Merge remote-tracking branch 'remotes/hreitz-gitlab/tags/pull-block-2022-03-07' into...

Merge remote-tracking branch 'remotes/hreitz-gitlab/tags/pull-block-2022-03-07' into staging

Block patches for 7.0-rc0:
- New fleecing backup scheme
- iotest fixes
- Fixes for the curl block driver
- Fix for the preallocate block driver
- IDE fix for zero-length TRIM requests

# gpg: Signature made Mon 07 Mar 2022 10:33:31 GMT
# gpg:                using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg:                issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: CB62 D7A0 EE38 29E4 5F00  4D34 A1FA 40D0 9801 9CDF

* remotes/hreitz-gitlab/tags/pull-block-2022-03-07: (23 commits)
  iotests/image-fleecing: test push backup with fleecing
  iotests/image-fleecing: add test case with bitmap
  iotests.py: add qemu_io_pipe_and_status()
  iotests/image-fleecing: add test-case for fleecing format node
  block: copy-before-write: realize snapshot-access API
  block: introduce snapshot-access block driver
  block/io: introduce block driver snapshot-access API
  block/reqlist: add reqlist_wait_all()
  block/dirty-bitmap: introduce bdrv_dirty_bitmap_status()
  block/reqlist: reqlist_find_conflict(): use ranges_overlap()
  block: intoduce reqlist
  block/block-copy: add block_copy_reset()
  block/copy-before-write: add bitmap open parameter
  block/block-copy: block_copy_state_new(): add bitmap parameter
  block/dirty-bitmap: bdrv_merge_dirty_bitmap(): add return value
  block/block-copy: move copy_bitmap initialization to block_copy_state_new()
  iotests: Write test output to TEST_DIR
  tests/qemu-iotests/testrunner: Quote "case not run" lines in TAP mode
  tests/qemu-iotests/040: Skip TestCommitWithFilters without 'throttle'
  block: fix preallocate filter: don't do unaligned preallocate requests
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>