On 04/10/2012 06:20 PM, Shawn Davis wrote: > Hello all, > > > > I know libvirt has the following two commands: > > > > vol-wipe calls virStorageVolWipe or virStorageVolWipePattern (depending on arguments), which overwrites the existing data with all 0 or with a specific pattern. The file stays intact, but future uses of the file will no longer see the data that had been there previously. > > > > vol-delete calls virStorageVolDelete, which removes the file but does not wipe it (so the data is still present on the backing storage device). > > > > Can someone please explain to me how these function? Do these only remove > previous session data so that a new virtual instance cannot see it or does > it remove it at the physical level level too so that the data cannot be > found anywhere on the physical drive? If you want the data removed at the physical layer, use vol-wipe. -- Eric Blake eblake@xxxxxxxxxx +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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