Reuse a LUN Post: 302688391

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Homework and Emergencies Emergency UNIX and Linux Support Reuse a LUN Post 302688391 by Peasant on Sunday 19th of August 2012 03:00:09 AM

08-19-2012

Moderator

You will need to run on server-1 (on which you want to remove the LUN from)

1. vgdisplay -v the group, and write down the LUN's/disks that are used in it.
2. vgexporton that volume group.
3. pvremove on disks that are inside that volume group.
4. Depresent the disks from storage side.
5. Run ioscan -fnC disk, and check for NO_HW
6. Run rmsf -H on NO_HW devices

You have now removed the Lun(s) from server1.

Present the lun's to server 2, run ioscan -fnC disk.
If you are running v2, you will need to run insf -e to create devices, on v3 they will be created after ioscan.
Verify the results with xpinfo, or similar tool.
Run pvcreate on those rdsks created (you don't need -f if you ran pvremove on server1), only per one path is enough of course.
Use the LUN in new or existing volume group.

Notice, if you are running v2 and you are using multipath, you will need to add both paths in your volume group via vgextend (existing) or vgcreate (new).

Hope that helps.
Regards
Peasant.

Peasant

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LEARN ABOUT OSF1

pvremove

PVREMOVE(8)						      System Manager's Manual						       PVREMOVE(8)

NAME

       pvremove - remove a physical volume

SYNOPSIS

       pvremove  [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [-f[f]|--force [--force]] [-y|--yes] PhysicalVolume [PhysicalVol-
       ume...]

DESCRIPTION

       pvremove wipes the label on a device so that LVM will no longer recognise it as a physical volume.

OPTIONS

       See lvm(8) for common options.

       -ff, --force --force
	      Force the removal of a physical volume belonging to an existing volume group.  Normally vgreduce(8) should be used instead  of  this
	      command.	You cannot remove a physical volume which in use by some active logical volume.

       -y, --yes
	      Answer yes to all questions.

SEE ALSO

       lvm(8), pvcreate(8), pvdisplay(8), vgreduce(8)

Sistina Software UK					 LVM TOOLS 2.02.95(2) (2012-03-06)					       PVREMOVE(8)

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