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.
zpoolprops(7),
zpool-initialize(8),
zpool-wait(8)