3PAR InForm® OS 2.3.1 CLI Administrator's Manual (320-200180 Rev B, February 2010)

13.17
Task Types
InForm OS Version 2.3.1 3PAR InForm CLI Administrator’s Manual
13.3.9 tunevv_rollback
The tune_vv_rollback task type is used to track
tunevv rollback operations performed with the 3PAR System Tuner tunevv rollback
command. The
tunevv rollback command enables you to reverse any changes that resulted
from a previously interrupted
tunevv operation.
The following examples shows how to start, cancel, and then rollback a
tunevv operation on
virtual volume
testvol:
Note that the
tune_vv_rollback task is a new task and takes a new task ID number.
You cannot start a
tune_vv_rollback task for a tunevv operation that completed
successfully. The following error message appears:
For
tune_vv_rollback tasks, there are two phases:
■ Phase 1: performing the actual region moves.
■ Phase 2: deleting the information stored in Phase 1 of the corresponding tune_vv task.
The number of steps in the phase is equal to the number of regions being moved.
For more information on 3PAR System Tuner and the
tunevv command see Chapter 16,
Performance Tuning, and the InForm OS Command Line Interface Reference.
cli% tunevv -t r5 -ha mag testvol
Task 3 started.
cli% canceltask 1
Are you sure you want to cancel task 3?
select q=quit y=yes n=no: y
cli% tunevv -rollback testvol
Task 4 started.
cli% tunevv -rollback testvol2
Are you sure you want to rollback the tune process for VV 'testvol2' ?
select y=yes n=no: y
Command failed
error: No restart state for VV testvol2.