zpool-trim —
initiate TRIM of free space in ZFS storage pool
zpool |
trim [-dw]
[-r rate]
[-c|-s]
pool [device]… |
Initiates an immediate on-demand TRIM operation for all of the
free space in a pool. This operation informs the underlying storage devices
of all blocks in the pool which are no longer allocated and allows thinly
provisioned devices to reclaim the space.
A manual on-demand TRIM operation can be initiated irrespective of
the autotrim pool property setting. See the documentation
for the autotrim property above for the types of vdev
devices which can be trimmed.
-d,
--secure- Causes a secure TRIM to be initiated. When performing a secure TRIM, the
device guarantees that data stored on the trimmed blocks has been erased.
This requires support from the device and is not supported by all
SSDs.
-r,
--rate rate- Controls the rate at which the TRIM operation progresses. Without this
option TRIM is executed as quickly as possible. The rate, expressed in
bytes per second, is applied on a per-vdev basis and may be set
differently for each leaf vdev.
-c,
--cancel- Cancel trimming on the specified devices, or all eligible devices if none
are specified. If one or more target devices are invalid or are not
currently being trimmed, the command will fail and no cancellation will
occur on any device.
-s,
--suspend- Suspend trimming on the specified devices, or all eligible devices if none
are specified. If one or more target devices are invalid or are not
currently being trimmed, the command will fail and no suspension will
occur on any device. Trimming can then be resumed by running
zpool trim with no flags
on the relevant target devices.
-w,
--wait- Wait until the devices are done being trimmed before returning.