Veritas Commands

• Create Some Volumes in a disk group

  
  vxassist -g $DG make $volume 5g
  vxassist -g $DG make $volume 10g
  vxassist -g $DG make $volume 10g

  
  
• Rename volumes

  
  vxedit -g $DG -v rename $volume1 $volume2

  
  
• show disks in a device group

  
  vxdisk -g $DG list

  
  
• how much can a volume be grown?

  
  vxassist -g $DG maxgrow $volume

  
  
• how much is free on each disk in a disk group. Results in 512b blocks on solaris

  
  vxdg -g $DG free

  
  
• how big is the biggest fileystem that can be created

  
  vxassist -g $DG maxsize

  
  
• As above with layout specified

  
  vxassist -g $DG maxsize layout=stripe
  vxassist -g $DG maxsize layout=raid5
  vxassist -g $DG maxsize layout=concat

  
  
• info about a disk group

  
  vxprint -hrtg $DG

  
  
• remove a volume from a disk group

  
  vxassist -g $DG remove volume $volume

  
  
• relayout to a concat

  
  vxassist -g $DG relayout $volume layout=concat

  
  
• see what's happening in the background

  
  vxtask -l list

  
  
• increase a volume and it's filesystem at the same time

  
  vxresize -g $DG $volume 3584m
  vxresize -g $DG $volume +5g

  
  
• Is veritas licensed? Check exit code.

  
  /opt/VRTS/bin/vxlicrep

  
  
• You can only create/resize volumes on the cluster host which is the master. This will tell you if the host is a master a slave or inactive (not in a cluster).

  
  vxdctl -c mode

  
  
• To enable multipath (dmp) paths use

  
  vxdmpadm enable path=$_base_dev

  
  
• To bring a disk under veritas control

  
  vxdisksetup -if $_emc_path format=cdsdisk privlen=32m

  
  
• Add a disk to a veritas disk group

  
  vxdg -g $DG adddisk $DISK_NAME=$EMC_DEV_NAME



• How much space will be used in overheads on a veritas filesystem?

  
  ((bytes in device) / (bytes/block) * (2 bits/block) / (8 bits/byte)) + (bytes in log) + (2 MB misc)

  
  for a 10 GB file system create via

  mkfs -o bsize=1024,logsize=16m

  the formula gives:

  
  (10G/1024*2/8)+16M+2M
  or
  ((10 * 2^30) / 1024 * 2 / 8) + (16 * 2^20) + (2 * 2^20) = 21495808 bytes
  or
  (10737418240 / 1024 * 2 / 8) + 16777216 + 2097152 = 21495808 = 20.5MB
  A clean 10G filesystem uses 20543488 bytes = 19.6 MB

  Which is close enough for an estimate.
  
• remove a volume

  umount /mount/point
  vxassist -g $DG remove volume $volume

  
  
• remove a disk group

  vxdg destroy $DG

  
  


• To resize a volume and say which disks to leave alone

  vxresize -g $DG $volume 68G !${DG}_008 !${DG}_009



• To move all the data off some disks so that they can be removed

  vxassist -g $DG move $volume !${DG}_008 !${DG}_009



• Remove the disks from the disk group

  vxdg -g $DG rmdisk ${DG}_008 ${DG}_009



• Rename the remainaing disks in the disk group

  vxedit -g $DG -d rename ${DG}_010 ${DG}_003