VxVM Cheat Sheet

A handy URL before we start: http://www.eng.auburn.edu/pub/mail-lists/ssastuff/

Disk Commands

• Initialise Disks / vxdisksetup -i c0t9d0
• Un-initialise disks / vxdiskunsetup -C c0t9d0
• Remove Disk / vxdisk rm c1t0d0
• Scan for new disks / vxdctl enable
• Scan for new disks (3.2 only) / vxdisk scandisks
• List Disks / vxdisk list
• List Disk Header / vxdisk list disk1
• List disk private region / vxprivutil list /dev/rdsk/c1t9d0s2
• Move data to another disk / vxevac -g my-dg old-disk new-disk
• Reserve a disk / vxedit -g my-dg set reserver=on my-disk
• Disable relocation to (3.1 only) / vxedit -g my-dg set nohotuser=on my-disk
• Undo relocation (3.1 only) / vxunreloc -g my-dg my-disk

Disk group commands

• Create disk group / vxdg init my-dg disk01=c4t4d0
• Remove a disk group / vxdg destrogy my-dg
• Add disk / vxdg -g my-dg adddisk disk02=c1t5d0
• Remove disk / vxdg -g my-dg rmdisk disk02
• Import disk group / vxdg import otherdg
• Deport disk group / vxdg deport my-dg
• List disk groups / vxdg list
• Display disk group info / vxdg list my-dg
• List free space / vxdg -g my-dg free

Subdisk commands

• Create subdisk / vxmake -g my-dg sd my-sd disk1,0,5000
• Remove subdisk / vxedit -g my-dg rm my-sd
• Display subdisk info / vxprint -st
• Associate subdisk to plex / vxsd -g my-dg assoc my-plex my-sd
• Disassociate subdisk / vxsd -g my-dg dis my-sd
• Move a subdisk / vxsd -g my-dg [-o rm] mv old-sd new-sd

Plex Commands

• Create a plex / vxmake -g my-dg plex my-plex sd=my-sd
• Associate a plex / vxplex -g my-dg att my-vol my-plex
• Disassociate a plex / vxplex -g my-dg dis my-plex
• Attach a plex / vxplex -g my-dg att my-vol my-plex
• Detach a plex (remains associated) / vxplex -g my-dg det my-plex
• List plexes / vxprint -lp
• Remove a plex / vxedit -g my-dg rm my-plex

Volume Commands

• Create a volume / vxassist -g my-dg make my-vol 1G or vxassist make my-vol 1G layout=stripe
• Delete a volume / vxedit -g my-dg -r rm my-vol
• Change owner of a volume / vxedit -g my-dg set user=oracle my-vol
• Change permissions of a vol / vxedit -g my-dg set mode=644 my-vol
• Display volume info / vxprint -g my-dg -hrt my-vol or vxinfo -g my-dg my-vol
• Resize a volume / vxassist -g my-dg growto my-vol 2G or vxassist -g my-dg growby my-vol 500M
• Resize volume and filesystem / vxresize -g my-dg my-vol new-size
• Start a volume / vxvol -g my-dg start my-vol
• Force a volume to start (eg a broken stripe) / vxvol -g my-dg -f start my-vol
• Stop a volume / vxvol -g my-dg stop my-vol
• Initialise a volume / vxvol -g my-dg init active my-vol
• Recover a volume / vxrecover -g my-dg my-vol
• Mirror a volume / vxassist -g my-dg mirror my-vol
• Remove mirror from volume / vxassist -g my-dg remove mirror my-vol
• Add log to a volume / vxassist -g my-dg addlog my-vol
• Remove log from a volume / vxassist -g my-dg remove log my-vol
• Snapshot a volume / vxasssit -g my-dg snapstart my-vol or vxassist -g my-dg snapshot my-vol my-snap
• Change volume layour (v 3.0) / vxassist -g my-dg relayout my-vol layout=stripe
• Convert volume type (v 3.0) / vxassist -g my-dg convert my-vol layout=stripe-mirror

stripe-mirror and concat-mirror = RAID 1+0

mirror-stripe and mirror-concat = RAID 0+1

Mirroring system disk

• Initialise disk / vxdisksetup -i c0t8d0
• Add disk to rootdg / vxdg adddisk rootmirror=c0t8d0
• Create system disk mirror / vxmirror rootdisk rootmirror
• Enable devalias in eeprom / vxeeprom enable
• Boot from mirror disk / boot vx-rootmirror (at prom)
• Show disk booted from / prtconf -vp | grep bootpath
• Removing from VM / vxunroot , then reboot..

Monitoring and Performance

• List running tasks / vxtask -g my-dg list or vxtask list
• Pause running task / vxtask -g my-dg pause taskid
• Display volume statistics / vxstat -g my-dg -c 5 -i 10 -v (-s=sd, -p=plex)
• Display volume operations / vxtrace -g my-dg -c 5 -t 30 -o v (-s=sd, -p=plex)