This series adds options to make qcow2 discard freed clusters, in several categories. By default, only freed clusters related to snapshots (i.e. mainly snapshot deletion) are discarded.
Kevin Wolf (5): Revert "block: Disable driver-specific options for 1.5" qcow2: Add refcount update reason to all callers qcow2: Options to enable discard for freed clusters qcow2: Batch discards block: Always enable discard on the protocol level block.c | 2 +- block/qcow2-cluster.c | 38 +++++++++---- block/qcow2-refcount.c | 139 ++++++++++++++++++++++++++++++++++++++++------- block/qcow2-snapshot.c | 6 +- block/qcow2.c | 30 +++++++++- block/qcow2.h | 32 ++++++++++- blockdev.c | 118 ++-------------------------------------- tests/qemu-iotests/group | 2 +- 8 files changed, 214 insertions(+), 153 deletions(-) -- 1.8.1.4
