On 11/14/2016 09:54 AM, Kevin Wolf wrote: >>>> Our qcow2 support is currently limited to a maximum of 2M clusters; >>>> while MAX_WRITE_ZEROES_BOUNCE_BUFFER is 32k * 512, or 16M. The >>>> maximum-size bounce buffer should not be the problem here; but for some >>>> reason, it looks like alignment is larger than max_transfer which should >>>> not normally be possible. I'm still playing with what should be the >>>> right patch, but hope to have something posted soon. >>> >>> Are you still playing with it? >> >> Patch was posted here: >> >> https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg01603.html > > Ah, yes, sorry. I didn't make the connection today because this one had > qcow2 in the subject line and the patch doesn't. > > Are you going to add a qemu-iotests case then, or do you want us to > merge the patch as it is?
I think the patch is ready to merge as-is; I'm still adding a qemu-iotests addition, but the addition requires enhancing blkdebug which is a bit extreme to be doing after soft freeze (so the tests are probably 2.9 material, while the bug fix is still for 2.8) -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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