Series 2-4 of my byte-based conversion missed soft freeze, so they are now 2.11 material. However, there are some bug fixes in those series that we should fix now in 2.10 (patch 1 from series two on dirty bitmaps, patch 2 extracted from "qcow2: Switch qcow2_measure() to byte-based iteration" from series three on block status).
I don't know if it is worth enhancing iotest 178 to probe the size of a 2T image. The test is simple, and fast when patched: $ qemu-img create -f qcow2 -o cluster_size=2M huge 2T $ time ./qemu-img measure -O qcow2 -f qcow2 huge required size: 335806464 fully allocated size: 2199359062016 real 0m0.021s user 0m0.017s sys 0m0.004s but the inf-loop when unpatched is annoying; meanwhile, 'huge' only occupies 6 megabytes on disk, so it's not that invasive. Eric Blake (2): dirty-bitmap: Report BlockDirtyInfo.count in bytes, as documented qcow2: Fix sector calculation in qcow2_measure() block/dirty-bitmap.c | 2 +- block/qcow2.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) -- 2.13.3
