hdds physically Post: 302072205

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Operating Systems HP-UX hdds physically Post 302072205 by buffoonix on Friday 28th of April 2006 07:51:13 PM

04-28-2006

Registered User

I would rather dd from the raw device and read bigger chunks
e.g.
dd if=/dev/rdsk/c?t?d? of=/dev/null bs=1024k

If your disk is defunct then the command would probably hang and could not be killed.
Therefore better start it as a batch job,
or if run from the console run tsm before
to have another virtual terminal to leave you a prompt.

You could also let the device try to identify

diskinfo -v /dev/rdsk/c?t?d?

If not all fields are populated there might be a problem with the disk.

Also see if ioscan reports loss of hardware

/usr/sbin/ioscan -fCdisk|grep NO_HW

If you have OnlineDiag installed (swlist OnlineDiag)
you could run stm and read info logs of disk.

If you have EMS running you should check its log for any
monitoring events
more /var/opt/resmon/logs/event.log
But if you had it should have warned you by some notification email.

buffoonix

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tapset::scsi

tapset::scsi(3stap)													       tapset::scsi(3stap)

NAME

       tapset::scsi - systemtap scsi tapset

DESCRIPTION

	This family of probe points is used to probe SCSI activities.

       scsi.ioentry
	      Prepares a SCSI mid-layer request

	       See probe::scsi.ioentry(3stap)
	       for details.

       scsi.iodispatching
	      SCSI mid-layer dispatched low-level SCSI command

	       See probe::scsi.iodispatching(3stap)
	       for details.

       scsi.iodone
	      SCSI command completed by low level driver and enqueued into the done queue.

	       See probe::scsi.iodone(3stap)
	       for details.

       scsi.iocompleted
	      SCSI mid-layer running the completion processing for block device I/O requests

	       See probe::scsi.iocompleted(3stap)
	       for details.

       scsi.ioexecute
	      Create mid-layer SCSI request and wait for the result

	       See probe::scsi.ioexecute(3stap)
	       for details.

       scsi.set_state
	      Order SCSI device state change

	       See probe::scsi.set_state(3stap)
	       for details.

SEE ALSO

	  probe::scsi.ioentry(3stap),	   probe::scsi.iodispatching(3stap),	  probe::scsi.iodone(3stap),	 probe::scsi.iocompleted(3stap),
       probe::scsi.ioexecute(3stap),  probe::scsi.set_state(3stap),  stap(1), stapprobes(3stap)

IBM
									---						       tapset::scsi(3stap)