6.28 Fstrim Pool

fstrim pool <pool_name>

It is used on a mounted pool to discard (or trim) blocks which are not in use by the pool. You must use this option only on thin-provisioned storage devices.

nlvm [nlvm_options] fstrim pool <pool_name>

Command Option

pool_name

Mandatory. Specify the name of the NSS pool.

Example

MYPOOL1

Command Examples

nlvm fstrim pool MYPOOL1: Trims the unused blocks in the NSS pool named MYPOOL1 and then displays the trimmed size in bytes.
nlvm fstrim pool MYPOOL1 async: Trims the unused blocks in the NSS pool named MYPOOL1 asynchronously. For more information on the trimmed size in bytes, see logs at /var/log/messages.