On Apr 18, 2007, at 12:37 PM, Doug Poland wrote:
I just used the "Drive Fitness Test" for IBM ATA drives on a
particular
disk and it finished without detecting errors. However, I see
messages
like this:
Apr 16 22:51:44 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC
error (retrying request) LBA=1904935
Apr 16 22:52:02 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC
error (retrying request) LBA=8029031
Apr 16 23:35:30 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC
error (retrying request) LBA=2269287
Apr 16 23:37:22 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC
error (retrying request) LBA=3612007
Apr 16 23:48:17 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC
error (retrying request) LBA=1932123
Apr 17 21:12:25 seth kernel: ad3: FAILURE - SMART
status=51<READY,DSC,ERROR> error=4<ABORTED> LBA=12734209
Apr 17 21:12:25 seth kernel: ad3: FAILURE - SMART
status=51<READY,DSC,ERROR> error=4<ABORTED> LBA=12734214
in /var/log/messages.
Do the kernel messages indicate a potential problem with this drive?
They seem to suggest more of a cabling problem or communications
problem between the drive and motherboard than a problem within the
drive itself. It could also indicate a problem with the ATA driver
against your particular motherboard/chipset-- but without a dmesg or
some hardware details, we can't do better than guess.
Whom should I believe, FreeBSD or the disk diagnostics tool?
Both.
--
-Chuck
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