diskinfo: can't open /dev/rdsk/cXtYdZ: Device busy

[DKC]

Hi Experts,

# diskinfo /dev/rdsk/c3t2d0
diskinfo: can't open /dev/rdsk/c3t2d0: Device busy

# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
disk 2 0/1/1/1.2.0 sdisk CLAIMED DEVICE HP 73.4GST373453LC
/dev/dsk/c3t2d0 /dev/rdsk/c3t2d0

===========================
scsi

ext_bus 3 0/1/1/1 mpt CLAIMED INTERFACE SCSI Ultra320


# model
ia64 hp server rx2600

# uname -a
HP-UX rx26-208 B.11.31 U ia64 4008097843 unlimited-user license

1. Not a part of lvmtab
2. Restarted the system

=============================
# sar -d 1 3

HP-UX rx26-208 B.11.31 U ia64 08/05/09

03:28:31 device %busy avque r+w/s blks/s avwait avserv
03:28:32
03:28:33 disk36 1.00 0.50 5 64 0.00 3.91
03:28:34

Average disk36 0.33 0.50 2 21 0.00 3.91
[rx26-208]/
===============================

disk 36 is a different disk


Your answers are highly appreciated.

Regards,
Devkant

[Torsten. · Accepted solution]

Any related message in syslog? What does "mptconfig" tell you?

[Basheer_2]

Hello Devkant,

what does this say
pvdisplay -v /dev/rdsk/c3t2d0

if this is being used by some other process

fuser -u /oracle/data1 -- list processes using a specific file

fuser -cu /oracle -- list processes using a file on /oracle

fuser -u /dev/vgora/lvol1 -- list process used on /dev/vgora/lvol1

[Lijeesh N G_1]

Hi Devkant,

Welcome to ITRC!!!!!!

I think it is a disk problem.

try with following,

#dd if=/dev/rdsk/c3t2d0 of=/dev/null bs=1024 count=50 <<==check is there any output
#rmsf -H
#ioscan -fnC disk <<==Check is it CLAIMED or not.
#insf -e -H

If still,
Check with SAM,
#sam
>go to disk and file system>disks>check for /dev/dsk/c3t2d0

Reagrds,
LIJEESH N G

[DKC]

Hi,

Attached the out puts.

SMH is showing 0GB and mptconfig shows that there is no target. But why at all the ioconfig is showing it prpperly?

Regards,
Sooraj

[R.K. #]

Hi,

What are the results of "dd" and "rmsf/insf"?

If you have physical access to the disk, can you see any blinking activity on the disk while 'dd' is running.

Try running 'dd' on entire disk.

Else chances are for a bad disk.