Changing the miniops and maxiops QoS parameters from the command line


Changing the miniops and maxiops QoS parameters from the command line
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HyperScale ensures that your virtual machines perform at a consistent quality of service (QoS). Two parameters (miniops and maxiops) define the minimum and maximum number of I/Os per second (IOPS) for the vDisk. To define the QoS for your virtual machine, you can do one of the following:

Assign it a HyperScale flavor, which includes minimum and maximum IOPS values.
Set (or change) the miniops and maxiops values from the command line using the hyperscale qos-sla-update command.

This section describes the second approach.

The format of the hyperscale qos-sla-update command is:

hyperscale qos-sla-update [--miniops min_iops] \
[--maxiops max_iops] vdisk_id

To change the quality of service parameters from the command line

Obtain the ID of the vDisk whose QoS you want to change.
- Navigate to Project > Compute > Volumes.
- In the Volumes table, click the instance name.
- On the Volumes details page, on the Overview tab, note the ID. That is the vDisk ID to use.
Run the hyperscale qos-sla-update to modify one or both of the QoS parameters. For example, the following command sets the minimum IOPS for the vDisk to 100.
```
# hyperscale qos-sla-update --miniops 100 \
01310622-28a9-4fa1-bcb7-9c3d4dea8765
```
The following command sets the maximum IOPS to 1000.
```
# hyperscale qos-sla-update --maxiops 1000 \
01310622-28a9-4fa1-bcb7-9c3d4dea8765
```