Comment # 7 on bug 1183948 from Luciano Santos

I've managed to replicate the "Failed to create DM task for the cache map"
output even without having cached volumes. So it came to me that we probably
were lacking some package(s) and compared our Spec file with Fedora's -- since
libblockdev's developers are Red Hat's employees, and noticed some differences,
apart from the main packaging differences between Fedora and openSUSE.

So, I'm going to employ those differences I saw. The most notable being in lvm2
package that must be rebuild with DBus support. When I get -- if I get, to the
point where the `lvm-cache-stats` gives me the correct error message telling me
I don't have any cached volumes then I'll release a package for testing.

This all happened because the only reason we packaged libblockdev was to
satisfy udisks2's new run time dependency on it, not because some/many people
needed it for development. It started depending on libblockdev at some point
between versions 2.6.5 and 2.7.5 of udisks2, but the lmv-cache-stats tool only
came later and, I guess, nobody really tested it. But if all goes well we
should get this problem fixed now :-)