[Qemu-devel] KVM call minutes for Sept 7

[Chris Wright]

0.13 schedule
- RSN
- rc1 uploaded, tagged in git (and tag should actually be there now)
- announcement once it propagates
- 0.13.0 should be 1 week after rc1 announcement
- please check rc1 for any missing critical patches

qed
- concession that qcow2 is complicated and hard to get right
- it's much more efficient than qcow2
- not had data integrity testing, but simple enough design to
  rationalize the format and meta-data updates
- formal spec planned...documented on wiki http://wiki.qemu.org/Features/QED
  - design doc written first, code written to design doc
- defragmentation supportable and important (not done now)
- defragmented image should be as fast as raw
- concern about splitting install base (doubles qa effort, etc)
  - should be possible to do an in-place qcow2->qed update
  - even live update could be doable
- what about vmdk or vhd?
  - controlled externally
  - specification license implications are unclear
  - too close to NIH?
- qed and async model could put pressure to improve other formats and
  push code out of qed to core
- another interest for qed...streaming images (fault in image extents
  via network)
  - want to design this as starting from mgmt interface discussion