[Libguestfs] Planned libguestfs versions in Fedora 12-15, EPEL 5

[Richard W.M. Jones]

Fedora 15 (Rawhide): Development branch 1.5.x.

  As usual, this follows the current development versions (currently
  1.5.5).

Fedora 14: Development branch 1.5.x.

  When Fedora 14 branched from Rawhide a month back, we inadvertently
  branched at a development version (1.5.2).  We couldn't go back to
  the stable branch (1.4.x) without bumping the RPM Epoch.  In the
  meantime Fedora 14 got a new kernel (2.6.35) which has a massive
  performance regression with a particular qemu feature that we relied
  on.  We had to do a lot of work last week to work around this in
  libguestfs.  Since we've fixed this problem, I plan to just keep on
  the development branch for Fedora 14.  By upgrading to >= 1.5.4 we
  work around the performance issue, and get many more people testing
  the development version into the bargain.

Fedora 13: Stable branch 1.4.x + backports

  Fedora 13 + febootstrap 2.8 + libguestfs git is the sweet spot for
  performance right now.  Because of the non-broken kernel plus the
  performance improvements we've made upstream, the appliance boot
  times are under 5 seconds.

  Therefore I intend F13 to stay on the stable 1.4.x branch, and
  backport some major features from 1.5.x:

    - inspection code in C (improves performance of guestfish -i)
    - ext2-based appliance (performance fix)
    - virtio-serial (faster daemon communications)

  and some minor features required by virt-v2v too.  This is very
  much going to be a test for a possible RHEL 6.1 version.

Fedora 12: Old stable branch 1.2.x.

EPEL 5: Old stable branch 1.2.x.

  EPEL 5 is following the old stable 1.2.x branch, and I don't plan to
  change that, except to push more stable versions along this branch.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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