HP-UX 11i v3 LVM New Features in HP-UX 11i v3 (September 2009)

8
Starting the modification by writing to all Physical Volumes
Applying the configuration to all Physical Volumes from "/etc/lvmconf/vgtest.conf"
has been saved in
Now issuing
vgdisplay on the volume group shows the modified values (in this case the maximum physical volume)
follows:
est
"vgtest" uccessfully changed.
e /dev/vgtest
te Access read/write
atus available
255
64
1
1
V 2559
2
4
2558
10
Free PE 2548
Modification of Volume Group Settings
max_pe, max_pv,
on an existing
ing three configuration parameter set via
vgcreate:
ax_pe setting set by
vgcreate -e).
lume group can contain (max_pv setting set by vgcreate -
p
).
tting set by vgcreate -l).
The vgmodify command displays the possible volume group max_pe and max_pv settings for this volume group to
help optimize an existing volume group configuration.
For more information, see vgmodify(1M) and the LVM Volume Group Dynamic LUN expansion (DLE)/vgmodify
Completed the modification process.
New Volume Group configuration for "vgtest"
"/etc/lvmconf/vgtest.conf.old"
Volume group "vgtest" has been successfully changed.
for the volume group as
# vgchange -a y vgt
Activated volume group
sVolume group has been
# vgdisplay /dev/vgtest
VG Nam
riVG W
VG St
Max LV
Cur LV 1
1 Open LV
Max PV
Cur PV
Act PV
Max PE per P
VGDA
PE Size (Mbytes)
Total PE
Alloc PE
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
When an LVM volume group is created, several configuration parameters are set (for example,
max_lv). The new
vgmodify command enables you to change these configuration parameters
volume group, which avoids having to migrate user data.
The
vgmodify command can alter the follow
• The maximum number of physical extents that can be allocated per physical volume (m
• The maximum number of physical volumes that the vo
• The maximum number of logical volumes that the volume group can contain (max_lv se
whitepaper.
Modification of Physical Volume Type (Boot/Non-Boot)
When initializing a physical volume for LVM, pvcreate assigns a type to it, either boot or non-boot (Note that
bootable physical volumes are not supported in Version 2.
x volume groups).