On Wed, Jun 10, 2015 at 7:04 PM, Alexandre DERUMIER <aderum...@odiso.com> wrote: >>>Sorry, forgot to mention - of course I`ve pulled all previous >>>zeroing-related queue, so I haven`t had only the QMP-related fix >>>running on top of the master :) > > Hi, I had a discussion about rbd mirroring, detect-zeroes and sparse target, > some months ago with paolo > > http://qemu.11.n7.nabble.com/qemu-drive-mirror-to-rbd-storage-no-sparse-rbd-image-td293642.html > > Not sure it's related but > > "Lack of bdrv_co_write_zeroes is why detect-zeroes does not work. > > Lack of bdrv_get_block_status is why sparse->sparse does not work > without detect-zeroes. >
Yes, I remember this one and the recent queue pull was the reason for me to re-test it, despite the current patch variant would more likely to be updated by comments from Eric, the behavior for non-file backends like rbd can/will stay the same.
