On 16.02.22 20:46, Vladimir Sementsov-Ogievskiy wrote:
Add new block driver handlers and corresponding generic wrappers.
It will be used to allow copy-before-write filter to provide
reach fleecing interface in further commit.
In future this approach may be used to allow reading qcow2 interanal
(s/interanal/internal/)
snaphots, for example to export them through NBD.
Ooh, that’s indeed quite nice.
Raises the question of how users are to select a specific snapshot in
qcow2 file, but your next patch answers that question: The snapshot
access driver is to receive a runtime option for this, and the API is to
be extended to allow for selecting a specific snapshot. Sounds good!
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
include/block/block_int.h | 27 +++++++++++++++
block/io.c | 69 +++++++++++++++++++++++++++++++++++++++
2 files changed, 96 insertions(+)
Yes, really nice. Thanks.
Reviewed-by: Hanna Reitz <hre...@redhat.com>
