space to existing servers.
It could be by way of storage device like EMC
or an additional Hardisk.
Assuming that we need to create filesystems intended for
an Application and:
We have 9 disks, c0t0d1 through ....................c0t0d9.
First Check if Veritas Volume Manager has seen the Disks
that you have attached :
#vxdisk -o alldgs list
if not, try the following, and then repeat the previous step:
This should be able to detect disks into VVM.
Steps for setting up storage - Veritas Volume Manager
1) It is important to create a diskgroup, so that VVM can be
moved to a different hosts.
Disk Groups includes filesystems/disks of the applcations.
Commands (vxdiskadd or vxdg).
#vxdg init diskgroup diskname=device
#vxdg init ABCdg ABCdg01=c0t0d1
2) Creating Volumes with vxassist:
# vxassist -g diskgroup make vol_name size
#vxassist -g ABCdg make ABC01 8g
Note: Understanding the contents of the /etc/default/vxassist file is important, especially when striping disks.3) Creating a VXFS filesystem:
#mkfs -F vxfs -o bsize=8192,largefiles /dev/vx/rdsk/ABCdg/ABC01
4) Mounting the VXFS file system.
Creating and mounting filesystems go hand in hand. You must be certain that any special flags set at creation time are reflected in /etc/vfstab, or on the command line if there is no entry in vfstab for your filesystem.
mount -F vxfs -o largefiles /dev/vx/dsk/ABCdg/ABC01 /u03/oradata/ABCPlease check this link for more reference ...
Note : In Case of emergency if you need to move your entire VVM to a
different host then vxdg 'deport' and 'import' commands to
migrate an entire vxvm disk group to another host.
PS : I have VVM pdf , complete summary of commands ,
let me know if interested, I can send it across.