topic error on dmesg in Operating System - HP-UX

error on dmesg

remer — Tue, 16 Oct 2007 20:22:06 GMT

hi hope someone can help me.

how can i see the details of this alarm found on dmesg (syslog)?

what is the possible cause of this alarm?

"SCSI: Unexpected Disconnect -- lbolt: 47866821, dev: cb0df002, io_id: d0000b9"

thanks.

Re: error on dmesg

A. Clay Stephenson — Tue, 16 Oct 2007 20:59:55 GMT

The lbolt value means very little; it's simply the number of clock ticks since boot. The device id is key:

The first two hex digits (cb) indicate the major device. 0xCB = 203 (dec). Do an lsdev and see what device corresponds to this value. (Probably a tape drive, possibly a robotics device but lsdev will identify it on your particular system).

The next two hex digits (0d) indicate the controller instance, c13.

The next hex digit (f) indevicate the SCSI ID (or target) t15. The next hex digit (0) indicates the LUN (d0). The last two hex digits (02) are device dependent. If 203 is a tape device major number then the
device with the problem is /dev/rmt/c13t15d0.

Re: error on dmesg

remer — Tue, 16 Oct 2007 21:42:45 GMT

thanks
upon checking cb (first two hexa digit) is a 203 which upon checking using lsdev is a:

# lsdev |grep 203
203 -1 sctl ctl
#

using ioscan.
# ioscan -nfC ctl
Class I H/W Path Driver S/W State H/W Type Description
=========================================================================
ctl 0 0/0/0/2/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c0t7d0
ctl 1 0/0/0/2/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c1t7d0
ctl 2 0/0/0/3/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c2t7d0
ctl 3 0/0/0/3/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c3t7d0
ctl 12 0/0/6/0/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c14t7d0
ctl 11 0/0/12/0/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c13t7d0
ctl 4 1/0/0/2/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c4t7d0
ctl 5 1/0/0/2/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c5t7d0
ctl 6 1/0/0/3/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c6t7d0
ctl 7 1/0/0/3/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c7t7d0
ctl 21 1/0/2/0/0.2.0.255.0.1.0 sctl CLAIMED DEVICE EMC SYMMETRIX
/dev/rscsi/c30t1d0
ctl 22 1/0/14/0/0.1.0.255.0.1.0 sctl CLAIMED DEVICE EMC SYMMETRIX
/dev/rscsi/c31t1d0
#

so i can say the problem is a third party device?

thanks.

Re: error on dmesg

remer — Tue, 16 Oct 2007 21:47:22 GMT

btw, what does the lbolt number mean? and the io_id mean? do i need to convert it to decimal to get something on it?

thanks again...

Re: error on dmesg

A. Clay Stephenson — Tue, 16 Oct 2007 21:48:36 GMT

I would do this:

ls -l /dev/*/c13t15d0* and see what devices are displayed. sctl is the SCSI pass-thru driver and is very commonly used for robotic (e.g. tape library) devices.

Re: error on dmesg

remer — Tue, 16 Oct 2007 22:07:35 GMT

i can't find any devices.
do you that's was the reason of this alarm?