On Jan 16, 2005, at 3:25 PM, Mike Hardy wrote:
Gerd Knops wrote:Hello all,
One of the dreaded Maxtor SATA drives in my RAID5 failed, after just 3 months of light use. Anyhow I neither have the disk capacity nor the money to buy it to make a backup. To make sure I do it correctly, could you folks please double-check my intended course of action? I would really appreciate that.
Failed how? I have tons and tons of Maxtor drives in service, and only one actually had a complete failure (verified by their utility, which is present on some bootable CD I got called "UltimateBootDisk").
Most of the time its just a bad sector causing a single unreadable sector error, which causes the RAID code to kick the drive out. You can see what the problem is by using the SMART utilities (http://smartmontools.sf.net) - run a long self test 'smartctl -t long /dev/sda' to verify things.
Seems to be a whole slew of bad sectors, here is what the log says:
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 3f 00 00 08 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957119
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 40 00 00 07 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957120
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 41 00 00 06 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957121
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 42 00 00 05 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957122
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 43 00 00 04 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957123
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 44 00 00 03 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957124
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 45 00 00 02 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957125
scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 15 65 40 46 00 00 01 00
Current sda: sense key Medium Error
Additional sense: Unrecovered read error - auto reallocate failed
end_request: I/O error, dev sda, sector 358957126
raid5: Disk failure on sda1, disabling device. Operation continuing on 2 devices
That looks to me to be more severe than a single bad sector.
Thanks much for all your other remarks, cut to keep this post reasonably short. Much appreciated!
Gerd
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