Using Other Boot Options

Maintenance Mode

When troubleshooting LVM, you may need to enter into maintenance mode using the -lm option. For more information on maintenance mode, see the book "Managing Systems and Workgroups."

On a non-vPars computer, you would boot the computer into maintenance mode by executing the following:

ISL> hpux -lm

On a vPars computer, you specify the same -lm option but as an argument to either the monitor vparload command or as a -o option to the shell vparboot command.

For example, if the partition winona2 is down, to boot winona2 into maintenance mode:

From MON>

From the monitor prompt:

MON> vparload -p winona2 -o "-lm"

From shell prompt

From the running partition winona1:

winona1# vparboot -p winona2 -o "-lm"

Overriding Quorum

In LVM, when the root disk is mirrored, the computer can only activate the root volume group, which contains the OS instance, when the majority of the physical volumes in a root volume group are present at boot time. This is called establishing a quorum. Sometimes, you may want to boot an OS instance regardless of whether a quorum is established. You can override the quorum requirement by using the -lq option. For more information on quorums, see the book "Managing Systems and Workgroups."

On a non-vPars computer, you would boot overriding quorum using:

ISL> hpux -lq

On a vPars computer, you can execute either of the following:

From MON>

From the monitor prompt, to boot winona2 overriding the quorum requirement:

MON> vparload -p winona2 -o "-lq"

From shell prompt

From the running virtual partition winona1, to boot winona2 overriding the quorum requirement:

winona1# vparboot -p winona2 -o "-lq"

	NOTE: Specifying the boot options from the command line only affects the current boot. On a non-vPars computer, to have a computer permanently boot with the -lq option, you would put "hpux -lq" in the LIF AUTO file. On a vPars computer, to have a partition boot with the -lq option, you would simulate the AUTO file usage by entering the -lq option into the partition database. See “Simulating the AUTO File on a Partition”.