[dm-devel] DM_snapshot_cow filesystem (dmsetup create snapshot)
Frederick Grose
fgrose at gmail.com
Sun Nov 27 22:31:25 UTC 2011
On Sat, Oct 29, 2011 at 4:49 PM, Alasdair G Kergon <agk at redhat.com> wrote:
> markmc did some code that shows how to read the format a few years ago
> here:
> http://people.gnome.org/~markmc/code/merge-dm-snapshot.c
>
> Otherwise look at dm-snap-persistent.c in the kernel tree.
>
> Alasdair
Users can easily exhaust a LiveUSB snapshot overlay by writing
too many changes to the OS filesystem, such as by performing
a yum update.
Would such an 'exhausted' overlay be amenable to some sort of
data recovery or forensics?
If so, how so; if not, why not?
(or suitable references)
Thanks, --Fred
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