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

16
e links
line option in the pvchange
command, which controls the way LVM monitors alternate links to a multipathed physical volume.
By default, LVM proactively monitors the health of all configured links. If auto-switchback is enabled (by
If proactive polling of alternate links is undesirable, you can disable polling using
pvchange –p n. For more
1M).
p- Version 2.0.
at of Version 1.0
ps. Version 2.0 enables the configuration of larger volume groups (up to 512), logical volumes (up
to 511), physical volumes (up to 511), and several other volume group parameters. You can manage a Version
ace. But features
upported on Version
ted on Version 2.0
e group- version 2.1.
p, using the same
user interface. Version 2.1 is similar to version 2.0, but allows configuration of much greater number of volume
s (up to 2048), and logical volumes (up to 2047). With this release, cluster
lock is supported on Version 2.
x volume groups.
ps in HP-UX 11i v3
Proactive Polling of Alternat
With September 2007 release of HP-UX 11i v3, LVM supports a new -p command
default), this polling helps LVM detect and switch to a better link when it becomes available.
information, see pvchange(
Version 2. x Volume Groups
With the March 2008 release of HP-UX 11i v3, LVM supports a new version of volume grou
Version 1.0 is the version supported on all current and previous versions of HP-UX 11i.
A Version 2.0 volume group is a volume group whose metadata layout is different from th
volume grou
2.0 volume group the same way as a Version 1.0 volume group, using the same user interf
such as sparing, bad block relocation, cluster lock, boot, dump, and primary swap are not s
2.0 volume groups. Also,
vgmodify, pvck, lvlnboot, and lvrmboot commands are not suppor
volume groups.
With the September 2008 release of HP-UX 11i v3, LVM supports another version of volum
You can also manage a Version 2.1 volume group the same way as a Version 1.0 volume grou
groups (up to 2048), physical volume
For more information on Version 2.
x volume groups, see the LVM Version 2.0 Volume Grou
x volume groups, see whitepaper. For more information on the supported limits of Version 1.0 and Version 2.
the LVM Limits White Paper
.
Boot Disk Configuration Self Healing
With the September 2008 release of HP-UX 11i v3, LVM supports self healing of boot disk configurations. If the
device special file for a LVM boot disk changes because its hardware path changed, LVM scans for the boot disk
during the boot process. After successfully booting, LVM automatically updates the /etc/lvmtab LVM
configuration file and the LVM metadata on each bootable disk in the root volume group with the new boot
path. Future system boots will not need to scan. This behavior is configurable, and is enabled by default.
For more information, see lvmadm(1M) and lvm(7).