Add VxVM packages, then start vxconfigd in disabled mode.
# vxconfigd -d

Initialize the /etc/volboot file.
# vxdctl init

Make a new rootdg group.
# vxdg init rootdg

Add simple slice to the /etc/volboot file.
# vxdctl add disk c0t0d0s3 type=simple

Note: You'll get the following message here - you can ignore it
"Warning: device c0t0d0s3: not currently in the configuration"

Add disk record.
# vxdisk -f init c0t0d0s3 type=simple

Add disk name to rootdg disk group.
# vxdg adddisk c0t0d0s3

Enable transactions.
# vxdctl enable

Remove the install-db file, if present.
# rm /etc/vx/reconfig.d/state.d/install-db



Un-Encapsulating the boot disk

The boot disk can be un-encapsulated by using the veritas volume manager vxunroot command, but before using the vxunroot command the following things should be taken care :

1. All boot disk volumes have been unmirrored
Example: vxplex -g rootdg -o rm dis rootvol-02 swapvol-02 var-02

2. All non-root file systems, volumes, plexes and subdisks on boot disk have been removed, vxunroot takes care of only file system in boot disk are root, swap, var, usr

The vxunroot command performs the following :

1. Returns the boot disk partition map to its original state

2. Returns /etc/vfstab file to its original state

3. Returns /etc/vfstab file to its original stat

4. Returns the OpenBoot prom device aliases to thier original state



Task monitor command

vxstat command is used to display statistical information for VM physical and logical objects:

Displays volume statistics for a given disk group
# vxstat -g <disk_group>

Displays statistics for a given volume
# vxstat -g <disk_group> <volume_name>

Displays disk level statistics for a given disk group
# vxstat -g <disk_group> -d

Displays statistics for specific disk
# vxstat -g <disk_group> -d <disk_name>


vxtrace command displays detailed information on disk I/O operation

Trace all physical disk I/O operation
# vxtrace -o disk

Trace all I/O operation on specified disk
# vxtrace -o disk <disk_name>

Trace I/O operation on a specified volume
# vxtrace <volume_name>

Trace disk device I/O activities associated with a given volume
# vxtrace -o dev <volume_name>



Stopping the vmsa server

/opt/VRTSvmsa/bin/vmsa_server -k


Enabling and Disabling hot-spare feature

To enable the hot-spare feature in vxvm edit the /etc/rc2.d/S95vxvm-recover file and comment out the vxrelocd root & line and uncomment the #vxsparecheck root & line