Odd RAID failure
Hi guys,
I have a little storage box. It has an IDE with the OS on (Debian
Lenny) and four SATA discs in a software RAID5. Every now and then,
one disc (sdb) fails. The first time it happened, I replaced it, but
the replacement does the same. When this happens, I fail it, remove it,
add it, it rebuilds, and run absolutely fine for several more month.
The second line from the log is what I'm wondering about. Is this
simply a faulty cable or is there more to this?
Aug 12 19:35:34 store kernel: [2708448.313179] res
40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
Aug 12 19:35:34 store kernel: [2708448.313230] ata3: hard resetting link
Aug 12 19:35:34 store kernel: [2708448.832939] ata3: SATA link up 1.5
Gbps (SStatus 113 SControl 300)
Aug 12 19:35:34 store kernel: [2708448.884883] ata3.00: configured for
UDMA/133
Aug 12 19:35:34 store kernel: [2708448.884904] ata3: EH complete
Aug 12 19:35:34 store kernel: [2708448.884883] sd 2:0:0:0: [sdb]
976773168 512-byte hardware sectors (500108 MB)
Aug 12 19:35:34 store kernel: [2708448.884905] sd 2:0:0:0: [sdb] Write
Protect is off
Aug 12 19:35:34 store kernel: [2708448.884933] sd 2:0:0:0: [sdb] Write
cache: enabled, read cache: enabled, doesn't support DPO or FUA
Aug 12 19:35:34 store kernel: [2708448.898473] md: super_written gets
error=-5, uptodate=0
Aug 12 19:35:34 store kernel: [2708448.898478] raid5: Operation
continuing on 3 devices.
Aug 12 19:35:35 store kernel: [2708449.304654] RAID5 conf printout:
Aug 12 19:35:35 store kernel: [2708449.304654] --- rd:4 wd:3
Aug 12 19:35:35 store kernel: [2708449.304654] disk 0, o:1, dev:sda1
Aug 12 19:35:35 store kernel: [2708449.304654] disk 1, o:1, dev:sdc1
Aug 12 19:35:35 store kernel: [2708449.304654] disk 2, o:1, dev:sdd1
Aug 12 19:35:35 store kernel: [2708449.304654] disk 3, o:0, dev:sdb1
Aug 12 19:35:35 store kernel: [2708449.312669] RAID5 conf printout:
Aug 12 19:35:35 store kernel: [2708449.312676] --- rd:4 wd:3
Aug 12 19:35:35 store kernel: [2708449.312678] disk 0, o:1, dev:sda1
Aug 12 19:35:35 store kernel: [2708449.312680] disk 1, o:1, dev:sdc1
Aug 12 19:35:35 store kernel: [2708449.312681] disk 2, o:1, dev:sdd1
thanks
--kj
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