This patch series add a new extension - zoned format - to the
qcow2 driver thereby allowing full zoned storage emulation on
the qcow2 img file. Users can attach such a qcow2 file to the
guest as a zoned device.
To create a qcow2 file with zoned format, use command like this:
$ qemu-img create -f qcow2 test.qcow2 -o size=768M -o
zone_size=64M -o zone_capacity=64M -o zone_nr_conv=0 -o
max_append_sectors=512 -o max_open_zones=0 -o max_active_zones=0
-o zoned_profile=zbc
Then add it to the QEMU command line:
-blockdev
node-name=drive1,driver=qcow2,file.driver=file,file.filename=../qemu/test.qcow2
\
-device virtio-blk-pci,drive=drive1 \
v1->v2:
- add more tests to qemu-io zoned commands
- make zone append change state to full when wp reaches end
- add documentation to qcow2 zoned extension header
- address review comments (Stefan):
* fix zoned_mata allocation size
* use bitwise or than addition
* fix wp index overflow and locking
* cleanups: comments, naming
Sam Li (4):
docs/qcow2: add the zoned format feature
qcow2: add configurations for zoned format extension
qcow2: add zoned emulation capability
iotests: test the zoned format feature for qcow2 file
block/qcow2.c | 799 ++++++++++++++++++++++-
block/qcow2.h | 23 +
docs/interop/qcow2.txt | 26 +
docs/system/qemu-block-drivers.rst.inc | 39 ++
include/block/block-common.h | 5 +
include/block/block_int-common.h | 16 +
qapi/block-core.json | 46 +-
tests/qemu-iotests/tests/zoned-qcow2 | 135 ++++
tests/qemu-iotests/tests/zoned-qcow2.out | 140 ++++
9 files changed, 1214 insertions(+), 15 deletions(-)
create mode 100755 tests/qemu-iotests/tests/zoned-qcow2
create mode 100644 tests/qemu-iotests/tests/zoned-qcow2.out
--
2.40.1
