Is it possible to extend PV

Operating Systems Linux Red Hat Is it possible to extend PV

06-11-2017

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Is it possible to extend PV

Hello,

I have redhat and centos systems that I've only been able to grow the VG by adding more disks. I've been searching the web for a way to extend a volume group by growing the physical disk only and not having to add a second disk. Is it possible?

I can do this with AIX, by just inceasing the size of the underlying LUN, then execute the chvg command. The Volume group will detect the lun increase and that space will be available to the lv and fs without having to reboot.

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LEARN ABOUT DEBIAN

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)

Red Hat