I have got this message: vmunix: SCSI: Request Timeout; but I haven´t got the disk.

[Juan Manuel López]

Hi all.
I have this message on syslog.log file:
vmunix: SCSI: Request Timeout; Abort -- lbolt: 785439230, dev: cb030000, io_id: 303a5b4

So dev: cb030000 mean c3t0d0, and I haven´t got that disk...Attached there is an output of ioscan -funC disk.
Anyboby knows the reason why ?
Thanks in advance.

Juanm

[T G Manikandan]

cb030000
cb(hex) = 203(decimal)

Just do a lsdev

203 is sctl.

check for scsi cabling.make sure that the termination is OK.

[Juan Manuel López]

You mean my disk c2t0d3.
this is the " strings /etc/lvmtab " output, and there is not this disk on my machine:
/dev/vg00
/dev/dsk/c1t2d0
/dev/dsk/c2t2d0
/dev/vg01fc
/dev/dsk/c4t0d1
/dev/dsk/c4t2d0
/dev/dsk/c4t2d1
/dev/dsk/c4t2d3
/dev/vgstu02
/dev/dsk/c4t1d7
/dev/dsk/c6t10d0
/dev/dsk/c6t10d1
/dev/dsk/c4t1d2
/dev/vggenesys
/dev/dsk/c4t1d0
/dev/vgspu04
/dev/dsk/c6t5d0
/dev/dsk/c6t5d1
/dev/dsk/c6t5d2
/dev/dsk/c6t5d3
/dev/dsk/c6t5d4
/dev/dsk/c6t5d5
/dev/dsk/c6t5d6
/dev/dsk/c6t5d7
/dev/dsk/c6t6d0
/dev/dsk/c6t6d1

[Dietmar Konermann]

Well, the message points to SCSI bus 3... please have a look at the results of:

# ioscan -fd sctl -I 3
# ioscan -fC ext_bus -I 3

Maybe some unused, but unterminated SCSI bus?

Best regards...
Dietmar.

[Juan Manuel López]

this is the output:
MACHINE:/root#ioscan -fd sctl -I 3
Class I H/W Path Driver S/W State H/W Type Description
====================================================================
ctl 3 0/0/2/1.7.0 sctl CLAIMED DEVICE Initiator
MACHINE:/root#ioscan -fC ext_bus -I 3
Class I H/W Path Driver S/W State H/W Type Description
=================================================================
ext_bus 3 0/0/2/1 c720 CLAIMED INTERFACE SCSI C875 Ultra Wide Single-Ended


this is the hardware on this address:

ext_bus 2 0/0/2/0 c720 CLAIMED INTERFACE SCSI C875 Ultra Wide Single-Ended
target 4 0/0/2/0.2 tgt CLAIMED DEVICE
disk 1 0/0/2/0.2.0 sdisk CLAIMED DEVICE SEAGATE ST318404LC
target 5 0/0/2/0.7 tgt CLAIMED DEVICE
ctl 2 0/0/2/0.7.0 sctl CLAIMED DEVICE Initiator
ext_bus 3 0/0/2/1 c720 CLAIMED INTERFACE SCSI C875 Ultra Wide Single-Ended
target 6 0/0/2/1.0 tgt CLAIMED DEVICE
tape 0 0/0/2/1.0.0 stape CLAIMED DEVICE HP C1537A
target 7 0/0/2/1.7 tgt CLAIMED DEVICE
ctl 3 0/0/2/1.7.0 sctl CLAIMED DEVICE Initiator


I still do not understand it.

[Dietmar Konermann]

Juanm,

the specification "dev: cb030000" points to this tape device:

tape 0 0/0/2/1.0.0 stape CLAIMED DEVICE HP C1537A

cb -> 203 -> sctl driver talking to:
03 -> c3 -> ext_bus 3
00 -> t0d0 -> target 0, lun 0
00 -> reserved

ext_bus 3 0/0/2/1
tape 0 0/0/2/1.0.0 -> target 0, lun 0

So essentially an I/O to this DDS drive timed out and has been aborted by the initiator.

Best regards...
Dietmar.

[Juan Manuel López]

Many thanks to all for your help.
Dietmar. The Tape was dirty and have cleaned las week. So I do not know why there is this message on syslog.log. Maybe the Tape has any problem ?
I pass diagnostics with mstm and everything looks fine. I do not know what can be happening.
Any subgest ?

Juanma.

[Dietmar Konermann]

Well, this kind of symptoms are likely to be caused by hardware problems... especially controllers, cable, terminators are suspective. Depending on how often this happens I would log a hardware case with your local response center.

Best regards...
Dietmar.

[Daniel Tan_3]

how do you guys find out the major and minor numbers?
i remember there was a single line command to print out the major or minor number of devices but i kind of forgot how to do it anymore....i ony can remember that there is printf in it...