Hi
After 20 months trouble-free Intel IMSM RAID, I had to do a hard reset
and the array has failed to start. I don’t know if the failed RAID
was the cause of the problems before the reset. The system won’t boot
because everything is on the RAID array. Booting from a live Fedora
USB shows no sign that the discs are broken and I was able to copy 1
GB off each disc with dd. I hope someone can help me to rescue the
array.
It is a 4 x 1 TB disc RAID 5 array. The system was running Archlinux
and I had patched it a day or 2 before for the first time in a few
months, thought it had been rebooted more than once afterwards without
incident.
The Intel oROM says disc 2 is “Offline Member” and 3 is “Failed Disk”.
-----------------------------------------------------------------------
Intel(R) Rapid Storage Technology - Option ROM - 11.6.0.1702
RAID Volumes:
ID Name Level Strip Size Status Bootable
O md0 RAID5(Parity) 128KB 2.6TB Failed No
1 mdl RAID5(Parity) 128KB 94.5GB Failed No
Physical Devices:
ID Device Model Serial # Size Type/Status(Vol ID)
O WDC WD10EZEK-00K WD-ACC1S5684189 931.5GB Member Disk(0,1)
1 SAMSUNG HD103UJ S13PJDAS608384 931.5GB Member Disk(O,1)
2 SAMSUNG HD103SJ SZ46J9GZC04Z67 931.5GB Offline Member
3 SAMSUNG HD103UJ S13PJDAS608386 931.5GB Unknown Disk
4 WDC WD10EZEK-08M WD-ACC3F1681668 931.5GB Non-RAID Disk
-----------------------------------------------------------------------
The 2 RAID volumes were both spread across all 4 discs. This is how
it looks now:
# mdadm -D /dev/md/imsm0
/dev/md/imsm0:
Version : imsm
Raid Level : container
Total Devices : 1
Working Devices : 1
UUID : 76cff3f5:1a3a7a83:49fc86a8:84cf6604
Member Arrays :
Number Major Minor RaidDevice
0 8 48 - /dev/sdd
#
# mdadm -D /dev/md/imsm1
/dev/md/imsm1:
Version : imsm
Raid Level : container
Total Devices : 3
Working Devices : 3
UUID : e8286680:de9642f4:04200a4a:acbdb566
Member Arrays :
Number Major Minor RaidDevice
0 8 16 - /dev/sdb
1 8 32 - /dev/sdc
2 8 0 - /dev/sda
#
# mdadm --detail-platform
Platform : Intel(R) Matrix Storage Manager
Version : 11.6.0.1702
RAID Levels : raid0 raid1 raid10 raid5
Chunk Sizes : 4k 8k 16k 32k 64k 128k
2TB volumes : supported
2TB disks : supported
Max Disks : 6
Max Volumes : 2 per array, 4 per controller
I/O Controller : /sys/devices/pci0000:00/0000:00:1f.2 (SATA)
#
# mdadm --examine /dev/sd[abcd]
/dev/sda:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.3.00
Orig Family : d12e9b21
Family : d12e9b21
Generation : 00695bbd
Attributes : All supported
UUID : e8286680:de9642f4:04200a4a:acbdb566
Checksum : 8f6fe1cb correct
MPB Sectors : 2
Disks : 4
RAID Devices : 2
Disk01 Serial : WD-WCC1S5684189
State : active
Id : 00000000
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
[md0]:
UUID : d5bf7ab7:2cda417d:f0c6542f:c77d9289
RAID Level : 5
Members : 4
Slots : [_U_U]
Failed disk : 2
This Slot : 1
Array Size : 5662310400 (2700.00 GiB 2899.10 GB)
Per Dev Size : 1887436800 (900.00 GiB 966.37 GB)
Sector Offset : 0
Num Stripes : 7372800
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : failed
Dirty State : clean
[md1]:
UUID : 26671da2:0d23f085:3d12dbbe:f63aad5a
RAID Level : 5
Members : 4
Slots : [__UU]
Failed disk : 0
This Slot : 2
Array Size : 198232064 (94.52 GiB 101.49 GB)
Per Dev Size : 66077952 (31.51 GiB 33.83 GB)
Sector Offset : 1887440896
Num Stripes : 258117
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : failed
Dirty State : clean
Disk00 Serial : PJDWS608386:0:0
State : active
Id : ffffffff
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk02 Serial : 6J9GZC04267:0:0
State : active failed
Id : ffffffff
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk03 Serial : S13PJDWS608384
State : active
Id : 00000001
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
/dev/sdb:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.3.00
Orig Family : d12e9b21
Family : d12e9b21
Generation : 00695bbd
Attributes : All supported
UUID : e8286680:de9642f4:04200a4a:acbdb566
Checksum : 8f6fe1cb correct
MPB Sectors : 2
Disks : 4
RAID Devices : 2
Disk03 Serial : S13PJDWS608384
State : active
Id : 00000001
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
[md0]:
UUID : d5bf7ab7:2cda417d:f0c6542f:c77d9289
RAID Level : 5
Members : 4
Slots : [_U_U]
Failed disk : 2
This Slot : 3
Array Size : 5662310400 (2700.00 GiB 2899.10 GB)
Per Dev Size : 1887436800 (900.00 GiB 966.37 GB)
Sector Offset : 0
Num Stripes : 7372800
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : failed
Dirty State : clean
[md1]:
UUID : 26671da2:0d23f085:3d12dbbe:f63aad5a
RAID Level : 5
Members : 4
Slots : [__UU]
Failed disk : 0
This Slot : 3
Array Size : 198232064 (94.52 GiB 101.49 GB)
Per Dev Size : 66077952 (31.51 GiB 33.83 GB)
Sector Offset : 1887440896
Num Stripes : 258117
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : failed
Dirty State : clean
Disk00 Serial : PJDWS608386:0:0
State : active
Id : ffffffff
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk01 Serial : WD-WCC1S5684189
State : active
Id : 00000000
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk02 Serial : 6J9GZC04267:0:0
State : active failed
Id : ffffffff
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
/dev/sdc:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.3.00
Orig Family : d12e9b21
Family : d12e9b21
Generation : 00695b88
Attributes : All supported
UUID : e8286680:de9642f4:04200a4a:acbdb566
Checksum : a72daa29 correct
MPB Sectors : 2
Disks : 4
RAID Devices : 2
Disk02 Serial : S246J9GZC04267
State : active
Id : 00000002
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
[md0]:
UUID : d5bf7ab7:2cda417d:f0c6542f:c77d9289
RAID Level : 5
Members : 4
Slots : [UUUU]
Failed disk : none
This Slot : 2
Array Size : 5662310400 (2700.00 GiB 2899.10 GB)
Per Dev Size : 1887436800 (900.00 GiB 966.37 GB)
Sector Offset : 0
Num Stripes : 7372800
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : dirty
[md1]:
UUID : 26671da2:0d23f085:3d12dbbe:f63aad5a
RAID Level : 5
Members : 4
Slots : [UUUU]
Failed disk : none
This Slot : 0
Array Size : 198232064 (94.52 GiB 101.49 GB)
Per Dev Size : 66077952 (31.51 GiB 33.83 GB)
Sector Offset : 1887440896
Num Stripes : 258117
Chunk Size : 128 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
Disk00 Serial : S13PJDWS608386
State : active
Id : 00000003
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk01 Serial : WD-WCC1S5684189
State : active
Id : 00000000
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
Disk03 Serial : S13PJDWS608384
State : active
Id : 00000001
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
/dev/sdd:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.0.00
Orig Family : c7e42747
Family : c7e42747
Generation : 00000000
Attributes : All supported
UUID : 76cff3f5:1a3a7a83:49fc86a8:84cf6604
Checksum : 4f820c2e correct
MPB Sectors : 1
Disks : 1
RAID Devices : 0
Disk00 Serial : S13PJDWS608386
State :
Id : 00000003
Usable Size : 1953518862 (931.51 GiB 1000.20 GB)
#
Thanks.
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