3PAR InForm® OS 2.2.4 CLI Administrator's Manual (320-200113 Rev A, March 2009)

13.11
Task Types
InForm OS Version 2.2.4 3PAR InForm OS CLI Administrator’s Manual
copy volume groups using the startrcopygroup command can also initiate a remote copy
synchronization on the system. However, note that with periodic mode volume groups the
startrcopygroup command will only initiate synchronization the first time that it is issued
for that volume group. In addition, periodic mode remote copy volume groups may be
automatically resynchronized by systems using 3PAR Remote Copy, but only if the
resynchronization period has been set for the volume groups.
For
remote_copy_sync tasks, there are three phases:
Phase 1: (startup): sync request has been received and synchronization is scheduled to start.
Phase 2: performing the resynchronization.
Phase 3: copying has completed and cleanup (such as deleting snapshots and setting state
values) is taking place.
In the
showtask output, the Step column indicates the completed and total volume size, in
MBs, using the format
<completed_size>/<total_size>.
Note that for remote copy synchronizations, in the
showrcopy output, the finish time for the
resynchronization task may not match the LastSync column in the
showrcopy command
output for the system holding the primary volumes. This is because the times are taken at
different points. The task time is set by the task subsystem when it is marked as
completed,
whereas the
LastSync time is set when remote copy completes the sync. These two times
should be similar, but may differ by up to a few seconds.
You cannot use the
canceltask command to cancel a remote copy synchronization task.
For details about volume synchronizations and remote copy commands, see the Remote Copy
User’s Guide.