[dm-crypt] expanding encrypted volume/growing the volume

Robert Nichols rnicholsNOSPAM at comcast.net
Wed Sep 10 03:59:03 CEST 2014

On 09/09/2014 04:52 PM, Ross Boylan wrote:
>   The FAQ advises wipeing it, though the
> only explicit reasons seem not much of a concern for space in a volume
> group (but later there are references to attacks available if the
> attacker can determine which sectors are unused).  As far as I know
> there is no way to access the unused area of the volume group ...

Easy.  Create a new LV in that VG and use "--extents 100%FREE" as
its size.  Fill that LV with whatever variety of random data you
choose, then delete that LV and use the space to expand your active

Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.

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