topic Re: DIsk Issue in Operating System - HP-UX

DIsk Issue

Ashwani K — Mon, 26 Apr 2010 22:25:48 GMT

Dear experts,

I have one doubt. Can I replace a bad disk(if disk is hot swappable) without removing it from vg(without doing vgreduce.

Regards,

Ashwani

Re: DIsk Issue

Steven E. Protter — Tue, 27 Apr 2010 00:13:46 GMT

Shalom,

You can do so. There is a vgreduce -f function that will let you get dead disks out of the volume group.

if the disk is really dead there is sometimes no way to get it out of the volume group.

Check the man page, it is not for the light of heart.

SEP

Re: DIsk Issue

Raj Briden — Tue, 27 Apr 2010 01:53:12 GMT

* replace the disk

* verify the hardware path (it must be same )

* #vgcfgrestore( check man for details)

* #vgsync

check with vgdisplay

Re: DIsk Issue

Kapil Jha — Tue, 27 Apr 2010 02:35:57 GMT

vgrestore would work, without reducing the disk from vg.

For most of disk related queries please check
http://www.scribd.com/doc/19493230/When-Good-Disks-Go-Bad

or google When_Good_Disks_Go_Bad.pdf

BR,
Kapil+

Re: DIsk Issue

Kranti Mahmud — Tue, 27 Apr 2010 03:22:09 GMT

Hi Ashwani,

Check the below links:

http://www.compute-aid.com/hpux/lvm_disk_replace.html

http://forum.soft32.com/linux/gentoo-LVM-Removing-Bad-Disk-disk-ftopict332018.html

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1272342019580+28353475&threadId=1000462

Rgds-Kranti

Re: DIsk Issue

Torsten. — Tue, 27 Apr 2010 04:41:06 GMT

No need to remove the disk from VG.

See

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad_WP.pdf

You simply deny LVM access to the disk, then swap the disk. (pvchange -a n ...).