04d5971b3b
The shred option was deprecated in Newton and has been removed. This updates the volume wiping instructions to reflect that change and corrects a few of the referenced URLs. Change-Id: I251a07525bec5f099220d41fafb1fce3d738e3cb
1.5 KiB
Volume Wiping
There are several ways to wipe a block storage device. The
traditional way is to set the lvm_type to
thin, and then use the volume_clear parameter
if using the LVM backend. Alternatively, if the volume encryption
feature is used, then volume wiping is not necessary if the volume
encryption key is deleted. See the OpenStack Configuration Reference doc
in the Volume
Encryption section for set up details and also the Castellan
usage document for key deletion.
Note
In older OpenStack releases, lvm_type=default was used
to signify a wipe. While this method still works,
lvm_type=default is not recommended for setting secure
delete.
The volume_clear parameter can be set to
zero. The zero argument will write a single
pass of zeroes to the device.
For more information about the lvm_type parameter, see
sections LVM
and Oversubscription
in thin provisioning of the cinder project
documentation.
For more information about the volume_clear parameter,
see section Cinder
Configuration Options of the cinder project
documentation.