Performance enhancements in ONTAP 8.3.1
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There have been some enhancements to FLI to better manage performance and stop workload starvation from occurring. FLI enhancements in ONTAP 8.3.1 include a new throttle command and LUN import show enhancements showing throughput and QoS policy groups.
The LUN import throttle
command is used to limit the maximum speed at which an import can run.
cluster::*> lun import throttle -vserver fli_72C -path /vol/flivol/72Clun1 -max-throughput-limit {<integer>[KB|MB|GB|TB|PB]} Maximum Throughput Limit (per sec)
Use the instance
switch with lun import show
to display extended LUN import information, including throttle and QoS information.
cluster::*> lun import show -instance Vserver Name: fli_72C LUN Path: /vol/flivol/72Clun1 Foreign Disk Serial Number: D0i1E+G8Wg6m Import Home Node: ontaptme-fc-cluster-01 Import Current Node: ontaptme-fc-cluster-01 Operation In Progress: import Admin State: stopped Operational State: stopped Percent Complete: 0 Blocks Imported: - Blocks Compared: - Total Blocks: 6297480 Estimated Remaining Duration: - Failure Reason: - Maximum Throughput Limit(per sec): - Current Throughput (per sec): - QoS Policy Group: -
The values for the current throughput
show the current rate of throughput of import or verify operations. Users should check this before setting a throttle value. It is empty when not running. The QoS policy group
shows the QoS group if the LUN import throttle was used.