Reconfiguring vPars v6 memory with zero downtime

5. A memory add or delete and CPU add or delete operation cannot be performed in the same command when the vPar is

Online. Hence, memory add or delete and cpu add or delete must be separated into two commands as following:

# vparmodify -p <vPar> -a cpu::<cores>

# vparmodify -p <vPar> -d mem::<amount>:f

Alternatively,

# hpvmmodify -P <vPar _ name> -a cpu::<cores>

# hpvmmodify -P <vPar _ name> -d mem::<amount>:f

However, for a live partition, base memory add and oating memory modify operations can be performed in the same

command; provided that the oating memory modify operation resulted in addition of oating memory.

# vparmodify -p <vPar> -a mem::<amount>:b -m mem::<amount>:f

Alternatively,

# hpvmmodify -P <vPar _ name> -a mem::<amount>:b -m mem::<amount>:f

6. A cancel operation is supported only for the last pending memory OL* operation.

# vparmodify -p <vPar> -C

Alternatively,

# hpvmmodify -P <vPar _ name> -R

7. When upgrading vPars from earlier product versions, the total memory of the vPar would be marked as base memory

in the new conguration le.

8. If a VM guest is transformed into a vPar, then the total memory of the VM guest will be associated as base memory in

the vPar conguration.

9. If a vPar with oating memory is transformed to a VM guest (using hpvmmodify ‘vm _ type’ option), the total memory

(base + oating) will be associated with the VM guest. It will continue to operate with original base and oating memory

conguration if reverted to a vPar again. However, if any memory operation was performed on the VM guest using

hpvmmodify –r option, the total memory will be treated as base memory when the guest is transformed to a vPar.

10. Base and oating memory of a partition is updated according to the following rules when hpvmmodify –r option is

used to modify the total partition memory.

# hpvmmodify -P <vPar _ name> -r <amount>

A. If the specied amount of memory is greater than the current total memory then oating memory is incremented.

B. If the specied amount of memory is less than the current total memory then oating memory is decremented rst

and if required based memory is also decremented.

C. For a live partition, online memory modication will not be performed, if the modify operation resulted in the

decrement of base memory.

Technical white paper | HP-UX vPars and Integrity VM v6.2