inter-format push to remote 2a branch does packing on local end

The attached extract from .bzr.log was produced by running:

naesten@hydrogen:~/hacking/bzr-repo/dev% ~/hacking/bzr.dev/bzr -Dhpss -Dpack -Dindex -Dhpssvfs push -r 1500 bzr+ssh://bazaar.launchpad.net/~naesten/bzr/dev.2a

The local format is:

naesten@hydrogen:~/hacking/bzr-repo/dev% bzr info -v
Repository branch (format: unnamed)
Location:
  shared repository: /home/naesten/hacking/bzr-repo
  repository branch: .

Related branches:
    push branch: bzr+ssh://bazaar.launchpad.net/~naesten/bzr/20090714-foreign-comment/
  parent branch: bzr+ssh://bazaar.launchpad.net/%7Ebzr/bzr/trunk/

Format:
       control: Meta directory format 1
        branch: Branch format 7
    repository: Packs containing knits with rich root support

[...]

And I guess you'll have to get the remote format from the log since I can't get an accurate one from 'bzr info'.

Anyway, it appears that almost all changes to the branch are going by VFS, which is pretty slow, and uses lots of RAM, and ... isn't very smart :-(.