topic Re: Devices are in SCAN state in Operating System - HP-UX

Devices are in SCAN state

PVR — Wed, 09 Jun 2010 01:33:13 GMT

We have a HP-UX 11.0 system. When I execute ioscan -fn, system is hanging. Also
tape device is hanging. The output of ioscan -fu is given below;

What is the meaning of SCAN state ? When I tried execting insf, I got the below error;

vuh273 $ insf -eH 10/12/5.0.0
insf: Unable to lock /etc/ioconfig - : Cannot lock /etc/ioconfig file.
insf: Installing special files for stape instance 0 address 10/12/5.0.0

ioscan -fu
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
ext_bus 0 10/0 c720 CLAIMED INTERFACE GSC built-in Fast/Wide SCSI Interface
disk 0 10/0.1.0 sdisk CLAIMED DEVICE SEAGATE ST15150W
disk 1 10/0.2.0 sdisk CLAIMED DEVICE SEAGATE ST15150W
disk 2 10/0.3.0 sdisk CLAIMED DEVICE SEAGATE ST32550W
disk 3 10/0.4.0 sdisk CLAIMED DEVICE SEAGATE ST32272WC
disk 4 10/0.5.0 sdisk CLAIMED DEVICE SEAGATE ST32550W
disk 5 10/0.6.0 sdisk CLAIMED DEVICE SEAGATE ST31230W
ctl 0 10/0.7.0 sctl CLAIMED DEVICE Initiator
tty 0 10/4/0 mux2 CLAIMED INTERFACE MUX
ext_bus 1 10/8 c720 CLAIMED INTERFACE GSC add-on Fast/Wide SCSI Interface
disk 6 10/8.2.0 sdisk CLAIMED DEVICE IBM DGHS09Y
disk 7 10/8.3.0 sdisk CLAIMED DEVICE IBM DGHS09Y
disk 8 10/8.4.0 sdisk CLAIMED DEVICE SEAGATE ST32550W
disk 9 10/8.5.0 sdisk CLAIMED DEVICE SEAGATE ST32550W
disk 10 10/8.6.0 sdisk CLAIMED DEVICE SEAGATE ST32550W
ctl 1 10/8.7.0 sctl CLAIMED DEVICE Initiator
ext_bus 3 10/12/0 CentIf SCAN INTERFACE Built-in Parallel Interface
ext_bus 2 10/12/5 c720 CLAIMED INTERFACE Built-in SCSI
tape 0 10/12/5.0.0 stape SCAN DEVICE HP C1533A
disk 11 10/12/5.2.0 sdisk SCAN DEVICE TOSHIBA CD-ROM XM-4101TA
ctl 2 10/12/5.7.0 sctl SCAN DEVICE Initiator
lan 0 10/12/6 lan2 SCAN INTERFACE Built-in LAN
ps2 0 10/12/7 ps2 SCAN INTERFACE Built-in Keyboard/Mouse

Please help to resove the issue..

Thanks in advance
-PVR

Re: Devices are in SCAN state

SUDHAKAR_18 — Wed, 09 Jun 2010 01:44:55 GMT

Can you remove the SCAN devices using
#rmsf -H

and try running #ioscan -fn
#insf -e

Re: Devices are in SCAN state

PVR — Wed, 09 Jun 2010 01:52:08 GMT

Hi,
ioscan -fn is hanging.

Got the below error

insf -eH 10/12/7
insf: Unable to lock /etc/ioconfig - : Cannot lock /etc/ioconfig file.
insf: Installing special files for ps2 instance 0 address 10/12/7

Re: Devices are in SCAN state

madhuchakkaravarthy — Wed, 09 Jun 2010 02:07:36 GMT

hi

run ioscan with -k and look for dmesg and syslog error.

if possible post the latest logs.

check do all vgs are activated

regards

MC

Re: Devices are in SCAN state

Suraj K Sankari — Wed, 09 Jun 2010 02:12:25 GMT

Hi,

Is there any error message in /var/adm/syslog/syslog.log ?

If yes please post here.

Suraj

Re: Devices are in SCAN state

PVR — Wed, 09 Jun 2010 03:51:18 GMT

There is no error message in syslog.log

Thanks

Re: Devices are in SCAN state

Torsten. — Wed, 09 Jun 2010 03:53:19 GMT

SCAN means there is another ioscan running (maybe hung?).

Re: Devices are in SCAN state

PVR — Wed, 09 Jun 2010 04:04:24 GMT

Hi Torsten

I can see that around six ioscan processes are running in the system. tried killing them using kill -9 and it didn't work.

Thanks

Re: Devices are in SCAN state

SUDHAKAR_18 — Wed, 09 Jun 2010 12:16:38 GMT

ioscan got hung and process is gone to init.
need to reboot the machine.

dont run anymore ioscan, pls reboot the machine and let us know.

Re: Devices are in SCAN state

TTr — Wed, 09 Jun 2010 14:00:55 GMT

Rebooting is the only way to clear this. After rebooting do not run ioscan. Check the process listing and see if there is an ioscan that is already running and has not completed. The "SCAN" state is normal in some environments with a lot of SAN devices but it goes away within a couple of minutes. In your case with local devices it is not normal, there is something wrong in bus 10, this looks like the core i/o in a K-series server.