On Wed, Jun 22, 2016 at 03:51:01PM -0400, John Snow wrote: > e5b43573 caused a regression in the preparation of our IO vectors, such > that if a small granularity but a large buffer size is chosen, we may > accidentally exceed MAX_IOV and the request will fail. > > This has been fixed before in cae98cb8, and now we'll fix it again. > To keep it fixed, we'll add an iotest this time. > > [Thanks to Max for finding the root cause.] > > John Snow (3): > mirror: clarify mirror_do_read return code > mirror: limit niov to IOV_MAX elements, again > iotests: add small-granularity mirror test > > block/mirror.c | 10 ++++++++-- > tests/qemu-iotests/041 | 30 ++++++++++++++++++++++++++++++ > tests/qemu-iotests/041.out | 4 ++-- > 3 files changed, 40 insertions(+), 4 deletions(-) > > -- > 2.4.11 >
Thanks, Applied to my block branch: git://github.com/codyprime/qemu-kvm-jtc.git block -Jeff
