CP-Owned Areas and FlashCopy

If a persistent FlashCopy® relationship source extent is detected on a CP-owned volume during system IPL that is allocated as non-PERM space, warning message HCP2462I will be issued to the system operator's console.

If a persistent FlashCopy relationship target extent is detected on a CP-owned volume during system IPL that is allocated as non-PERM space, warning message HCP2463E will be issued to the system operator's console.

The ATTACH TO SYSTEM command will allow the attachment of volumes with persistent FlashCopy relationships if the relationships include non-PERM extents. However, messages HCP2462I and HCP2463E will be issued to the user issuing the command.

No further actions will be performed by z/VM® on these extents, but care should be taken with these configurations to ensure that the FlashCopy relationship is not withdrawn or resynchronized while z/VM is using these extents, especially if the extent is the target of a FlashCopy relationship. Otherwise, system instability could occur as a result of the changes made to the volume by an external source.

The Class B QUERY FLASHCOPY HARDWARE command exists to facilitate the management of persistent FlashCopy relationships.

To remove all the target relationships on a volume you can use the ATTACH rdev TO * AS vdev command to attach the volume, or use DEFINE MDISK vdev 0 END volser (if the volume is attached to SYSTEM). Then, issue a FLASHCOPY WITHDRAW TARGET vdev command.