topic Re: internal disk in Operating System - HP-UX

internal disk

navin — Fri, 06 Feb 2009 18:50:20 GMT

Hi ,
I have been using insf for many years to initialize the disk(replaced failed disk)
Still it is showing up as error ,means the ioscan shows the claim as nohw.any idea.
If the disk backplain is fault - don't we get a error in syslog.is there any other way to initialize the disk
thanks

Re: internal disk

sujit kumar singh — Fri, 06 Feb 2009 19:04:41 GMT

Hi Navin,

what is the Model of the machine and the OS version.Are the internal disks SCSI or SAS?

please post:
#model
#ioscan -fn
#ioscan -fnCdisk
#uname -a

regards
sujit

Re: internal disk

Ganesan R — Fri, 06 Feb 2009 19:37:19 GMT

Hi Navin,

If ioscan shows NO_HW then it is nothing to do with insf.

Insf will create the device files which is recognised by kernel and in claimed status.

If the device is in NO_HW status, it means the device which was there on the same physical path is missing now or kernel is not able to detect the device due to any reason.

I would suspect the disk could be dead one. You can use dd command to try read the disk. If that fails then you need to replace with new one.

# dd if=/dev/rdsk/c1t5d0 of=/dev/null bs=1024k

Re: internal disk

Johnson Punniyalingam — Sat, 07 Feb 2009 18:31:28 GMT

Hi Navin,

>>Ganesan<< Comment is Correct,

You can give try again

# insf -e
# ioscan -fnC disk

(if still NO_HW Probably Disk dead,

Thanks,
Johnson

Re: internal disk

Jeeshan — Sun, 08 Feb 2009 05:44:58 GMT

NO_HW won't go until restart.

restart server and check the disk is claiming or not.

Re: internal disk

Andrew Rutter — Sun, 08 Feb 2009 21:13:07 GMT

hi, navin,

firstly insf commands will not initialize the disk ready for use. it simply created the necessary device files needed to be able to use the hardware.

remove the disk, assuming its a hotpluggable disk? dont know you havent mentioned it, or what server model it is.

then wait 2 minutes with disk removed. insert new disk and watch the leds on the drive. they should illuminate when first connected to the backplane.

then wait another 2 minutes and perform a full system ioscan.
#ioscan
not an ioscan from the running kernel.

once this has run then issue the command to the detail info
#ioscan -funC disk

if the disk is not seen, then try another disk, before the backplane.

you should not need to reboot the system, or issue insf commands.

you only need insf if it showed as unclaimed status

Andy