This series adds fragmentation info support to qcow2 and then adds compression info. Previously only QED supported fragmentation info. Note that fragmentation info only covers the current image, internal snapshots are not included.
The new BlockFragInfo.compressed field contains the number of compressed clusters. qemu-img check now reports the percentage of compressed clusters out of all allocated clusters. This can be used to decide when to recompress an image or to double-check that an image is indeed compressed. qemu-iotests was to handle the new qemu-img check output. I have tested qcow2 images both compressed and uncompressed. v2: * Fix indentation on modified block/qcow2-refcount.c lines [eblake] * Change qemu-img check output from just "compressed" to "compressed clusters" [eblake] * Improve grep and sed usage in common.rc [eblake] * Introduce sector_offset local variable for & ~511 [eblake] * Improve nb_csectors rounding down explanation in comment [eblake] Stefan Hajnoczi (5): qcow2: introduce check_refcounts_l1/l2() flags qcow2: record fragmentation statistics during check qemu-img: avoid excessive BlockFragInfo line length qemu-img: add compressed clusters to BlockFragInfo qcow2: support compressed clusters in BlockFragInfo block/qcow2-refcount.c | 51 ++++++++++++++++++++++++++++++++++++-------- include/block/block.h | 1 + qemu-img.c | 13 ++++++----- tests/qemu-iotests/026 | 6 +++--- tests/qemu-iotests/036 | 2 +- tests/qemu-iotests/039 | 2 +- tests/qemu-iotests/044.out | 1 + tests/qemu-iotests/common.rc | 6 +++--- 8 files changed, 60 insertions(+), 22 deletions(-) -- 1.8.1
