[Qemu-devel] [PATCH v15 00/21] block: Image locking series

[Fam Zheng <famz@redhat.com>]

v15: Rework a number of things, especially around what and how lockings are
     done.  [Kevin]
     - Map each permission to a locked byte.
     - Make the new option --force-share-perms, and require read-only=on.
     - Update test case 153 accordingly.
     - Only add -U where necessary in iotest 030.
     - Reject -U if conflicting with image opts in qemu-img/qemu-io.

v14: Replace BDRV_ flag with the "force-shared-write" block option. [Kevin]
     Add bs->force_shared_write.
     Update test case accordingly.
     A few fixes in the locking code spotted by patchew and the new test,
     though the long line error is still there for readability.
     Replace the workaround to drive-backup with a real fix in patch 17.

v13: - Address Max's comments.
     - Add reviewed-by from Max and Eric.
     - Rebase for 2.10:
       * Use op blocker API
       * Add --unsafe-read for qemu-img and qemu-io

Fam Zheng (21):
  block: Make bdrv_perm_names public
  block: Define BLK_PERM_MAX
  block: Add, parse and store "force-share" option
  block: Respect "force-share" in perm propagating
  qemu-img: Add --force-share option to subcommands
  qemu-img: Update documentation for -U
  qemu-io: Add --force-share option
  iotests: 030: Prepare for image locking
  iotests: 046: Prepare for image locking
  iotests: 055: Don't attach the target image already for drive-backup
  iotests: 085: Avoid image locking conflict
  iotests: 087: Don't attach test image twice
  iotests: 091: Quit QEMU before checking image
  iotests: 172: Use separate images for multiple devices
  tests: Use null-co:// instead of /dev/null as the dummy image
  file-posix: Add 'locking' option
  tests: Disable image lock in test-replication
  block: Reuse bs as backing hd for drive-backup sync=none
  osdep: Add qemu_lock_fd and qemu_unlock_fd
  file-posix: Add image locking to perm operations
  qemu-iotests: Add test case 153 for image locking

 block.c                    |  51 ++++--
 block/file-posix.c         | 272 ++++++++++++++++++++++++++++++-
 blockdev.c                 |  15 +-
 include/block/block.h      |   5 +
 include/block/block_int.h  |   1 +
 include/qemu/osdep.h       |   3 +
 qapi/block-core.json       |   3 +
 qemu-img-cmds.hx           |  36 ++---
 qemu-img.c                 | 154 +++++++++++++-----
 qemu-io.c                  |  42 ++++-
 tests/drive_del-test.c     |   2 +-
 tests/nvme-test.c          |   2 +-
 tests/qemu-iotests/030     |  18 +--
 tests/qemu-iotests/046     |   2 +-
 tests/qemu-iotests/055     |  32 ++--
 tests/qemu-iotests/085     |  34 ++--
 tests/qemu-iotests/085.out |   3 +-
 tests/qemu-iotests/087     |   6 +-
 tests/qemu-iotests/091     |   2 +
 tests/qemu-iotests/153     | 220 +++++++++++++++++++++++++
 tests/qemu-iotests/153.out | 390 +++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/172     |  55 ++++---
 tests/qemu-iotests/172.out |  50 +++---
 tests/qemu-iotests/group   |   1 +
 tests/test-replication.c   |   9 +-
 tests/usb-hcd-uhci-test.c  |   2 +-
 tests/usb-hcd-xhci-test.c  |   2 +-
 tests/virtio-blk-test.c    |   2 +-
 tests/virtio-scsi-test.c   |   5 +-
 util/osdep.c               |  48 ++++++
 30 files changed, 1291 insertions(+), 176 deletions(-)
 create mode 100755 tests/qemu-iotests/153
 create mode 100644 tests/qemu-iotests/153.out

-- 
2.9.3