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Operating Systems AIX /usr/sbin/extendvg: Unable to extend volume group Post 302904758 by rbatte1 on Friday 6th of June 2014 09:10:01 AM
Old 06-06-2014
Dear williamen,

Erbat? Who is Erbat? I'm either rbatte1 or Robin.

Anyway, thanks for the output. It gives us:-
Code:
PP SIZE:  512 megabyte(s)

From the manual page for mkvg, we read:-
Quote:
When creating the default volume group type (with a maximum of 32 PVs) or the big volume group type (with a maximum of 128 PVs), there is a
limitation of 1016 physical partitions per PV. When specifying the physical partition size (-s), make sure the value is set large enough so
that 1016 physical partitions per PV limit is not violated. For example, a partition size of at least 16 MB would be needed to create a volume
group with a 10 GB disk. Using a factor size (-t) of 2, a smaller partition size of 8 MB can be used. If a factor value is specified, the
maximum number of PVs that can be included in the volume group is MaxPVs/factor.
I think that you have reached this limit. Have a calculate to see if you agree. When creating the VG, the PP size has been set larger, possibly automatically for a 3Tb volume group.

Read the manual page for chvg and see if you might get away with chvg -G but read the manual first to see if it applies safely to you.


You may need to build a new volume group and add more logical volumes in there. Our main Oracle database has 12 volume groups with around 30 logical volumes in each. What do you need to add the extra disk for? There is space to grow LVs in your current VG - although it's only about about 3G which is pretty small for this VG I suppose.



Robin
 

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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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