topic Re: pvcreate question in Operating System - HP-UX

pvcreate question

Travis Harp_1 — Thu, 15 Mar 2007 16:16:17 GMT

Hello all -

I have a system that has SAN disks attached and after I pvcreate'ed the disks and vgextend'ed the volume groups I noticed that the disks were created too small.

Now the SAN group has re-created the disks the correct size but when I vgreduce the disks and try to use pvcreate on them again they show back up the same size as they were before.

Where is the system saving this information so I can force it to find the new size of the disks.

Thanks,
Travis

Re: pvcreate question

Patrick Wallek — Thu, 15 Mar 2007 16:29:15 GMT

You might try using rmsf to remove the /dev/dsk/ and /dev/rdsk/ device files for those LUNs.

Then use insf to recreate the device files. You can then use diskinfo (using the /dev/rdsk/ devie) to see what size HP-UX sees.

Re: pvcreate question

Court Campbell — Fri, 16 Mar 2007 14:39:25 GMT

You may have to re-run ioscan.

ioscan -fnC disk

then

diskinfo /dev/rdsk/c#t#d#

See if it has changed. I think that the disk info may be held in a kernel structure until you either reboot or rerun ioscan.

Re: pvcreate question

melvyn burnard — Fri, 16 Mar 2007 14:47:31 GMT

If you have not rebooted since making these changes on the SAN side, the OS will not recognize the change in size.
you need to do a reboot