Am 18.06.2013 um 05:03 hat Wenchao Xia geschrieben:
> Hi, Kevin
> In normal case, qcow2 is based on raw-posix file which don't support
> discard operation
It does, see raw_aio_discard().
> , so this serial doesn't change much in this case,
> still real space is not freed in snapshot delete, and
Hi, Kevin
In normal case, qcow2 is based on raw-posix file which don't support
discard operation, so this serial doesn't change much in this case,
still real space is not freed in snapshot delete, and it completes
fast. Instead, tt affects the case that some protocol below support
discard, so del
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
