calculate free space in veritas volume.

# vxdg list
NAME         STATE                ID
ossctedbdg   enabled,cds          1313610087.29.ossdhcp01

Method 1:

# vxdg -g ossctedbdg free

DISK         DEVICE       TAG            OFFSET    LENGTH   FLAGS
ossctedbdg32 xp24k0_08d4 xp24k0_08d4      10401792  256      -
ossctedbdg33 xp24k0_08d5 xp24k0_08d5      10401792  256      -
ossctedbdg34 xp24k0_08d6 xp24k0_08d6      10401792  256      -
ossctedbdg35 xp24k0_08d7 xp24k0_08d7      10401792  256      -
ossctedbdg36 xp24k0_08d8 xp24k0_08d8      10401792  256      -
ossctedbdg43 xp24k0_08ba xp24k0_08ba      419346432 256      -
ossctedbdg213 xp24k0_0081  xp24k0_0081  104943872 942862992  -


Lenth*512/(1024*1024) = value in MB

in this case :  942862992*512/1024*1024=460383

 
Method 2:

# vxassist -g ossctedbdg maxsize
Maximum volume size: 942864384 (460383Mb)