The caches are now recalculated upon image resizing. This is done because the new default behavior of assigning a sufficient L2 cache to cover the entire image implies that the cache will still be sufficient after image resizing. To put a limit on the cache, the options cache-size and l2-cache-size can be used.
Signed-off-by: Leonid Bloch <lbl...@janustech.com> --- block/qcow2.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/block/qcow2.c b/block/qcow2.c index 74f2cb10a4..06fac1bb8c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -3656,6 +3656,12 @@ static int coroutine_fn qcow2_co_truncate(BlockDriverState *bs, int64_t offset, } s->l1_vm_state_index = new_l1_size; + /* Update cache sizes */ + QDict *options = qdict_clone_shallow(bs->options); + ret = qcow2_update_options(bs, options, s->flags, errp); + if (ret < 0) { + goto fail; + } ret = 0; fail: qemu_co_mutex_unlock(&s->lock); -- 2.17.1