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Setting default values for vxassist

The default values that the vxassist command uses may be specified in the file /etc/default/vxassist. The defaults listed in this file take effect if you do not override them on the command line, or in an alternate defaults file that you specify using the -d option. A default value specified on the command line always takes precedence. vxassist also has a set of built-in defaults that it uses if it cannot find a value defined elsewhere.

  Note   You must create the /etc/default directory and the vxassist default file if these do not already exist on your system.

The format of entries in a defaults file is a list of attribute-value pairs separated by new lines. These attribute-value pairs are the same as those specified as options on the vxassist command line. Refer to the vxassist(1M) manual page for details.

To display the default attributes held in the file /etc/default/vxassist, use the following form of the vxassist command:

# vxassist help showattrs

The following is a sample vxassist defaults file:

# By default:

# create unmirrored, unstriped volumes

# allow allocations to span drives

# with RAID-5 create a log, with mirroring don't create a log

# align allocations on cylinder boundaries

layout=nomirror,nostripe,span,nocontig,raid5log,noregionlog,
diskalign

# use the fsgen usage type, except when creating RAID-5 volumes

usetype=fsgen

# allow only root access to a volume

mode=u=rw,g=,o=

user=root

group=root

# when mirroring, create two mirrors

nmirror=2

# for regular striping, by default create between 2 and 8 stripe

# columns

max_nstripe=8

min_nstripe=2

# for RAID-5, by default create between 3 and 8 stripe columns

max_nraid5stripe=8

min_nraid5stripe=3

# by default, create 1 log copy for both mirroring and RAID-5 volumes

nregionlog=1

nraid5log=1

# by default, limit mirroring log lengths to 32Kbytes

max_regionloglen=32k

# use 64K as the default stripe unit size for regular volumes

stripe_stwid=64k

# use 16K as the default stripe unit size for RAID-5 volumes

raid5_stwid=16k