Configuration File Examples

Appendix D Quality of Service Guide

Non-Realtime I/O Configuration

time. Non-RTIO requests on clients with an RVIO reservation is subject to the same throttling mechanism as non-RTIO requests on normal clients.

4Other active non-RTIO clients equally share the bandwidth left over after the possible RTIO and RVIO allocations. If no bandwidth is left, the minimal reserved bandwidth (defined in the stripe group section of the file system configuration file) is used.

A central configuration file has multiple entries, and each entry defines the RVIO reservation for a client. Following are the fields of an entry:

host bw-type sg=yy,[sg=yy]

host is the host name, IP address (either V4 or V6), or FQDN, etc. of the client. The host name should be able to be resolved (converted to a valid IP address) by the FSM server.

bw-typeis the type of bandwidth to be specified. There are two bandwidth type options:

qosmb means the subsequent value for bandwidth reservation uses MB/s (megabytes per second) as the unit of measure.

qosios means the subsequent value for bandwidth reservation uses IOs/s (inputs/outputs per second) as the unit of measure.

sg stands for stripe group. You may specify a stripe group by entering the stripe group name, or by stripe group number starting from 0 for the first stripe group. If you'd like to specify the same RVIO bandwidth reservation for all eligible stripe groups, you can use the asterisk wildcard in the format *=yy.

Any line in the configuration file starting with the pound sign (#) is considered a comment line and is not executed.

For additional information about entering the configuration file for QOS, see the man page called qos_config.1.

Following are some example configuration file entry examples:

box1.xyz.com qosios 2=200,4=50,sg5=45

10.10.1.8qosmb *=60

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Quantum 3.5 manual Configuration File Examples, Host bw-type sg=yy,sg=yy