HP 3PAR OS 3.1.3 Command Line Interface Reference

-waittask
Wait for all tasks created by this command to complete before returning.
SPECIFIERS
None
EXAMPLES
In the following example:
• VVs will be re-balanced between nodes if there is an imbalance in space usage between
nodes of more than 5% (nodepct value).
• PD chunklets will be re-balanced on each node if any disk has usage less than 20% than the
average chunklet usage (chunkpct value).
• A maximum of 4 tune tasks will be run at a time (maxtasks value)..
• A maximum of 5 chunklets will be moved at a time (maxchunk value).
cli% tunesys -f -nodepct 5 -chunkpct 20 -maxchunk 5 -maxtasks 4
Task 999 started
NOTES
• When the -cpg option is used, if the user space and snap space of a virtual volume are from
different CPGs, then only the space associated with the named CPG will be tuned. Also, no
tunes will be generated for any virtual volumes outside of CPGs.
• When the -cpg option is used or when the user does not have All Domain privileges, intra-node
analysis and tuning will not take place and the maxchunk is ignored. Intra-node tunes need
access across all CPGs and all domains to work correctly.
• When cancelling a tunesys command task, the canceltask command can return before
a cancellation is completed. Therefore, resources reserved for the task might not be immediately
available. This can prevent actions such as restarting the canceled tunesys command task
for a few minutes.
• tunesys runs between 1 and 3 phases depending on the options specified.
Phase 1 - Analyzes and rebalances space usage between nodes (referred to as inter-node
tuning).
◦
◦ Phase 2 - Analyzes and rebalances space between disks associated with each node
(referred to as intra-node tuning).
◦ Phase 3 - LD re-layout tunes. LDs where the current characteristics differ from the associated
CPG are re-laid out to match the CPG.
• When tunesys is running, showtask will show the current and maximum number of phases
for the task. The steps displayed are the number of subordinate tunes that need to be run to
complete that phase. For example, a showtask step and phase display of 1/3 4/39 indicates
that tunesys is in phase 1 of 3 (inter-node), tune 4 of 39.
• Only one tunesys task can be active at a time. A dry run can be performed while tunesys
is active.
654 Tune Commands