In the hammer release, the python-ceph package was split into three
separate packages: python-rados, python-rbd, python-cephfs [1]. In rpm,
a "python-ceph-compat" metapackage was introduced for backwards
compatibility (with Provides: python-ceph), while in deb the python-ceph
package was converted into a metapackage.
Now, in PR#9757 [2] we are exploring the possibility of dropping
python-ceph-compat entirely, since we don't want to have it hanging
around forever.
In preparation for this, a teuthology commit was merged [3] to modify
the default package list (replacing "python-ceph" with the three
post-split packages). This had the unintended consequence of breaking
tests that start by installing firefly and then later upgrade to a more
recent version (there are a number of these). This bug is tracked in [4].
I'm hereby seeking opinions on how to address this.
One way would be to override the package list in those tests, so it
doesn't include any "python-*" packages at all. This would work provided
none of those tests actually need to use the python bindings (?).
Another possibility is to override the default package list for those
tests, replacing "python-{rados,rbd,cephfs}" with "python-ceph". That
will enable firefly/dumpling installation to succeed, but I'm worried
that at least those tests that upgrade to master (kraken+) would fail in
the cleanup phase because it would be impossible to remove "python-ceph".
A third possibility would be to modify teuthology to make it aware of
package splits, and enable it to automatically override the package list
as needed.
Finally, we could just keep the "python-ceph" (deb) and
"python-ceph-compat" (rpm) packages "forever", i.e. for as long as we
have tests that start by installing pre-hammer versions.
[1] https://github.com/ceph/ceph/pull/3788
[2] https://github.com/ceph/ceph/pull/9757
[3] https://github.com/ceph/teuthology/commit/4543fb64
[4] http://tracker.ceph.com/issues/17075
--
Nathan Cutler
Software Engineer Distributed Storage
SUSE LINUX, s.r.o.
Tel.: +420 284 084 037
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