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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.

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.

See the vxassist(1M) manual page.

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