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Full Discussion: chvg -g on Concurrent VG
Operating Systems AIX chvg -g on Concurrent VG Post 302259443 by funksen on Tuesday 18th of November 2008 06:09:28 AM
Old 11-18-2008
chvg -g on Concurrent VG

Hi,

on normal (non concurrent) vgs, it's possible to extend a lun on san-storage , and use chvg -g to rewrite vgda, and use disks with the new size for lvm operations


is the same procedure possbile on a hacmp-cluster (2 node in our case) with concurrent vgs in active/passive mode?

cheers funksen

Edit:

ok here ist what the man page says, but perhaps it's possible and the man page just was not adapted, has anyone tried it yet? Smilie

Code:
 -g
            Will examine all the disks in the volume group to see if they have
            grown in size. If any disks have grown in size attempt to add
            additional PPs to PV. If necessary will determine proper 1016
            multiplier and conversion to big vg. Notes:

              1    The user might be required to execute varyoffvg and then
                   varyonvg on the volume group for LVM to see the size change
                   on the disks.
              2    There is no support for re-sizing while the volume group is
                   activated in classic or enhanced concurrent mode.
              3    There is no support for re-sizing for the rootvg.

Edit2: aix 5.3 TL07/08

Last edited by funksen; 11-18-2008 at 07:18 AM..
 

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

NAME
       vgdisplay - display attributes of volume groups

SYNOPSIS
       vgdisplay  [-A|--activevolumegroups]  [-c|--colon|-s|--short|-v|--verbose]  [-d|--debug]  [-h|--help] [--ignorelockingfailure] [--nosuffix]
       [-P|--partial] [--unitshHbBsSkKmMgGtTpPeE] [--version] [VolumeGroupName[VolumeGroupName...]]

       vgdisplay      --columns      |	    -C	    [--aligned][-d|--debug][-h|-?|--help]	[--ignorelockingfailure][--noheadings][--nosuffix]
       [-o|--options[+]Field[,Field]]  [-O|--sort[+|-]Key1[,[+|-]Key2[,...]]]	[-P|--partial] [--separatorSeparator] [--unbuffered] [--unitshHbB-
       sSkKmMgGtTpPeE] [-v|--verbose] [--version] [VolumeGroupName[VolumeGroupName...]]

DESCRIPTION
       vgdisplay allows you to see the attributes of VolumeGroupName (or all volume groups if none is given) with it's physical and  logical  vol-
       umes and their sizes etc.

       vgs (8) is an alternative that provides the same information in the style of ps (1).

OPTIONS
       See lvm for common options and vgs for options given with --columns.

       -A, --activevolumegroups
	      Only select the active volume groups.

       -c, --colon
	      Generate colon separated output for easier parsing in scripts or programs.  N.B. vgs (8) provides considerably more control over the
	      output.

	      The values are:

	      1  volume group name
	      2  volume group access
	      3  volume group status
	      4  internal volume group number
	      5  maximum number of logical volumes
	      6  current number of logical volumes
	      7  open count of all logical volumes in this volume group
	      8  maximum logical volume size
	      9  maximum number of physical volumes
	      10 current number of physical volumes
	      11 actual number of physical volumes
	      12 size of volume group in kilobytes
	      13 physical extent size
	      14 total number of physical extents for this volume group
	      15 allocated number of physical extents for this volume group
	      16 free number of physical extents for this volume group
	      17 uuid of volume group

       -s, --short
	      Give a short listing showing the existence of volume groups.

       -v, --verbose
	      Display verbose information containing long listings of physical and logical volumes.  If given twice, also display verbose  runtime
	      information of vgdisplay's activities.

       --version
	      Display version and exit successfully.

       --columns|-C
	      Display output in columns, the equivalent of vgs.  Options listed are the same as options given in vgs (8).

SEE ALSO
       lvm(8), vgs(8), pvcreate(8), vgcreate(8), lvcreate(8)

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