VXVM: Command examples

Title:

VXVM: Command examples

Author:

Douglas O’Leary <dkoleary@olearycomputers.com>

Description:

VXVM: Command examples

Date created:

08/2008

Date updated:

09/2009

Disclaimer:

Standard: Use the information that follows at your own risk. If you screw up a system, don’t blame it on me…

vxdisksetup -i ${ctd} [ privlen = ${size} ]

Lays out the vxvm formatting on the disk. ${ctd} is specified w/o the /dev/dsk/

vxdg -g ${dg} free ${disk}

Identifies the amount of free space on that disk.

vxprivutil scan ${rdsk}| grep group

IDs the group to which a disk belongs:

# vxprivutil scan /dev/rdsk/c8t7d3 | grep ^group
group: name=MJPdg id=1228148230.1267.usilap35

vxdg -g ${dg} adddisk ${pv}=${pv}

Add disks to disk group ${dg}

vxplex -g ${dg} -o rm dis ${plex}

Disassociate and remove a mirrored plex from a volume. Not sure what this would do if it were the only plex in a volume…

vxassist -g ${dg} mirror ${vol} ctrl:c##

Mirrors volume ${vol} onto any available disk on controller c##. Other storage attributes are available as well; see the admin guide for details

vxassist -g ${dg} remove mirror ${vol} !${subdisk}

Counterintuitively, this removes the mirror from ${subdisk}

vxprint -lvp -g ${group} ${plex}

Displays plex information like whether or not it’s striped.

vxdg -g ${group} free

Displays the amount of free space on each disk in the disk group - measured in sectors so divide by 2048 to get megs.

vxassist -g ${group} maxgrow ${vol}

Displays the maximum size you can grow the filesystem.

vxresize -F vxfs -g ${group} ${vol} [+/-]${size}[kmg]

Grows the volume by the amount specified in size. Size can be specified in k’s, m’s or g’s. no space between +/- and the number