On Tue, Dec 01, 2015 at 05:36:27PM +0800, Fam Zheng wrote: > This is basically a supplementary fix of 06c3916b. > > On 512 disks, the crash only happens when copy-on-read is enabled, which is > covered by the previou fix. But on 4k disks the write request that triggers > the notifier itself may be serialised, in which case the read req from > backup_do_cow will still be serialised in bdrv_aligned_preadv, resulting in > the > same assertion failure. > > Fam Zheng (3): > block: Don't wait serialising for non-COR read requests > iotests: Add "add_drive_raw" method > iotests: Add regresion test case for write notifier assertion failure > > block/backup.c | 2 +- > block/io.c | 12 +++++++----- > include/block/block.h | 4 ++-- > tests/qemu-iotests/056 | 25 +++++++++++++++++++++++++ > tests/qemu-iotests/056.out | 4 ++-- > tests/qemu-iotests/iotests.py | 5 +++++ > trace-events | 2 +- > 7 files changed, 43 insertions(+), 11 deletions(-) > > -- > 2.4.3 >
Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan
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