https://bugzilla.redhat.com/show_bug.cgi?id=
1080859
Snapshot type should be no, internal, or external.
The I<--memspec> option can be used to control whether a checkpoint
is internal or external. The I<--memspec> flag is mandatory, followed
by a B<memspec> of the form B<[file=]name[,snapshot=type]>, where
-type can be B<none>, B<internal>, or B<external>. To include a literal
+type can be B<no>, B<internal>, or B<external>. To include a literal
comma in B<file=name>, escape it with a second comma. I<--memspec> cannot
be used together with I<--disk-only>.