controller (AOC-USAS-L8i) and 5 drives on the other controller (SAME make/model). but I think they are sequentially connected... as in sd[efghi] should be on one device and sd[jklm] should be on the other... any easy way to verify?

Quoted 93 lines · Roger Heflin
Quoted 77 lines · Andrew Dunn

This is kind of interesting:

storrgie@ALEXANDRIA:~$ sudo mdadm --assemble --force /dev/md0
mdadm: no devices found for /dev/md0

All of the devices are there in /dev, so I wanted to examine them:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sde1
/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:57:04 2009
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 4
Spare Devices : 0
Checksum : 4ff41c5f - correct
Events : 43

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 0 8 65 0 active sync /dev/sde1

   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       0        0        4      faulty removed
   5     5       0        0        5      faulty removed
   6     6       0        0        6      faulty removed
   7     7       0        0        7      faulty removed
   8     8       8      193        8      active sync   /dev/sdm1

First raid device shows the failures....

One of the 'removed' devices:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sdi1
/dev/sdi1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:53:30 2009
State : active
Active Devices : 9
Working Devices : 9
Failed Devices : 0
Spare Devices : 0
Checksum : 4ff41b2f - correct
Events : 21

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 4 8 129 4 active sync /dev/sdi1

Quoted 10 lines
   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       8      129        4      active sync   /dev/sdi1
   5     5       8      145        5      active sync   /dev/sdj1
   6     6       8      161        6      active sync   /dev/sdk1
   7     7       8      177        7      active sync   /dev/sdl1
   8     8       8      193        8      active sync   /dev/sdm1

Did you check dmesg and see if there were errors on those disks?

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#3 lore raw
Quoted 5 lines · Andrew Dunn

Do you think that the controller is dropping out? I know that I have 4 drives on one controller (AOC-USAS-L8i) and 5 drives on the other controller (SAME make/model). but I think they are sequentially connected... as in sd[efghi] should be on one device and sd[jklm] should be on the other... any easy way to verify?

If you are running smartd, cease doing so and do not use the smartctl command on drives attached to these controllers - use causes drives to be offlined.

It appears the smartctl is broken with LSISAS 1068E based controllers.

See:

https://bugzilla.redhat.com/show_bug.cgi?id=452389

and

http://marc.info/?l=linux-scsi&m=125673590221135&w=2

Regards,

Richard

#4 lore raw

New data now, I got this from dmesg when it went down again. Hopefully there is some significance to you guys.

Quoted 6 lines
[14269.650381] sd 10:0:3:0: rejecting I/O to offline device
[14269.650453] sd 10:0:3:0: rejecting I/O to offline device
[14269.650524] sd 10:0:3:0: rejecting I/O to offline device
[14269.650595] sd 10:0:3:0: rejecting I/O to offline device
[14269.650672] sd 10:0:3:0: [sdh] Unhandled error code
[14269.650675] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 2 lines
[14269.650680] end_request: I/O error, dev sdh, sector 1435085631
[14269.650749] raid5:md0: read error not correctable (sector

1435085568 on sdh1).

Quoted 3 lines
[14269.650753] raid5: Disk failure on sdh1, disabling device.
[14269.650754] raid5: Operation continuing on 7 devices.
[14269.650886] raid5:md0: read error not correctable (sector

1435085576 on sdh1).

Quoted 1 line
[14269.650890] raid5:md0: read error not correctable (sector

1435085584 on sdh1).

Quoted 1 line
[14269.650894] raid5:md0: read error not correctable (sector

1435085592 on sdh1).

Quoted 1 line
[14269.650898] raid5:md0: read error not correctable (sector

1435085600 on sdh1).

Quoted 1 line
[14269.650902] raid5:md0: read error not correctable (sector

1435085608 on sdh1).

Quoted 1 line
[14269.650905] raid5:md0: read error not correctable (sector

1435085616 on sdh1).

Quoted 1 line
[14269.650909] raid5:md0: read error not correctable (sector

1435085624 on sdh1).

Quoted 1 line
[14269.650913] raid5:md0: read error not correctable (sector

1435085632 on sdh1).

Quoted 1 line
[14269.650917] raid5:md0: read error not correctable (sector

1435085640 on sdh1).

Quoted 2 lines
[14269.650943] sd 10:0:3:0: [sdh] Unhandled error code
[14269.650946] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.650950] end_request: I/O error, dev sdh, sector 1435085887
[14269.651049] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651051] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.651055] end_request: I/O error, dev sdh, sector 1435086143
[14269.651151] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651153] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.651157] end_request: I/O error, dev sdh, sector 1435086399
[14269.651253] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651255] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.651259] end_request: I/O error, dev sdh, sector 1435086655
[14269.651358] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651361] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.651364] end_request: I/O error, dev sdh, sector 1435086911
[14269.651461] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651463] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 3 lines
[14269.651467] end_request: I/O error, dev sdh, sector 1435087167
[14269.651565] sd 10:0:3:0: [sdh] Unhandled error code
[14269.651568] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 6 lines
[14269.651571] end_request: I/O error, dev sdh, sector 1435087423
[14269.670675] end_request: I/O error, dev sdf, sector 1953519935
[14269.670739] md: super_written gets error=-5, uptodate=0
[14269.670743] raid5: Disk failure on sdf1, disabling device.
[14269.670745] raid5: Operation continuing on 6 devices.
[14269.672525] end_request: I/O error, dev sdg, sector 1953519935
Quoted 8 lines
[14269.672598] md: super_written gets error=-5, uptodate=0
[14269.672603] raid5: Disk failure on sdg1, disabling device.
[14269.672605] raid5: Operation continuing on 5 devices.
[14269.674402] end_request: I/O error, dev sde, sector 1953519935
[14269.674474] md: super_written gets error=-5, uptodate=0
[14269.674478] raid5: Disk failure on sde1, disabling device.
[14269.674480] raid5: Operation continuing on 4 devices.
[14269.769991] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14269.769997] Descriptor sense data with sense descriptors (in hex):
[14269.770000]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14269.770012]         00 4f 00 c2 00 50
[14269.770018] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 2 lines
[14269.800245] md: md0: recovery done.
[14269.869990] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14269.869997] Descriptor sense data with sense descriptors (in hex):
[14269.870008]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14269.870019]         00 4f 00 c2 00 50
[14269.870025] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 42 lines
[14269.905144] RAID5 conf printout:
[14269.905148]  --- rd:9 wd:4
[14269.905152]  disk 0, o:0, dev:sde1
[14269.905155]  disk 1, o:0, dev:sdf1
[14269.905157]  disk 2, o:0, dev:sdg1
[14269.905160]  disk 3, o:0, dev:sdh1
[14269.905162]  disk 4, o:1, dev:sdi1
[14269.905165]  disk 5, o:1, dev:sdj1
[14269.905167]  disk 6, o:1, dev:sdk1
[14269.905169]  disk 7, o:1, dev:sdl1
[14269.905172]  disk 8, o:1, dev:sdm1
[14269.941265] RAID5 conf printout:
[14269.941269]  --- rd:9 wd:4
[14269.941273]  disk 0, o:0, dev:sde1
[14269.941276]  disk 1, o:0, dev:sdf1
[14269.941278]  disk 2, o:0, dev:sdg1
[14269.941281]  disk 3, o:0, dev:sdh1
[14269.941283]  disk 4, o:1, dev:sdi1
[14269.941286]  disk 5, o:1, dev:sdj1
[14269.941289]  disk 7, o:1, dev:sdl1
[14269.941291]  disk 8, o:1, dev:sdm1
[14269.941300] RAID5 conf printout:
[14269.941302]  --- rd:9 wd:4
[14269.941304]  disk 0, o:0, dev:sde1
[14269.941307]  disk 1, o:0, dev:sdf1
[14269.941309]  disk 2, o:0, dev:sdg1
[14269.941311]  disk 3, o:0, dev:sdh1
[14269.941314]  disk 4, o:1, dev:sdi1
[14269.941316]  disk 5, o:1, dev:sdj1
[14269.941318]  disk 7, o:1, dev:sdl1
[14269.941321]  disk 8, o:1, dev:sdm1
[14269.981260] RAID5 conf printout:
[14269.981263]  --- rd:9 wd:4
[14269.981265]  disk 0, o:0, dev:sde1
[14269.981268]  disk 2, o:0, dev:sdg1
[14269.981270]  disk 3, o:0, dev:sdh1
[14269.981273]  disk 4, o:1, dev:sdi1
[14269.981275]  disk 5, o:1, dev:sdj1
[14269.981277]  disk 7, o:1, dev:sdl1
[14269.981280]  disk 8, o:1, dev:sdm1
[14269.981284] RAID5 conf printout:
[14269.981286]  --- rd:9 wd:4
Quoted 8 lines
[14269.981289]  disk 0, o:0, dev:sde1
[14269.981291]  disk 2, o:0, dev:sdg1
[14269.981293]  disk 3, o:0, dev:sdh1
[14269.981296]  disk 4, o:1, dev:sdi1
[14269.981298]  disk 5, o:1, dev:sdj1
[14269.981300]  disk 7, o:1, dev:sdl1
[14269.981302]  disk 8, o:1, dev:sdm1
[14270.003316] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.003324] Descriptor sense data with sense descriptors (in hex):
[14270.003327]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.003338]         00 4f 00 c2 00 50
[14270.003344] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 23 lines
[14270.021260] RAID5 conf printout:
[14270.021263]  --- rd:9 wd:4
[14270.021266]  disk 0, o:0, dev:sde1
[14270.021269]  disk 3, o:0, dev:sdh1
[14270.021271]  disk 4, o:1, dev:sdi1
[14270.021274]  disk 5, o:1, dev:sdj1
[14270.021276]  disk 7, o:1, dev:sdl1
[14270.021278]  disk 8, o:1, dev:sdm1
[14270.021283] RAID5 conf printout:
[14270.021285]  --- rd:9 wd:4
[14270.021287]  disk 0, o:0, dev:sde1
[14270.021289]  disk 3, o:0, dev:sdh1
[14270.021292]  disk 4, o:1, dev:sdi1
[14270.021294]  disk 5, o:1, dev:sdj1
[14270.021296]  disk 7, o:1, dev:sdl1
[14270.021298]  disk 8, o:1, dev:sdm1
[14270.061261] RAID5 conf printout:
[14270.061264]  --- rd:9 wd:4
[14270.061266]  disk 0, o:0, dev:sde1
[14270.061269]  disk 4, o:1, dev:sdi1
[14270.061272]  disk 5, o:1, dev:sdj1
[14270.061274]  disk 7, o:1, dev:sdl1
[14270.061276]  disk 8, o:1, dev:sdm1
Quoted 8 lines
[14270.061281] RAID5 conf printout:
[14270.061283]  --- rd:9 wd:4
[14270.061285]  disk 0, o:0, dev:sde1
[14270.061287]  disk 4, o:1, dev:sdi1
[14270.061289]  disk 5, o:1, dev:sdj1
[14270.061292]  disk 7, o:1, dev:sdl1
[14270.061294]  disk 8, o:1, dev:sdm1
[14270.061647] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.061653] Descriptor sense data with sense descriptors (in hex):
[14270.061656]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.061667]         00 4f 00 c2 00 50
[14270.061672] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 7 lines
[14270.091263] RAID5 conf printout:
[14270.091267]  --- rd:9 wd:4
[14270.091271]  disk 4, o:1, dev:sdi1
[14270.091274]  disk 5, o:1, dev:sdj1
[14270.091276]  disk 7, o:1, dev:sdl1
[14270.091279]  disk 8, o:1, dev:sdm1
[14270.153319] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.153325] Descriptor sense data with sense descriptors (in hex):
[14270.153328]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.153340]         00 4f 00 c2 00 50
[14270.153346] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.211651] sd 11:0:0:0: [sdi] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.211657] Descriptor sense data with sense descriptors (in hex):
[14270.211660]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.211671]         00 4f 00 c2 00 50
[14270.211677] sd 11:0:0:0: [sdi] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.324057] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.324065] Descriptor sense data with sense descriptors (in hex):
[14270.324067]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.324079]         00 4f 00 c2 00 50
[14270.324085] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.382390] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.382396] Descriptor sense data with sense descriptors (in hex):
[14270.382399]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.382410]         00 4f 00 c2 00 50
[14270.382416] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.474060] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.474068] Descriptor sense data with sense descriptors (in hex):
[14270.474071]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.474083]         00 4f 00 c2 00 50
[14270.474089] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.532394] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.532401] Descriptor sense data with sense descriptors (in hex):
[14270.532404]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.532415]         00 4f 00 c2 00 50
[14270.532421] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.632394] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.632402] Descriptor sense data with sense descriptors (in hex):
[14270.632405]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.632417]         00 4f 00 c2 00 50
[14270.632423] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.690729] sd 11:0:1:0: [sdj] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.690736] Descriptor sense data with sense descriptors (in hex):
[14270.690739]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.690751]         00 4f 00 c2 00 50
[14270.690757] sd 11:0:1:0: [sdj] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.804065] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.804073] Descriptor sense data with sense descriptors (in hex):
[14270.804076]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.804088]         00 4f 00 c2 00 50
[14270.804094] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.862400] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.862406] Descriptor sense data with sense descriptors (in hex):
[14270.862409]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.862420]         00 4f 00 c2 00 50
[14270.862426] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14270.954070] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14270.954079] Descriptor sense data with sense descriptors (in hex):
[14270.954081]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14270.954093]         00 4f 00 c2 00 50
[14270.954099] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.012399] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.012406] Descriptor sense data with sense descriptors (in hex):
[14271.012408]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.012420]         00 4f 00 c2 00 50
[14271.012426] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.104072] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.104080] Descriptor sense data with sense descriptors (in hex):
[14271.104083]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.104094]         00 4f 00 c2 00 50
[14271.104100] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.162400] sd 11:0:2:0: [sdk] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.162407] Descriptor sense data with sense descriptors (in hex):
[14271.162410]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.162422]         00 4f 00 c2 00 50
[14271.162428] sd 11:0:2:0: [sdk] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.278147] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.278155] Descriptor sense data with sense descriptors (in hex):
[14271.278157]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.278169]         00 4f 00 c2 00 50
[14271.278175] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.336487] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.336495] Descriptor sense data with sense descriptors (in hex):
[14271.336498]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.336509]         00 4f 00 c2 00 50
[14271.336515] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.428148] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.428156] Descriptor sense data with sense descriptors (in hex):
[14271.428158]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.428170]         00 4f 00 c2 00 50
[14271.428176] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.486485] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.486493] Descriptor sense data with sense descriptors (in hex):
[14271.486496]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.486508]         00 4f 00 c2 00 50
[14271.486514] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.586482] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.586489] Descriptor sense data with sense descriptors (in hex):
[14271.586492]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.586503]         00 4f 00 c2 00 50
[14271.586509] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.644813] sd 11:0:3:0: [sdl] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.644819] Descriptor sense data with sense descriptors (in hex):
[14271.644822]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.644833]         00 4f 00 c2 00 50
[14271.644839] sd 11:0:3:0: [sdl] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.762812] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.762820] Descriptor sense data with sense descriptors (in hex):
[14271.762823]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.762834]         00 4f 00 c2 00 50
[14271.762841] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.821145] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.821152] Descriptor sense data with sense descriptors (in hex):
[14271.821154]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.821166]         00 4f 00 c2 00 50
[14271.821172] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.912816] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.912824] Descriptor sense data with sense descriptors (in hex):
[14271.912827]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.912838]         00 4f 00 c2 00 50
[14271.912844] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 1 line
[14271.971152] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14271.971161] Descriptor sense data with sense descriptors (in hex):
[14271.971163]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14271.971175]         00 4f 00 c2 00 50
[14271.971181] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 1 line
[14272.071150] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14272.071157] Descriptor sense data with sense descriptors (in hex):
[14272.071160]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14272.071172]         00 4f 00 c2 00 50
[14272.071178] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 1 line
[14272.129485] sd 11:0:4:0: [sdm] Sense Key : Recovered Error

[current] [descriptor]

Quoted 4 lines
[14272.129494] Descriptor sense data with sense descriptors (in hex):
[14272.129497]         72 01 00 1d 00 00 00 0e 09 0c 00 00 00 00 00 00
[14272.129508]         00 4f 00 c2 00 50
[14272.129514] sd 11:0:4:0: [sdm] Add. Sense: ATA pass through

information available

Quoted 5 lines
[14365.066847] Aborting journal on device md0:8.
[14365.066946] __ratelimit: 246 callbacks suppressed
[14365.066949] Buffer I/O error on device md0, logical block 854622208
[14365.067018] lost page write due to I/O error on md0
[14365.067023] JBD2: I/O error detected when updating journal

superblock for md0:8.

Quoted 1 line
[14382.768622] EXT4-fs error (device md0): ext4_find_entry: reading

directory #6879966 offset 0

Quoted 3 lines
[14382.820264] Buffer I/O error on device md0, logical block 0
[14382.820332] lost page write due to I/O error on md0
[14401.997859] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891861, block=27267765

Quoted 4 lines
[14401.998043] EXT4-fs (md0): previous I/O error to superblock detected
[14402.041639] Buffer I/O error on device md0, logical block 0
[14402.041708] lost page write due to I/O error on md0
[14402.042025] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892055, block=27267777

Quoted 4 lines
[14402.042189] EXT4-fs (md0): previous I/O error to superblock detected
[14402.042337] Buffer I/O error on device md0, logical block 0
[14402.042404] lost page write due to I/O error on md0
[14402.042615] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891691, block=27267754

Quoted 4 lines
[14402.042780] EXT4-fs (md0): previous I/O error to superblock detected
[14402.042927] Buffer I/O error on device md0, logical block 0
[14402.042994] lost page write due to I/O error on md0
[14402.043204] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891589, block=27267748

Quoted 4 lines
[14402.043369] EXT4-fs (md0): previous I/O error to superblock detected
[14402.043514] Buffer I/O error on device md0, logical block 0
[14402.043581] lost page write due to I/O error on md0
[14402.045186] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892719, block=27267818

Quoted 4 lines
[14402.045351] EXT4-fs (md0): previous I/O error to superblock detected
[14402.045500] Buffer I/O error on device md0, logical block 0
[14402.045569] lost page write due to I/O error on md0
[14402.061829] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891914, block=27267768

Quoted 4 lines
[14402.061983] EXT4-fs (md0): previous I/O error to superblock detected
[14402.062117] Buffer I/O error on device md0, logical block 0
[14402.062175] lost page write due to I/O error on md0
[14402.062495] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891136, block=27267719

Quoted 4 lines
[14402.062651] EXT4-fs (md0): previous I/O error to superblock detected
[14402.062793] Buffer I/O error on device md0, logical block 0
[14402.062859] lost page write due to I/O error on md0
[14402.063053] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6893036, block=27267838

Quoted 4 lines
[14402.063217] EXT4-fs (md0): previous I/O error to superblock detected
[14402.063357] Buffer I/O error on device md0, logical block 0
[14402.063423] lost page write due to I/O error on md0
[14402.063624] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892357, block=27267796

Quoted 4 lines
[14402.063793] EXT4-fs (md0): previous I/O error to superblock detected
[14402.063935] Buffer I/O error on device md0, logical block 0
[14402.064001] lost page write due to I/O error on md0
[14402.064193] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891032, block=27267713

Quoted 4 lines
[14402.064355] EXT4-fs (md0): previous I/O error to superblock detected
[14402.064496] Buffer I/O error on device md0, logical block 0
[14402.064561] lost page write due to I/O error on md0
[14402.064741] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891782, block=27267760

Quoted 2 lines
[14402.064906] EXT4-fs (md0): previous I/O error to superblock detected
[14402.065232] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892332, block=27267794

Quoted 2 lines
[14402.065395] EXT4-fs (md0): previous I/O error to superblock detected
[14402.065714] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892755, block=27267821

Quoted 2 lines
[14402.065878] EXT4-fs (md0): previous I/O error to superblock detected
[14402.066197] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892235, block=27267788

Quoted 2 lines
[14402.066362] EXT4-fs (md0): previous I/O error to superblock detected
[14402.066675] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892552, block=27267808

Quoted 2 lines
[14402.066840] EXT4-fs (md0): previous I/O error to superblock detected
[14402.067156] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892123, block=27267781

Quoted 2 lines
[14402.067321] EXT4-fs (md0): previous I/O error to superblock detected
[14402.067635] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892256, block=27267789

Quoted 2 lines
[14402.067800] EXT4-fs (md0): previous I/O error to superblock detected
[14402.068114] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892532, block=27267807

Quoted 2 lines
[14402.068278] EXT4-fs (md0): previous I/O error to superblock detected
[14402.068594] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892318, block=27267793

Quoted 2 lines
[14402.068758] EXT4-fs (md0): previous I/O error to superblock detected
[14402.069069] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892845, block=27267826

Quoted 2 lines
[14402.069233] EXT4-fs (md0): previous I/O error to superblock detected
[14402.069543] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892980, block=27267835

Quoted 2 lines
[14402.069707] EXT4-fs (md0): previous I/O error to superblock detected
[14402.074971] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890993, block=27267711

Quoted 2 lines
[14402.075140] EXT4-fs (md0): previous I/O error to superblock detected
[14402.075540] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891750, block=27267758

Quoted 2 lines
[14402.075686] EXT4-fs (md0): previous I/O error to superblock detected
[14402.076028] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891642, block=27267751

Quoted 2 lines
[14402.076174] EXT4-fs (md0): previous I/O error to superblock detected
[14402.076543] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892605, block=27267811

Quoted 2 lines
[14402.076689] EXT4-fs (md0): previous I/O error to superblock detected
[14402.077059] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892136, block=27267782

Quoted 2 lines
[14402.077223] EXT4-fs (md0): previous I/O error to superblock detected
[14402.077567] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892717, block=27267818

Quoted 2 lines
[14402.077732] EXT4-fs (md0): previous I/O error to superblock detected
[14402.078080] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890999, block=27267711

Quoted 2 lines
[14402.078243] EXT4-fs (md0): previous I/O error to superblock detected
[14402.078593] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892362, block=27267796

Quoted 2 lines
[14402.080842] EXT4-fs (md0): previous I/O error to superblock detected
[14402.083259] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892867, block=27267828

Quoted 2 lines
[14402.083423] EXT4-fs (md0): previous I/O error to superblock detected
[14402.083798] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891361, block=27267734

Quoted 2 lines
[14402.083963] EXT4-fs (md0): previous I/O error to superblock detected
[14402.084315] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892012, block=27267774

Quoted 2 lines
[14402.084480] EXT4-fs (md0): previous I/O error to superblock detected
[14402.084852] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891626, block=27267750

Quoted 2 lines
[14402.085014] EXT4-fs (md0): previous I/O error to superblock detected
[14402.085365] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891320, block=27267731

Quoted 2 lines
[14402.085530] EXT4-fs (md0): previous I/O error to superblock detected
[14402.085880] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891588, block=27267748

Quoted 2 lines
[14402.086044] EXT4-fs (md0): previous I/O error to superblock detected
[14402.086390] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892584, block=27267810

Quoted 2 lines
[14402.086556] EXT4-fs (md0): previous I/O error to superblock detected
[14402.086901] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6892891, block=27267829

Quoted 2 lines
[14402.087066] EXT4-fs (md0): previous I/O error to superblock detected
[14402.087416] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891118, block=27267718

Quoted 2 lines
[14402.087579] EXT4-fs (md0): previous I/O error to superblock detected
[14402.087930] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891559, block=27267746

Quoted 2 lines
[14402.088094] EXT4-fs (md0): previous I/O error to superblock detected
[14402.088445] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6891212, block=27267724

Quoted 2 lines
[14402.088609] EXT4-fs (md0): previous I/O error to superblock detected
[14402.091550] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890993, block=27267711

Quoted 2 lines
[14402.091718] EXT4-fs (md0): previous I/O error to superblock detected
[14402.106045] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890999, block=27267711

Quoted 2 lines
[14402.106212] EXT4-fs (md0): previous I/O error to superblock detected
[14402.141662] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889579, block=27267622

Quoted 2 lines
[14402.141829] EXT4-fs (md0): previous I/O error to superblock detected
[14402.142185] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889980, block=27267647

Quoted 2 lines
[14402.142350] EXT4-fs (md0): previous I/O error to superblock detected
[14402.142703] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889704, block=27267630

Quoted 2 lines
[14402.142868] EXT4-fs (md0): previous I/O error to superblock detected
[14402.143318] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889340, block=27267607

Quoted 2 lines
[14402.143483] EXT4-fs (md0): previous I/O error to superblock detected
[14402.143826] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889563, block=27267621

Quoted 2 lines
[14402.143990] EXT4-fs (md0): previous I/O error to superblock detected
[14402.144341] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889220, block=27267600

Quoted 2 lines
[14402.144506] EXT4-fs (md0): previous I/O error to superblock detected
[14402.144869] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889358, block=27267608

Quoted 2 lines
[14402.145034] EXT4-fs (md0): previous I/O error to superblock detected
[14402.145379] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889530, block=27267619

Quoted 2 lines
[14402.145542] EXT4-fs (md0): previous I/O error to superblock detected
[14402.145890] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889721, block=27267631

Quoted 2 lines
[14402.146054] EXT4-fs (md0): previous I/O error to superblock detected
[14402.146398] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889621, block=27267625

Quoted 2 lines
[14402.146562] EXT4-fs (md0): previous I/O error to superblock detected
[14402.146900] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889920, block=27267643

Quoted 2 lines
[14402.147047] EXT4-fs (md0): previous I/O error to superblock detected
[14402.147390] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889508, block=27267618

Quoted 2 lines
[14402.147536] EXT4-fs (md0): previous I/O error to superblock detected
[14402.147869] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889673, block=27267628

Quoted 2 lines
[14402.148015] EXT4-fs (md0): previous I/O error to superblock detected
[14402.153911] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889220, block=27267600

Quoted 2 lines
[14402.154075] EXT4-fs (md0): previous I/O error to superblock detected
[14402.155819] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889340, block=27267607

Quoted 2 lines
[14402.155987] EXT4-fs (md0): previous I/O error to superblock detected
[14402.261374] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876431, block=27266800

Quoted 2 lines
[14402.261522] EXT4-fs (md0): previous I/O error to superblock detected
[14402.261981] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875468, block=27266740

Quoted 2 lines
[14402.262128] EXT4-fs (md0): previous I/O error to superblock detected
[14402.262587] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878644, block=27266939

Quoted 2 lines
[14402.262753] EXT4-fs (md0): previous I/O error to superblock detected
[14402.263223] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875990, block=27266773

Quoted 2 lines
[14402.263388] EXT4-fs (md0): previous I/O error to superblock detected
[14402.263741] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875325, block=27266731

Quoted 2 lines
[14402.263908] EXT4-fs (md0): previous I/O error to superblock detected
[14402.264259] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875779, block=27266760

Quoted 2 lines
[14402.264424] EXT4-fs (md0): previous I/O error to superblock detected
[14402.264808] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6879881, block=27267016

Quoted 2 lines
[14402.264972] EXT4-fs (md0): previous I/O error to superblock detected
[14402.265325] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878489, block=27266929

Quoted 2 lines
[14402.265491] EXT4-fs (md0): previous I/O error to superblock detected
[14402.265842] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878591, block=27266935

Quoted 2 lines
[14402.266005] EXT4-fs (md0): previous I/O error to superblock detected
[14402.266357] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876138, block=27266782

Quoted 2 lines
[14402.266520] EXT4-fs (md0): previous I/O error to superblock detected
[14402.266876] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875310, block=27266730

Quoted 2 lines
[14402.267042] EXT4-fs (md0): previous I/O error to superblock detected
[14402.267396] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876274, block=27266791

Quoted 2 lines
[14402.267560] EXT4-fs (md0): previous I/O error to superblock detected
[14402.267907] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875648, block=27266751

Quoted 2 lines
[14402.268071] EXT4-fs (md0): previous I/O error to superblock detected
[14402.268422] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876119, block=27266781

Quoted 2 lines
[14402.268586] EXT4-fs (md0): previous I/O error to superblock detected
[14402.269056] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877808, block=27266886

Quoted 2 lines
[14402.269219] EXT4-fs (md0): previous I/O error to superblock detected
[14402.269573] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878101, block=27266905

Quoted 2 lines
[14402.269738] EXT4-fs (md0): previous I/O error to superblock detected
[14402.270088] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877967, block=27266896

Quoted 2 lines
[14402.270264] EXT4-fs (md0): previous I/O error to superblock detected
[14402.270614] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877835, block=27266888

Quoted 2 lines
[14402.270793] EXT4-fs (md0): previous I/O error to superblock detected
[14402.271146] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875370, block=27266734

Quoted 2 lines
[14402.271323] EXT4-fs (md0): previous I/O error to superblock detected
[14402.271679] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877955, block=27266896

Quoted 2 lines
[14402.271854] EXT4-fs (md0): previous I/O error to superblock detected
[14402.272214] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876218, block=27266787

Quoted 2 lines
[14402.272391] EXT4-fs (md0): previous I/O error to superblock detected
[14402.272745] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875340, block=27266732

Quoted 2 lines
[14402.272922] EXT4-fs (md0): previous I/O error to superblock detected
[14402.273281] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878031, block=27266900

Quoted 2 lines
[14402.273452] EXT4-fs (md0): previous I/O error to superblock detected
[14402.273919] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874892, block=27266704

Quoted 2 lines
[14402.274097] EXT4-fs (md0): previous I/O error to superblock detected
[14402.274454] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878014, block=27266899

Quoted 2 lines
[14402.274628] EXT4-fs (md0): previous I/O error to superblock detected
[14402.274987] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6876066, block=27266778

Quoted 2 lines
[14402.275146] EXT4-fs (md0): previous I/O error to superblock detected
[14402.275488] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6879778, block=27267010

Quoted 2 lines
[14402.275646] EXT4-fs (md0): previous I/O error to superblock detected
[14402.275996] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6878310, block=27266918

Quoted 2 lines
[14402.276151] EXT4-fs (md0): previous I/O error to superblock detected
[14402.276624] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877450, block=27266864

Quoted 2 lines
[14402.276793] EXT4-fs (md0): previous I/O error to superblock detected
[14402.277148] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875397, block=27266736

Quoted 2 lines
[14402.277315] EXT4-fs (md0): previous I/O error to superblock detected
[14402.277778] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6877004, block=27266836

Quoted 2 lines
[14402.277943] EXT4-fs (md0): previous I/O error to superblock detected
[14402.278295] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875606, block=27266749

Quoted 2 lines
[14402.280543] EXT4-fs (md0): previous I/O error to superblock detected
[14402.283306] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874892, block=27266704

Quoted 2 lines
[14402.283472] EXT4-fs (md0): previous I/O error to superblock detected
[14402.285354] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875310, block=27266730

Quoted 2 lines
[14402.285519] EXT4-fs (md0): previous I/O error to superblock detected
[14402.302533] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874640, block=27266688

Quoted 2 lines
[14402.302698] EXT4-fs (md0): previous I/O error to superblock detected
[14402.304480] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874640, block=27266688

Quoted 2 lines
[14402.304629] EXT4-fs (md0): previous I/O error to superblock detected
[14402.752437] EXT4-fs error (device md0): ext4_journal_start_sb:

Detected aborted journal

Quoted 2 lines
[14402.752606] EXT4-fs (md0): Remounting filesystem read-only
[14419.267133] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874640, block=27266688

Quoted 1 line
[14419.297937] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6874892, block=27266704

Quoted 1 line
[14419.301517] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6875310, block=27266730

Quoted 1 line
[14419.332861] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889220, block=27267600

Quoted 1 line
[14419.335590] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6889340, block=27267607

Quoted 1 line
[14419.341744] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890993, block=27267711

Quoted 1 line
[14419.343458] EXT4-fs error (device md0): __ext4_get_inode_loc:

unable to read inode block - inode=6890999, block=27267711

Quoted 26 lines · Richard Scobie
Quoted 5 lines · Andrew Dunn

Do you think that the controller is dropping out? I know that I have 4 drives on one controller (AOC-USAS-L8i) and 5 drives on the other controller (SAME make/model). but I think they are sequentially connected... as in sd[efghi] should be on one device and sd[jklm] should be on the other... any easy way to verify?

If you are running smartd, cease doing so and do not use the smartctl command on drives attached to these controllers - use causes drives to be offlined.

It appears the smartctl is broken with LSISAS 1068E based controllers.

See:

https://bugzilla.redhat.com/show_bug.cgi?id=452389

and

http://marc.info/?l=linux-scsi&m=125673590221135&w=2

Regards,

Richard

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#5 lore raw
Quoted 13 lines · Andrew Dunn

New data now, I got this from dmesg when it went down again. Hopefully there is some significance to you guys.

Quoted 6 lines
[14269.650381] sd 10:0:3:0: rejecting I/O to offline device
[14269.650453] sd 10:0:3:0: rejecting I/O to offline device
[14269.650524] sd 10:0:3:0: rejecting I/O to offline device
[14269.650595] sd 10:0:3:0: rejecting I/O to offline device
[14269.650672] sd 10:0:3:0: [sdh] Unhandled error code
[14269.650675] sd 10:0:3:0: [sdh] Result: hostbyte=DID_NO_CONNECT

driverbyte=DRIVER_OK

Quoted 2 lines
[14269.650680] end_request: I/O error, dev sdh, sector 1435085631
[14269.650749] raid5:md0: read error not correctable (sector

1435085568 on sdh1).

Quoted 8 lines
Quoted 3 lines
[14269.650753] raid5: Disk failure on sdh1, disabling device.
[14269.650754] raid5: Operation continuing on 7 devices.
[14269.650886] raid5:md0: read error not correctable (sector

1435085576 on sdh1).

Quoted 1 line
[14269.650890] raid5:md0: read error not correctable (sector

1435085584 on sdh1).

Quoted 1 line
[14269.650894] raid5:md0: read error not correctable (sector

1435085592 on sdh1).

[...]

I am not convinced this is a drive failure (yet). You have sdh,sdi,sdj,sdk,sdl,sdm all reporting errors or error recovery.

This sounds like a physical backplane failure (is this on an expander system? we have seen this/had this happen before), a cable to the SATA card failing (we have seen this/had this happen before), or a power supply issue (can't handle all the drives in constant operation, which we have seen before as well).

Driver issues are possible, but it is pursuing normal failure code paths, so unless the driver is tickling the remove code on its own ...

Smart could be offlining the drive, and having it non-responsive. Something else could be doing that as well (vibration, power quality, ...)

What does

hdparm -I /dev/sdh

tell us?

If nothing, we need to use sdparm to get some information.

Joe

Signature · 9 lines
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics, Inc.
email: [email protected]
web  : http://scalableinformatics.com
       http://scalableinformatics.com/jackrabbit
phone: +1 734 786 8423 x121
fax  : +1 866 888 3112
cell : +1 734 612 4615
#6 lore raw
In reply to Richard Scobie

I am not, but this is quite interesting. What versions are affected? I am in ubuntu 9.10.

Quoted 26 lines · Richard Scobie
Quoted 5 lines · Andrew Dunn

Do you think that the controller is dropping out? I know that I have 4 drives on one controller (AOC-USAS-L8i) and 5 drives on the other controller (SAME make/model). but I think they are sequentially connected... as in sd[efghi] should be on one device and sd[jklm] should be on the other... any easy way to verify?

If you are running smartd, cease doing so and do not use the smartctl command on drives attached to these controllers - use causes drives to be offlined.

It appears the smartctl is broken with LSISAS 1068E based controllers.

See:

https://bugzilla.redhat.com/show_bug.cgi?id=452389

and

http://marc.info/?l=linux-scsi&m=125673590221135&w=2

Regards,

Richard

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#7 lore raw
Quoted 2 lines · Andrew Dunn

I am not, but this is quite interesting. What versions are affected? I am in ubuntu 9.10.

To my knowledge, there is no smartmontools version safe for use on these LSI based controllers.

You may run smartctl commands a few times and get away with it, but eventually it will bite you.

Losing 14 drives on a 16 drive array as a result, is no fun...

Hopefully it will be fixed one day.

Regards,

Richard

#8 lore raw

This is interesting to hear as I have been using smartmontools on my Supermicro LSI 1068E controller with the target firmware for 2 years now on CentOS 5. I have 3 RAID 1 arrays across 2 drives, a RAID 5 drive across 3 drives, and a RAID 0 across 2 drives.

I routinely will query smartctrl with something like

for i in a b c d e f; do smartctl -a /dev/sd$i | grep Reallocated; done

or

for i in a b c d e f; do smartctl -a /dev/sd$i | grep Temperature; done

Here are the system details

cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4] [raid0] md0 : active raid1 sdb1[1] sda1[0]

      104320 blocks [2/2] [UU]

md2 : active raid1 sdb3[1] sda3[0]

      2032128 blocks [2/2] [UU]

md3 : active raid0 sdd1[1] sdc1[0]

      625137152 blocks 64k chunks

md4 : active raid5 sdg1[2] sdf1[1] sde1[0]

      1953519872 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]

md1 : active raid1 sdb2[1] sda2[0]

      154151616 blocks [2/2] [UU]

lpsci
02:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI-Express Fusion-MPT SAS (rev 08)

modprobe.conf
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptsas

rpm -qa | grep smartmontools
smartmontools-5.38-2.el5

uname -r
2.6.18-128.4.1.el5

Quoted 15 lines · Richard Scobie
Quoted 3 lines · Andrew Dunn

I am not, but this is quite interesting. What versions are affected? I am in ubuntu 9.10.

To my knowledge, there is no smartmontools version safe for use on these LSI based controllers.

You may run smartctl commands a few times and get away with it, but eventually it will bite you.

Losing 14 drives on a 16 drive array as a result, is no fun...

Hopefully it will be fixed one day.

Quoted 8 lines

Regards,

Richard
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#9 lore raw
Quoted 4 lines · Ryan Wagoner

This is interesting to hear as I have been using smartmontools on my Supermicro LSI 1068E controller with the target firmware for 2 years now on CentOS 5. I have 3 RAID 1 arrays across 2 drives, a RAID 5 drive across 3 drives, and a RAID 0 across 2 drives.

I have 3 boxes using 1068E controllers attached to 16 drive port expander based chassis that have been built over the last 2.5 years and they all react badly.

In fact the latest one put together a month ago (which is using more recent controller IT firmware and kernel than the other two), will not tolerate a single smartctl command, where the other two will maybe 50% of the time.

Something is not right here and others running different drive setups - direct attached and port multipler based are seeing the same thing.

Suffice it to say, I would recommend heavy testing before putting into production and I personally have no confidence currently.

Regards,

Richard

#10 lore raw
In reply to Ryan Wagoner
Quoted 4 lines · Ryan Wagoner

This is interesting to hear as I have been using smartmontools on my Supermicro LSI 1068E controller with the target firmware for 2 years now on CentOS 5. I have 3 RAID 1 arrays across 2 drives, a RAID 5 drive across 3 drives, and a RAID 0 across 2 drives.

[...]

Quoted 2 lines

uname -r
2.6.18-128.4.1.el5

Kernel version matters. With 2.6.22 we only got occassional complaints that the drives are not capable of SMART checks that were not true but were otherwise harmless. With 2.6.26 and 2.6.30, the controller offlines the disks.

Gabor

Signature · 4 lines
     ---------------------------------------------------------
     MTA SZTAKI Computer and Automation Research Institute
                Hungarian Academy of Sciences
     ---------------------------------------------------------
#11 lore raw

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

I am however not running smard to my knowledge, smartmontools is installed and I access it through the webmin module, but checking the drives with that and the array failures have not happened at the same time.

Quoted 24 lines · Gabor Gombas
Quoted 5 lines · Ryan Wagoner

This is interesting to hear as I have been using smartmontools on my Supermicro LSI 1068E controller with the target firmware for 2 years now on CentOS 5. I have 3 RAID 1 arrays across 2 drives, a RAID 5 drive across 3 drives, and a RAID 0 across 2 drives.

[...]

Quoted 3 lines

uname -r
2.6.18-128.4.1.el5

Kernel version matters. With 2.6.22 we only got occassional complaints that the drives are not capable of SMART checks that were not true but were otherwise harmless. With 2.6.26 and 2.6.30, the controller offlines the disks.

Gabor

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#12 lore raw
Quoted 4 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

Signature · 4 lines
     ---------------------------------------------------------
     MTA SZTAKI Computer and Automation Research Institute
                Hungarian Academy of Sciences
     ---------------------------------------------------------
#13 lore raw

I am not experiencing this issue then. My devices are in /dev after the raid drop out. I can use smart scanning on them without issue also.

Quoted 15 lines · Gabor Gombas
Quoted 5 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#14 lore raw
In reply to Gabor Gombas

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Have you installed LSI's linux drivers? Some people say this solves their issue.

From the logs sent out last night do you think it could be something else?

Thanks a ton,

Quoted 15 lines · Gabor Gombas
Quoted 5 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#15 lore raw
Quoted 15 lines · Andrew Dunn

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Quoted 6 lines

Have you installed LSI's linux drivers? Some people say this solves their issue.

From the logs sent out last night do you think it could be something else?

Thanks a ton,

FWIW, I encountered the same issue, and seem to have found a viable workaround by accessing the SATA disks on that LSI backplane as scsi devices, e.g. by adding '-d scsi' to my smartctl/smartd.conf lines. No more errors in the logs, no more drives being kicked out. Though not as much info is available that way as when using de sata driver ('-d sat', or automatically), like temperature is unavailable, it does allow me to initiate the selftests and get their result, and to monitor generic smart status of the drives. Quite enough for me.

YMMV, though.

Vincent.

Quoted 17 lines
Quoted 14 lines · Gabor Gombas
Quoted 5 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

#16 lore raw

Thanks for your help, so far without smartctl installed I have had no issues... but it has only been about 12 hours.

Could you send me your smatd.conf?

Quoted 57 lines · Vincent Schut
Quoted 16 lines · Andrew Dunn

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Quoted 7 lines

Have you installed LSI's linux drivers? Some people say this solves their issue.

From the logs sent out last night do you think it could be something else?

Thanks a ton,

FWIW, I encountered the same issue, and seem to have found a viable workaround by accessing the SATA disks on that LSI backplane as scsi devices, e.g. by adding '-d scsi' to my smartctl/smartd.conf lines. No more errors in the logs, no more drives being kicked out. Though not as much info is available that way as when using de sata driver ('-d sat', or automatically), like temperature is unavailable, it does allow me to initiate the selftests and get their result, and to monitor generic smart status of the drives. Quite enough for me.

YMMV, though.

Vincent.

Quoted 18 lines
Quoted 15 lines · Gabor Gombas
Quoted 6 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the
time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#17 lore raw
Quoted 2 lines · Andrew Dunn

Thanks for your help, so far without smartctl installed I have had no issues... but it has only been about 12 hours.

I also had no issues when not running smartd/smartctl. It seems the combination of kernel, backplane SAS driver, and smart which triggers the trouble...

Quoted 2 lines

Could you send me your smatd.conf?

It's pretty much default, there's just one uncommented line in it:

DEVICESCAN -d scsi -a -o on -S on -s (S/../.././02|L/../../6/03) -W 4,45,55 -R 5 -m [email protected] -M exec /usr/share/smartmontools/smartd-runner

(the above 3 lines should be all on one line).
I plan to replace the devicescan with explicit /dev/sd.. items, but as I'm currently regularly adding and removing (usb) drives, I kept the auto devicescan statement. The rest means: enable smart on all drives, plan daily short and weekly long selftests, and warn on temperature too high or temp change of more than 5 deg., and mail warnings/errors to me.

VS.

Quoted 56 lines
Quoted 53 lines · Vincent Schut
Quoted 16 lines · Andrew Dunn

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Quoted 7 lines

Have you installed LSI's linux drivers? Some people say this solves their issue.

From the logs sent out last night do you think it could be something else?

Thanks a ton,

FWIW, I encountered the same issue, and seem to have found a viable workaround by accessing the SATA disks on that LSI backplane as scsi devices, e.g. by adding '-d scsi' to my smartctl/smartd.conf lines. No more errors in the logs, no more drives being kicked out. Though not as much info is available that way as when using de sata driver ('-d sat', or automatically), like temperature is unavailable, it does allow me to initiate the selftests and get their result, and to monitor generic smart status of the drives. Quite enough for me.

YMMV, though.

Vincent.

Quoted 16 lines
Quoted 15 lines · Gabor Gombas
Quoted 6 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the
time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

#18 lore raw
In reply to Vincent Schut
Quoted 19 lines · Vincent Schut
Quoted 18 lines · Andrew Dunn

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Have you installed LSI's linux drivers? Some people say this solves their issue.

Quoted 8 lines
Quoted 3 lines

From the logs sent out last night do you think it could be something else?

Thanks a ton,

FWIW, I encountered the same issue, and seem to have found a viable workaround by accessing the SATA disks on that LSI backplane as scsi devices, e.g. by adding '-d scsi' to my smartctl/smartd.conf lines. No more errors in the logs, no more drives being kicked out. Though not as much info is available that way as when using de sata driver ('-d sat', or automatically), like temperature is unavailable, it does allow me to initiate the selftests and get their result, and to monitor generic smart status of the drives. Quite enough for me.

YMMV, though.

Folks, I need to retract this. Thought I've had far less problems with '-d scsi' instead of '-d sat' when running the LSI SAS / smartmontools / mdadm combo, I got bitten again last night by a drive being kicked out for no apparent reason. For now my only possible advise is: don't use smartmontools on drives that are on this LSI SAS backplane. I dearly hope this will improve soon; I hate it to have my drives go unmonitored for too long...

Vincent.

Quoted 25 lines

Vincent.

Quoted 17 lines
Quoted 14 lines · Gabor Gombas
Quoted 5 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

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#19 lore raw
In reply to Andrew Dunn

Boot up a CentOS 5 LiveCD. It should detect your arrays and try running smartctl. From my experience with different distros I have found that Red Hat spends a good amount of time making sure enterprise hardware is stable on their system. Ubuntu seems to focus more on desktops.

Ryan

Quoted 44 lines · Andrew Dunn

I am able to reproduce this smart error now. I have done it twice, so maybe other things are causing this also.

When I scanned the devices this morning with smartctl via webmin I lost 8 of the 9 drives. They are howerver still in my /dev folder.

Now I sent out my logs from the first failure last night, smartctl was on the system... I dont know if ubuntu server's default smartd configuration makes it do periodic scans because I didnt change anything.

I would hate to move back to 9.10 and see this problem again.

Should I just not install smartmontools? This seems like a bad solution because now I wont be able to check the drives in advance for failures.

Have you installed LSI's linux drivers? Some people say this solves their issue.

From the logs sent out last night do you think it could be something else?

Thanks a ton,

Quoted 9 lines · Gabor Gombas
Quoted 5 lines · Andrew Dunn

does it momentarily offline the disks? like they re-appear in /dev within moments? That would be similar behavior to what I am experiencing, the disks drop from the array, but they are in /dev by the time I get a chance to see them.

Quoted 6 lines

No, either the disks need to be physically removed and re-inserted, or the machine needs to be rebooted.

Gabor

--
Andrew Dunn
http://agdunn.net

#20 lore raw
In reply to Roger Heflin
[10:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sde
[10:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdf
[10:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdg
[10:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdh
[11:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdi
[11:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdj
[11:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdk
[11:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdl
[11:0:4:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdm

So 4 drives dropped out on the second controller. But why didnt sdm go with them?

Quoted 93 lines · Roger Heflin
Quoted 77 lines · Andrew Dunn

This is kind of interesting:

storrgie@ALEXANDRIA:~$ sudo mdadm --assemble --force /dev/md0
mdadm: no devices found for /dev/md0

All of the devices are there in /dev, so I wanted to examine them:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sde1
/dev/sde1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:57:04 2009
State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 4
Spare Devices : 0
Checksum : 4ff41c5f - correct
Events : 43

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 0 8 65 0 active sync /dev/sde1

   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       0        0        4      faulty removed
   5     5       0        0        5      faulty removed
   6     6       0        0        6      faulty removed
   7     7       0        0        7      faulty removed
   8     8       8      193        8      active sync   /dev/sdm1

First raid device shows the failures....

One of the 'removed' devices:

storrgie@ALEXANDRIA:~$ sudo mdadm --examine /dev/sdi1
/dev/sdi1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : 397e0b3f:34cbe4cc:613e2239:070da8c8 (local to host
ALEXANDRIA)
  Creation Time : Fri Nov  6 07:06:34 2009
     Raid Level : raid6
  Used Dev Size : 976759808 (931.51 GiB 1000.20 GB)
     Array Size : 6837318656 (6520.58 GiB 7001.41 GB)
   Raid Devices : 9
  Total Devices : 9
Preferred Minor : 0

Update Time : Sun Nov 8 08:53:30 2009
State : active
Active Devices : 9
Working Devices : 9
Failed Devices : 0
Spare Devices : 0
Checksum : 4ff41b2f - correct
Events : 21

Chunk Size : 1024K

Number Major Minor RaidDevice State
this 4 8 129 4 active sync /dev/sdi1

Quoted 10 lines
   0     0       8       65        0      active sync   /dev/sde1
   1     1       8       81        1      active sync   /dev/sdf1
   2     2       8       97        2      active sync   /dev/sdg1
   3     3       8      113        3      active sync   /dev/sdh1
   4     4       8      129        4      active sync   /dev/sdi1
   5     5       8      145        5      active sync   /dev/sdj1
   6     6       8      161        6      active sync   /dev/sdk1
   7     7       8      177        7      active sync   /dev/sdl1
   8     8       8      193        8      active sync   /dev/sdm1

Did you check dmesg and see if there were errors on those disks?

Signature · 2 lines
Andrew Dunn
http://agdunn.net
#21 lore raw
Quoted 10 lines · Andrew Dunn
[10:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sde
[10:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdf
[10:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdg
[10:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdh
[11:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdi
[11:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdj
[11:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdk
[11:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdl
[11:0:4:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdm
Quoted 4 lines

So 4 drives dropped out on the second controller. But why didnt sdm go with them?

It is possible that by the time it got to checking the last drive that the errors had cleared up, so sdm was ok with it checked.

Is this on a port multiplier?

#22 lore raw

No multiplier, they are on a backpane though. 2 on one backpane, 3 on another... but only 2 of the 3 dropped off that one.

I looked through dmesg some more, maybe you all might see something of significance. I don't think this was around when it happened, but it might shed light onto the issue. I will continue to sift through the log.

[   19.021969] scsi10 : ioc0: LSISAS1068E B3, FwRev=011a0000h, Ports=1,
MaxQ=478, IRQ=16
[   19.061176] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id
0, phy 0, sas_addr 0x1221000000000000
[   19.063708] scsi 10:0:0:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   19.065473] sd 10:0:0:0: Attached scsi generic sg4 type 0
[   19.067322] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id
1, phy 1, sas_addr 0x1221000001000000
[   19.068074] sd 10:0:0:0: [sde] 1953523055 512-byte logical blocks:
(1.00 TB/931 GiB)
[   19.070474] scsi 10:0:1:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   19.072797] sd 10:0:1:0: Attached scsi generic sg5 type 0
[   19.074994] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id
4, phy 4, sas_addr 0x1221000004000000
[   19.076025] sd 10:0:1:0: [sdf] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   19.078091] scsi 10:0:2:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   19.080417] sd 10:0:2:0: Attached scsi generic sg6 type 0
[   19.082589] mptsas: ioc0: attaching sata device: fw_channel 0, fw_id
5, phy 5, sas_addr 0x1221000005000000
[   19.082966] sd 10:0:0:0: [sde] Write Protect is off
[   19.082970] sd 10:0:0:0: [sde] Mode Sense: 73 00 00 08
[   19.084186] sd 10:0:2:0: [sdg] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   19.086521] sd 10:0:0:0: [sde] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   19.087036] scsi 10:0:3:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   19.088389] sd 10:0:1:0: [sdf] Write Protect is off
[   19.088393] sd 10:0:1:0: [sdf] Mode Sense: 73 00 00 08
[   19.089642] sd 10:0:3:0: Attached scsi generic sg7 type 0
[   19.092400] mptsas 0000:02:00.0: PCI INT A -> GSI 16 (level, low) ->
IRQ 16
[   19.092525] mptbase: ioc1: Initiating bringup
[   19.093974] sd 10:0:3:0: [sdh] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   19.095129] sd 10:0:1:0: [sdf] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   19.101887] sd 10:0:2:0: [sdg] Write Protect is off
[   19.101891] sd 10:0:2:0: [sdg] Mode Sense: 73 00 00 08
[   19.104250] sd 10:0:2:0: [sdg] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   19.107231] sd 10:0:3:0: [sdh] Write Protect is off
[   19.107236] sd 10:0:3:0: [sdh] Mode Sense: 73 00 00 08
[   19.109398]  sde:
[   19.111301] sd 10:0:3:0: [sdh] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   19.111659]  sdf:
[   19.118664]  sdg: sdf1
[   19.122127]  sde1
[   19.126192]  sdh: sdg1
[   19.137786] sd 10:0:1:0: [sdf] Attached SCSI disk
[   19.143743]  sdh1
[   19.146360] sd 10:0:0:0: [sde] Attached SCSI disk
[   19.148589] sd 10:0:2:0: [sdg] Attached SCSI disk
[   19.158613] sd 10:0:3:0: [sdh] Attached SCSI disk
[   20.780022] ioc1: LSISAS1068E B3: Capabilities={Initiator}
[   20.780035] mptsas 0000:02:00.0: setting latency timer to 64
[   30.971934] scsi11 : ioc1: LSISAS1068E B3, FwRev=011a0000h, Ports=1,
MaxQ=478, IRQ=16
[   31.012437] mptsas: ioc1: attaching sata device: fw_channel 0, fw_id
0, phy 0, sas_addr 0x1221000000000000
[   31.015009] scsi 11:0:0:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   31.016755] sd 11:0:0:0: Attached scsi generic sg8 type 0
[   31.018603] mptsas: ioc1: attaching sata device: fw_channel 0, fw_id
1, phy 1, sas_addr 0x1221000001000000
[   31.019358] sd 11:0:0:0: [sdi] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.021753] scsi 11:0:1:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   31.024075] sd 11:0:1:0: Attached scsi generic sg9 type 0
[   31.026273] mptsas: ioc1: attaching sata device: fw_channel 0, fw_id
4, phy 4, sas_addr 0x1221000004000000
[   31.027302] sd 11:0:1:0: [sdj] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.029693] scsi 11:0:2:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   31.032004] sd 11:0:2:0: Attached scsi generic sg10 type 0
[   31.032233] sd 11:0:0:0: [sdi] Write Protect is off
[   31.032235] sd 11:0:0:0: [sdi] Mode Sense: 73 00 00 08
[   31.034133] mptsas: ioc1: attaching sata device: fw_channel 0, fw_id
5, phy 5, sas_addr 0x1221000005000000
[   31.035571] sd 11:0:2:0: [sdk] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.037483] sd 11:0:0:0: [sdi] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.038793] scsi 11:0:3:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   31.041160] sd 11:0:3:0: Attached scsi generic sg11 type 0
[   31.043506] mptsas: ioc1: attaching sata device: fw_channel 0, fw_id
6, phy 6, sas_addr 0x1221000006000000
[   31.043884] sd 11:0:1:0: [sdj] Write Protect is off
[   31.043887] sd 11:0:1:0: [sdj] Mode Sense: 73 00 00 08
[   31.046683] sd 11:0:3:0: [sdl] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.047038] sd 11:0:1:0: [sdj] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.050845] scsi 11:0:4:0: Direct-Access     ATA      WDC
WD1001FALS-0 0K05 PQ: 0 ANSI: 5
[   31.054206] sd 11:0:4:0: Attached scsi generic sg12 type 0
[   31.056125] sd 11:0:2:0: [sdk] Write Protect is off
[   31.056129] sd 11:0:2:0: [sdk] Mode Sense: 73 00 00 08
[   31.059805] sd 11:0:4:0: [sdm] 1953525168 512-byte logical blocks:
(1.00 TB/931 GiB)
[   31.061019] sd 11:0:2:0: [sdk] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.065705] sd 11:0:3:0: [sdl] Write Protect is off
[   31.065710] sd 11:0:3:0: [sdl] Mode Sense: 73 00 00 08
[   31.066991]  sdi:
[   31.069131]  sdj:
[   31.070087] sd 11:0:3:0: [sdl] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.073259] sd 11:0:4:0: [sdm] Write Protect is off
[   31.073262] sd 11:0:4:0: [sdm] Mode Sense: 73 00 00 08
[   31.074045]  sdj1
[   31.075719]  sdi1
[   31.077424] sd 11:0:4:0: [sdm] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[   31.083141]  sdk:
[   31.090760]  sdl: sdk1
[   31.099798]  sdm: sdl1
[   31.115614]  sdm1
[   31.122247] sd 11:0:1:0: [sdj] Attached SCSI disk
[   31.124713] sd 11:0:0:0: [sdi] Attached SCSI disk
[   31.131908] sd 11:0:2:0: [sdk] Attached SCSI disk
[   31.141444] md: bind<sdj1>
[   31.143383] sd 11:0:3:0: [sdl] Attached SCSI disk
[   31.147407] md: bind<sdi1>
[   31.153910] sd 11:0:4:0: [sdm] Attached SCSI disk
[   31.159932] md: bind<sdl1>
[   31.176695] md: bind<sdm1>
[   31.265544] md: bind<sde1>
[   31.354001] md: bind<sdk1>
[   31.467249] md: bind<sdh1>
[   31.476153] md: bind<sdg1>
[   31.670444] md: bind<sdf1>
[   31.672643] md: kicking non-fresh sdk1 from array!
[   31.672652] md: unbind<sdk1>
[   31.711286] md: export_rdev(sdk1)
[   31.712356] raid5: device sdf1 operational as raid disk 1
[   31.712358] raid5: device sdg1 operational as raid disk 2
[   31.712360] raid5: device sdh1 operational as raid disk 3
[   31.712362] raid5: device sde1 operational as raid disk 0
[   31.712363] raid5: device sdm1 operational as raid disk 8
[   31.712365] raid5: device sdl1 operational as raid disk 7
[   31.712366] raid5: device sdi1 operational as raid disk 4
[   31.712368] raid5: device sdj1 operational as raid disk 5
[   31.712962] raid5: allocated 9540kB for md0
[   31.713094] raid5: raid level 6 set md0 active with 8 out of 9

devices, algorithm 2

Quoted 23 lines · Roger Heflin
Quoted 10 lines · Andrew Dunn
[10:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sde
[10:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdf
[10:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdg
[10:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdh
[11:0:0:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdi
[11:0:1:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdj
[11:0:2:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdk
[11:0:3:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdl
[11:0:4:0]   disk    ATA      WDC WD1001FALS-0 0K05  /dev/sdm
Quoted 4 lines

So 4 drives dropped out on the second controller. But why didnt sdm go with them?

It is possible that by the time it got to checking the last drive that the errors had cleared up, so sdm was ok with it checked.

Is this on a port multiplier?

Signature · 2 lines
Andrew Dunn
http://agdunn.net