Wido den Hollander
63cdc92f04
storage: Add TRIM algorithm to storage volume API
...
This new algorithm adds support for wiping volumes using TRIM.
It does not overwrite all the data in a volume, but it tells the
backing storage pool/driver that all bytes in a volume can be
discarded.
It depends on the backing storage pool how this is handled.
A SCSI backend might send UNMAP commands to remove all data present
on a LUN.
A Ceph backend might use rbd_discard() to instruct the Ceph cluster
that all data on that RBD volume can be discarded.
Signed-off-by: Wido den Hollander <wido@widodh.nl>
2016-01-29 11:09:14 -05:00
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