SCSI disk error

SCSI disk error

[Alex Adriaanse]

Hi there,

I got the following error message last night on one of my SCSI disks:

SCSI disk error : host 0 channel 0 id 6 lun 0 return code = 100ff
 I/O error: dev 08:11, sector 38584
raid1: Disk failure on scsi/host0/bus0/target6/lun0/part1, disabling device.
        Operation continuing on 1 devices

Is there any way to look up what the return code means?  By the way,
badblocks doesn't seem to return any bad blocks, and I can still access the
disk (including the first partition) just fine.  I found documentation for
my hard drive at
http://www.fcpa.fujitsu.com/download/download/hard-drives/man10krpm-scsi-man
ual.pdf where it has sense data information on page 115, but I'm not sure if
that's the right place to look.

I'm running kernel 2.4.19, and have a Tekram DC-390U3W (SYM53C8XX_2 driver)
SCSI controller with two Fujitsu MAN3367MP drives.

Thanks in advance.

Best regards,

Alex

Re: SCSI disk error

[James Bottomley]

"Alex Adriaanse" <alex_a@caltech.edu> said:
> I got the following error message last night on one of my SCSI disks:
> SCSI disk error : host 0 channel 0 id 6 lun 0 return code = 100ff
>  I/O error: dev 08:11, sector 38584

That error is a DID_NO_CONNECT.  For the symbios driver that means a selection 
timeout, I think.

> Is there any way to look up what the return code means?  By the way,
> badblocks doesn't seem to return any bad blocks, and I can still
> access the disk (including the first partition) just fine.  I found
> documentation for my hard drive at h

They go in 8 bits from LSB to MSB: status byte, message byte, host byte, 
driver byte.  The first two (status and message) are the SCSI return codes 
from the device.  The latter two are set by the driver (that's where the 
DID_NO_CONNECT is).  See drivers/scsi/scsi.h

James Bottomley