[v3,0/2] Consider discard option when writing zeros

Message

Nir Soffer June 28, 2024, 8:20 p.m. UTC

Punch holes only when the image is opened with discard=on or discard=unmap.

Tested by:
- new write-zeroes-unmap iotest on xfs, ext4, and tmpfs
- tests/qemu-iotests/check -raw
- tests/qemu-iotests/check -qcow2

Changes since v2
- Add write-zeroes-unmap iotest
- Fix iotest missing discard=unmap

v2 was here:
https://lists.nongnu.org/archive/html/qemu-block/2024-06/msg00231.html

Nir Soffer (2):
  qemu-iotest/245: Add missing discard=unmap
  Consider discard option when writing zeros

 block/io.c                                    |   9 +-
 tests/qemu-iotests/245                        |   2 +-
 tests/qemu-iotests/tests/write-zeroes-unmap   | 127 ++++++++++++++++++
 .../qemu-iotests/tests/write-zeroes-unmap.out |  81 +++++++++++
 4 files changed, 214 insertions(+), 5 deletions(-)
 create mode 100755 tests/qemu-iotests/tests/write-zeroes-unmap
 create mode 100644 tests/qemu-iotests/tests/write-zeroes-unmap.out