Need to incrwase PHYSICAL VOLUME space on hard drive with free space on it Post: 302707685

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Operating Systems Linux Fedora Need to incrwase PHYSICAL VOLUME space on hard drive with free space on it Post 302707685 by mojoman on Saturday 29th of September 2012 10:43:47 AM

09-29-2012

Registered User

Need to incrwase PHYSICAL VOLUME space on hard drive with free space on it

Hi,

I run Fedora 17.

I created a physical volume of 30GB on a disk with 60GB of space so there is 30GB of free space. On the physical volume, I created my volume group and logical volumes. I assigned all the space in the physical volume to my volume group. I need to add the 30GB of free space now on my hard drive to the existing physical volume so I can assign it to my volume group to extend one of my logical volumes.

A friend at work says all I have to do is to use the pvresize command and the PV will "grow" into the free space. But that does not seem to work. Linux recognizes that the PV is 60GB but it then when I try and extend the logical volume it complains that there is not enough free space.

Can someone give me a brief explanation how I should handle my scenario?
I was thinking I should just use pvcreate, create another partition, and then issue vgextend command but my friend at work says this is not necessary and insists his method will work.

Any advice?

mojoman

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LEARN ABOUT BSD

vgreduce

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

NAME
       vgreduce - reduce a volume group

SYNOPSIS
       vgreduce  [-a|--all] [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--removemissing] [-t|--test] [-v|--verbose] VolumeGroupName [Physi-
       calVolumePath...]

DESCRIPTION
       vgreduce allows you to remove one or more unused physical volumes from a volume group.

OPTIONS
       See lvm for common options.

       -a, --all
	      Removes all empty physical volumes if none are given on command line.

       --removemissing
	      Removes all missing physical volumes from the volume group, if there are no logical volumes allocated on those. This resumes  normal
	      operation of the volume group (new logical volumes may again be created, changed and so on).

	      If this is not possible (there are logical volumes referencing the missing physical volumes) and you cannot or do not want to remove
	      them manually, you can run this option with --force to have vgreduce remove any partial LVs.

	      Any logical volumes and dependent snapshots that were partly on the missing disks get removed completely. This includes those  parts
	      that lie on disks that are still present.

	      If your logical volumes spanned several disks including the ones that are lost, you might want to try to salvage data first by acti-
	      vating your logical volumes with --partial as described in lvm (8).

SEE ALSO
       lvm(8), vgextend(8)

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