VERITAS Volume Manager 4.1 Administrator's Guide

Administering Disks

Rootability

Chapter 292

# /etc/vx/bin/vxdestroy_lvmroot -v c0t1d0

# /etc/vx/bin/vxres_lvmroot -v -b c0t1d0

The -b option to vxres_lvmroot sets c0t1d0 as the primary boot device.

As these operations can take some time, the verbose option, -v, is speciﬁed to indicate how far

the operation has progressed.

For more information, refer the vxres_lvmroot (1M) manual page.

Adding Swap Disks to a VxVM Rootable System

On occasion, you may need to increase the amount of swap space for an HP-UX system. If

your system has a VxVM root disk, use the procedure described below.

Step 1. Create a new volume that is to be used for the swap area. The following example

shows how to set up a non-mirrored 1GB simple volume:

# vxassist -g rootdg make swapvol2 1g

Step 2. Add the new volume as a swap device to the /etc/fstab ﬁle as shown in this

sample entry:

/dev/vx/dsk/bootdg/swapvol2 / swap pri=1 0 0

Step 3. Use the System Administration Manager (SAM) to increase the value of the

maxswapchunks tunable as required by the swapon command. For example, if you

double the amount of swap space, double the value of maxswapchunks.

Step 4. Build a new kernel and reboot the system:

# mk_kernel -v -o /stand/vmunix

# kmupdate

# reboot -r