On 2018-04-21 15:29, Max Reitz wrote:
> This series adds a copy-on-read block filter driver which works by
> simply setting the BDRV_REQ_COPY_ON_READ flag on write requests (and
> otherwise just passing everything through).
> 
> Cover letter of v1:
> http://lists.nongnu.org/archive/html/qemu-block/2018-04/msg00285.html
> 
> 
> v2:
> - Renamed the driver "copy-on-read" (from just "cor") [Stefan]
> - Commit message typo fix in patch 2 [Stefan, Berto]
> 
> 
> git-backport-diff against v2:
> 
> Key:
> [----] : patches are identical
> [####] : number of functional differences between upstream/downstream patch
> [down] : patch is downstream-only
> The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively
> 
> 001/9:[0020] [FC] 'block: Add COR filter driver'
> 002/9:[----] [--] 'block: BLK_PERM_WRITE includes ..._UNCHANGED'
> 003/9:[----] [--] 'block: Add BDRV_REQ_WRITE_UNCHANGED flag'
> 004/9:[----] [--] 'block: Set BDRV_REQ_WRITE_UNCHANGED for COR writes'
> 005/9:[----] [--] 'block/quorum: Support BDRV_REQ_WRITE_UNCHANGED'
> 006/9:[----] [--] 'block: Support BDRV_REQ_WRITE_UNCHANGED in filters'
> 007/9:[----] [--] 'iotests: Clean up wrap image in 197'
> 008/9:[0010] [FC] 'iotests: Copy 197 for COR filter driver'
> 009/9:[0004] [FC] 'iotests: Add test for COR across nodes'

Thanks for the reviews, applied to my block branch.

Max