During installation, it is possible to set up a variety of configurations for the
usr file systems, and for
The following are some of the possible configurations for the
/usr file system:
usr is a directory under
/ and no separate partition is allocated for it. In this case,
usr becomes part of the
rootvol volume when the root disk is encapsulated and put under Veritas Volume Manager control.
usr is on a separate partition from the root partition on the root disk . In this case, a separate volume is created for the
vxmirror mirrors the
usr volume on the destination disk.
usr is on a disk other than the root disk. In this case, a volume is created for the
usr partition only if you use VxVM to encapsulate the disk. Note that encapsulating the root disk and having mirrors of the root volume is ineffective in maintaining the availability of your system if the separate
usr partition becomes inaccessible for any reason. For maximum availablility of the system, it is recommended that you encapsulate both the root disk and the disk containing the
usr partition, and have mirrors for the
rootvol volume must exist in the boot disk group.
There are other restrictions on the configuration of
See the Veritas Volume Manager Administrator's Guide.
VxVM allows you to put
swap partitions on any disk; it does not need an initial
swap area during early phases of the boot process. By default, the Veritas Volume Manager installation chooses partition 0 on the selected root disk as the
root partition, and partition 1 as the
swap partition. However, it is possible to have the
swap partition on a partition not located on the root disk. In such cases, you are advised to encapsulate that disk and create mirrors for the
swap volume. If you do not do this, damage to the
swap partition eventually causes the system to crash. It may be possible to boot the system, but having mirrors for the
swapvol volume prevents system failures.