topic Re: ioscan in Operating System - HP-UX

ioscan

Raju_S — Thu, 22 Feb 2007 00:54:06 GMT

Hi,

When i give command

ioscan -fnH 0/0/1/1.15

disk 0 0/0/1/1.15.0 sdisk NO_HW DEVICE HP 18.2GMAN3184MC
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0

it shows NO_HW

and in full listing it shows Claimed

disk 0 0/0/1/1.15.0 sdisk CLAIMED DEVICE HP 18.2GMAN3184MC

Can anyone explain.

Thanks & Regards

Re: ioscan

Sandman! — Thu, 22 Feb 2007 01:04:13 GMT

Are there any errors corresponding to that hardware path in the syslog?

Re: ioscan

Raju_S — Thu, 22 Feb 2007 01:07:54 GMT

Hi,

Yes there are errors in syslog. i.e.

"Possible device problem with device: "> target 2 0/0/1/1.15 tgt SCAN DEVICE"

Regards

Re: ioscan

Mridul Shrivastava — Thu, 22 Feb 2007 02:10:01 GMT

-H sometimes produce incorrect results...
See the following extract from the ioscan man pages:

-H hw_path Restrict the scan and output listing to those devices connected at the specified hardware path.The hardware path must be a bus path.Scanning below the bus level will not probe the hardware and may produce incorrect results.
For example, specifying the path at the target level will always change the state of the device attached to it as NO_HW. The state of the device may be restored by retrying ioscan from a bus node above the NO_HW node. When used with -M, this option specifies the full hardware path at which to bind the software modules.

Re: ioscan

Raju_S — Thu, 22 Feb 2007 02:23:37 GMT

Thankyou all for the reply.

Regards