On 07/19/2016 02:53 AM, Paolo Bonzini wrote: > >> The upstream NBD protocol is proposing an extension for efficient >> write zeroes; having a qemu implementation will be one of the reasons >> to promote the proposal from experimental to standard: >> https://github.com/yoe/nbd/blob/extension-write-zeroes/doc/proto.md >> >> v4 was here: >> https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg07463.html >> >> Prerequisites: >> v3 Auto-fragment large transactions at the block layer: >> https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg03550.html >> v2 byte-based block discard: >> https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg03592.html >> >> Also available as a tag at: >> git fetch git://repo.or.cz/qemu/ericb.git nbd-zero-v5 >> >> changes since v4: >> - patch 2 - Rebase to latest >> - patch 6, 10 - Address review comments [Paolo] >> - patch 14 - Update commit message to address review comments [Paolo] > > I'm sorry, it's too late for 2.7 now.
Fair enough. I'll pull out the bug fixes (at least 1/14 is still 2.7 material) and re-submit those along with the other pending block bug fixes that I need to do in hard freeze (iscsi with the 15M unmap/zero granularity). -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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