Failure of available pool capacity formatting and pool capacity increase

Pool capacity formatting and increase can fail in some circumstances.

The following are the circumstances under which the available pool capacity is not formatted and the available pool capacity is not increased:

• You are formatting a pool-VOL other than the one that you have selected to format.

  For more information about formatting LDEVs, see the Provisioning Guide for your storage system.

• The pool usage rate has reached the warning threshold (see Editing the data pool warning threshold).
• The I/O loads on the storage system are high.
• One of the following is blocked:
  • The selected pool.
  • The cache memory.
  • The pool-VOLs in the selected pool.
  • The external pool-VOLs in the selected pool.
• The access attribute on the pool-VOL in the selected pool has been corrected.
• You are not operating the format function for available pool capacity.

The following are circumstances under which the formatted pool capacity might decrease:

• New pages are being allocated.
• Correction copy is being executed.