Managing the Cohesity provisioning file system (VPFS) configuration parameters
The Cohesity provisioning file system (VPFS) is a service for Instant Access and Universal Shares. The default VPFS configuration works for most environments. However, you can adjust the parameters if needed. Some of the parameters that may affect performance include:
numOfInstance
This parameter specifies the number of vpfsd instances. A universal share uses one vpfsd instance by default. In most cases, one instance is adequate. Increasing the number of vpfsd instances might improve universal share performance, although it also requires more CPU and memory. You can increase the number of vpfsd instances from 1 to up to 16 and distribute the shares cross all the
vpfsdinstances.CloudCacheSize
This parameter specifies the local disk cache size. This option applies only to Universal Shares with object store and Instant Access with object store.
Use the following procedures to manage the VPFS configuration parameters.
To view a VPFS configuration parameter
- Open an SSH session to the server.
- Run the following command:
setting vpfs-config get-vpfs-param vpfs_configkey=<parameter>
Where <parameter> is the parameter that you want to view.
To change a VPFS configuration parameter
- Open an SSH session to the server.
- Run the following command:
setting vpfs-config set-vpfs-param vpfs_configkey=<parameter> vpfs_configvalue=<value>
Where <parameter> is the parameter that you want to change, and <value> is the value that you want to change it to. For example:
setting vpfs-config set-vpfs-param vpfs_configkey=numOfInstance vpfs_configvalue=2
To temporarily change the log level of a VPFS share
- Open an SSH session to the server.
- Run the following command:
setting vpfs-config set-log-level vpfs_loglevel=<level> vpfs_shareid=<share ID>
Where <level> is debug, information, or error, and <share ID> is the ID of the share that you want to change the log level of. For example:
setting vpfs-config set-log-level vpfs_loglevel=debug vpfs_shareid=my-db-share
Note:
This command is meant for a short debugging session, and the change is not preserved if you restart the instance. To permanently change the log level, use the following command:
setting vpfs-config set-vpfs-param vpfs_configkey=logLevel vpfs_configvalue=<level>
The default log level is information.