Hi,
While on vacation I had one SATA port/cable fail, and then four hours
later a second one fail. After fixing/moving the SATA ports, I can
reboot and all drives seem to be OK now, but when assembled it won't
recognize the filesystem. After futzing around with assemble options
like --force and disk order I couldn't get it to work.
Appreciate if someone can provide pointers on how to proceed. Here's
the latest state of the array. My log shows that /dev/sdc1 failed first
and I'm using mdadm v2.5.6 on Ubuntu Linux.
Thanks much,
Chris
mdadm -Av /dev/md0
mdadm: looking for devices for /dev/md0
mdadm: /dev/sda1 is identified as a member of /dev/md0, slot 0.
mdadm: /dev/sdb1 is identified as a member of /dev/md0, slot 1.
mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 3.
mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 2.
mdadm: added /dev/sdb1 to /dev/md0 as 1
mdadm: added /dev/sdd1 to /dev/md0 as 2
mdadm: added /dev/sdc1 to /dev/md0 as 3
mdadm: added /dev/sda1 to /dev/md0 as 0
mdadm: /dev/md0 has been started with 3 drives (out of 4).
mdadm -E /dev/sd[a-d]1
/dev/sda1:
Magic : a92b4efc
Version : 00.90.03
UUID : bc74c21c:9655c1c6:ba6cc37a:df870496
Creation Time : Sun Nov 5 14:25:01 2006
Raid Level : raid5
Device Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 1465151808 (1397.28 GiB 1500.32 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Nov 7 12:02:50 2007
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 1
Spare Devices : 0
Checksum : 401c33e0 - correct
Events : 0.4880374
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 0 254 0 0 active sync /dev/mapper/sda1
0 0 254 0 0 active sync /dev/mapper/sda1
1 1 254 1 1 active sync /dev/mapper/sdb1
2 2 254 2 2 active sync /dev/mapper/sdd1
3 3 0 0 3 faulty removed
/dev/sdb1:
Magic : a92b4efc
Version : 00.90.03
UUID : bc74c21c:9655c1c6:ba6cc37a:df870496
Creation Time : Sun Nov 5 14:25:01 2006
Raid Level : raid5
Device Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 1465151808 (1397.28 GiB 1500.32 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Nov 7 12:02:50 2007
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 1
Spare Devices : 0
Checksum : 401c33e3 - correct
Events : 0.4880374
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 1 254 1 1 active sync /dev/mapper/sdb1
0 0 254 0 0 active sync /dev/mapper/sda1
1 1 254 1 1 active sync /dev/mapper/sdb1
2 2 254 2 2 active sync /dev/mapper/sdd1
3 3 0 0 3 faulty removed
/dev/sdc1:
Magic : a92b4efc
Version : 00.90.03
UUID : bc74c21c:9655c1c6:ba6cc37a:df870496
Creation Time : Sun Nov 5 14:25:01 2006
Raid Level : raid5
Device Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 1465151808 (1397.28 GiB 1500.32 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Mon Nov 5 13:31:00 2007
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 3fced5a3 - correct
Events : 0.4857597
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 3 254 3 3 active sync /dev/mapper/sdc1
0 0 254 0 0 active sync /dev/mapper/sda1
1 1 254 1 1 active sync /dev/mapper/sdb1
2 2 254 2 2 active sync /dev/mapper/sdd1
3 3 254 3 3 active sync /dev/mapper/sdc1
/dev/sdd1:
Magic : a92b4efc
Version : 00.90.03
UUID : bc74c21c:9655c1c6:ba6cc37a:df870496
Creation Time : Sun Nov 5 14:25:01 2006
Raid Level : raid5
Device Size : 488383936 (465.76 GiB 500.11 GB)
Array Size : 1465151808 (1397.28 GiB 1500.32 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Update Time : Wed Nov 7 12:02:50 2007
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 1
Spare Devices : 0
Checksum : 401c33e6 - correct
Events : 0.4880374
Layout : left-symmetric
Chunk Size : 64K
Number Major Minor RaidDevice State
this 2 254 2 2 active sync /dev/mapper/sdd1
0 0 254 0 0 active sync /dev/mapper/sda1
1 1 254 1 1 active sync /dev/mapper/sdb1
2 2 254 2 2 active sync /dev/mapper/sdd1
3 3 0 0 3 faulty removed
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