Comment 38 for bug 1415087

On Wed, Apr 01, 2015 at 10:00:13AM -0000, Duncan Thomas wrote:
> Bastian: The problem is, in a few cases, we don't know the storage
> format for sure. For filesystem based starge, nova can and does change
> the format during certain operations, without telling cinder.

This are "few cases". So you can fix the known cases, properly document
the cases where you may not know. But I want to have some informations:
- the code location of this stabbing cinder in the back and
- the db location nova itself stores this information (or does it always
  fall back to sniffing, which means all qemu calls needs to be audited
  as well).

> This is
> something we're working on fixing, and I agree it is a better fix, but
> it isn't going to be quick or simple.

So fix the locations that are easy and properly set the type to
undefined if you don't know. I don't really think lvm/iscsi backed
volumes will be changed in this way.

It's been over two months now without any real progress. Now you claim
it can't be fixed, only worked around. So I don't consider waiting any
longer will help and think about publishing this issue after easter.
So, if there have been CVE assigned please document them, otherwise I
will take care of that.

Regards,
Bastian

--
Most legends have their basis in facts.
  -- Kirk, "And The Children Shall Lead", stardate 5029.5