Installing and Managing HP-UX on Boot Disks Greater than 2TB with LVM Layout

7
System volumes (root/boot/swap/dump) must be allocated contiguous on physical disk. For this reason,
usually the expansion of a system volume requires movement of system volumes beneath to make contiguous
free space for growth. Any interruptions (crash or partial movement of system volume) during movement of
system volumes may make them non-contiguous. If root logical volume becomes non-contiguous, it will result
in boot failure. Non-contiguous swap or dump logical volumes will result in disablement of primary
swap/dump respectively. For these reasons, though the expansion can be done online on current boot disk,
we recommend you to perform the expansion on DRD clone disk.
Compatibility of boot disks of size greater than 2TB across
fusion releases
The boot disks of size greater than 2TB should only be administered on a system running LVM version
March 2013 or later. The administration of boot disk here includes any usage of LVM commands that
change boot configuration (lvlnboot(1M), lvrmboot(1M)) or changes data layout (lvextend(1M),
lvreduce(1M), pvmove(1M) etc).
Warning
The administration of boot disks > 2 TB should not be attempted on a system
running versions of LVM prior to the March 2013 release. If such administration is
mistakenly attempted, the consequence would be that the primary swap and dump
may not get configured during a subsequent Maintenance Mode Boot (MMB) over
that disk. However, regular boot is unaffected.
To correct the situation, re-configure all the system volumes
(Root/Boot/Swap/Dump Logical Volumes) from the system running LVM release
version March 2013 or later. First use lvrmboot(1m) command to remove all the
system volume configurations and then lvlnboot(1m) to re-configure them.
Downgrade of LVM software from version March 2013 or later to a release prior
to March 2013 should not be attempted on a boot disk of size greater than 2TB.
Doing so may result in boot failure when Maintenance Mode Boot (MMB) is
attempted subsequently with the downgraded kernel.
Downgrade of entire OE version from March 2013 or later to a release prior to
March 2013 may result in regular boot failure if attempted on a boot disk of size
greater than 2 TB
The aforementioned compatibility statements do not apply to boot disks of size 2 TB and smaller.
Software Requirements
This new boot capability requires the following software, all of which is always-installed with all March
2013 (or later) Operating Environments (OEs).
• BaseLVM B.11.31.1303
• PHKL_43192 (dump cumulative patch)
• PHKL_42916 (SCSI cumulative I/O patch)