KDying disk

[Scott Long]

Olivier Nicole wrote:

> Hi,
> 
> How to read this error message? It happens more and more lately :((
> 
> This machine is running 5.4 with one hard disk SCSI 72 MB
> 
> TIA
> 
> Olivier
> 
> Nov 22 17:42:50 ufo kernel: Copied 18 bytes of sense data offset 12: 0xf1 0x0 0x3 0x0 0x51 0x3b 0x9f 0xa 0x0 0x0 0x0 0x0 0xc 0x0 0xd3 0x80 0x0 0x18
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): WRITE(10). CDB: 2a 0 0 51 ac 7f 0 0 4 0 
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): CAM Status: SCSI Status Error
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): SCSI Status: Check Condition
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): Deferred Error: MEDIUM ERROR info:513b9f asc:c,0
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): Write error field replaceable unit: d3 actual retry count: 24
> Nov 22 17:42:50 ufo kernel: (da0:ahd1:0:0:0): Retrying Command (per Sense Data)
> N

This means that you're starting to get failing sectors.  The disk can 
automatically remap them if you are writing to them, but can't do 
anything if the failure occurs during a read operation.  Best bet is to
back up your data and look into replacing the drive.

Scott