2.0 upgrade experiences

[Teemu Likonen]

On 2009-08-12 07:36 (+1000), Robert Collins wrote:
> You will have content in .bzr/repository/obsolete-packs that will get
> cleaned up when you make subsequent commits. We do this to deal with
> various edge cases without requiring fsync/fdatasync operations (which
> are either a) expensive, or b) [on XFS and MacOSX] don't work).

What if I never commit? Currently my use of bzr is only "bzr pull", and
it creates new pack files too. If I execute "bzr pack" do the obsolete
packs remain in the repository forever? (Or until the next "bzr pack"
but it will create new obsolete packs.)