Monday, January 7, 2008 at 8:43 AM |
vxassist command syntax :

vxassist <option> <Keyword> volume_name [attributes]

Commonly used options are given below (See man vxassist for complete list of supported options)

    -g for specifying diskgroups
    -b for background operation
    -d file containing defaults for vxassist if not specified /etc/default/vxassist is used


Keywords used are make , mirror , move , growto ,growby ,shrintto ,shirnkby ,snapstart , snapshot ,snapwait

Attributes specify volumes layout disks controllar to include exclude etc


Creating a Concatenated Volume

By default, vxassist creates a concatenated volume using the space available on a disk or on the number of disks in a diskgroup if the volume size specified is more then the one available on a single disk.

Disks can be specified from a diskgroup for a volume group but if not mentioned available disks are selected by the volume manager.

Command syntax :

vxassist make volume_name volume_length

To create a new volume appvol of 100 MB in the default disk group rootdg with available disks:

# vxassist make appvol 100m

To create the volume appvol of 100MB on disk03

# vxassist make appvol 100m disk03


Creating a Striped Volume

A striped volume contains at least one plex that consists of two or more subdisks located on two or more physical disks.

Command Syntax :

vxassist make volume_name length layout=stripe

To create a striped volume appvol2 with the default stripe unit size on the default number of disks

# xassist make appvol2 100m layout=stripe

To create a striped volume appvol2 100MB striped volume on three specific disks.

# vxassist make appvol2 100m layout=stripe disk04 disk05 disk06


Creating a RAID-5 Volume

A RAID-5 volume contains a RAID-5 plex that consists of two or more subdisks located on two or more physical disks. Only one RAID-5 plex can exist per volume. A RAID-5 volume may also contain one or more RAID-5 log plexes, which are used to log information about data and parity being written to the volume.

Command Syntax :

vxassist make volume_name length layout=raid5

To create the RAID-5 volume appvol4 with the default stripe unit size on the default number of disks with RAID-5 log,

# xassist make appvol4 100m layout=raid5.
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1 comments:

Sukanta Ghosh said...

good commands, but use of vxmake process would be appreciated.

May 11, 2009 at 10:21 PM
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