[Qemu-block] [PATCH v4 00/27] block: Lock images when opening

[Fam Zheng]

v4: Don't lock RO image. [Rich]

v3: Highlight is handling of image locks during close(3) and bdrv_reopen(). A
    number of new patches are added consequently.



Fam Zheng (27):
  block: Add BDRV_O_NO_LOCK
  qapi: Add lock-image in blockdev-add options
  blockdev: Add and parse "lock-image" option for block devices
  block: Introduce image file locking
  block: Add bdrv_image_locked
  block: Make bdrv_reopen_{commit, abort} private functions
  block: Handle image locking during reopen
  osdep: Add qemu_lock_fd and qemu_unlock_fd
  osdep: Introduce qemu_dup
  raw-posix: Use qemu_dup
  raw-posix: Implement .bdrv_lockf
  gluster: Implement .bdrv_lockf
  qemu-io: Add "-L" option for BDRV_O_NO_LOCK
  qemu-img: Add "-L" option to sub commands
  qemu-img: Update documentation of "-L" option
  qemu-nbd: Add "--no-lock/-L" option
  block: Don't lock drive-backup target image in none mode
  mirror: Disable image locking on target backing chain
  qemu-iotests: 140: Disable image lock for qemu-io access
  qemu-iotests: 046: Move version detection out from verify_io
  qemu-iotests: Wait for QEMU processes before checking image in 091
  qemu-iotests: 030: Disable image lock when checking test image
  iotests: 087: Disable image lock in cases where file is shared
  iotests: Disable image locking in 085
  tests: Use null-co:// instead of /dev/null
  block: Turn on image locking by default
  qemu-iotests: Add test case 153 for image locking

 block.c                    |  76 +++++++++++++-
 block/gluster.c            |  31 ++++++
 block/raw-posix.c          |  32 ++++--
 blockdev.c                 |  23 +++++
 include/block/block.h      |   6 +-
 include/block/block_int.h  |  12 +++
 include/qemu/osdep.h       |   3 +
 qapi/block-core.json       |   6 +-
 qemu-img-cmds.hx           |  44 ++++-----
 qemu-img.c                 |  90 +++++++++++++----
 qemu-img.texi              |   3 +
 qemu-io.c                  |  24 ++++-
 qemu-nbd.c                 |   7 +-
 qemu-nbd.texi              |   2 +
 tests/drive_del-test.c     |   2 +-
 tests/nvme-test.c          |   2 +-
 tests/qemu-iotests/030     |   2 +-
 tests/qemu-iotests/046     |  22 +++--
 tests/qemu-iotests/085     |   3 +-
 tests/qemu-iotests/087     |   6 ++
 tests/qemu-iotests/091     |   3 +
 tests/qemu-iotests/091.out |   1 +
 tests/qemu-iotests/140     |   2 +-
 tests/qemu-iotests/153     | 191 +++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/153.out | 241 +++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/group   |   1 +
 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   |   4 +-
 util/osdep.c               | 215 +++++++++++++++++++++++++++++++++++++---
 31 files changed, 968 insertions(+), 92 deletions(-)
 create mode 100755 tests/qemu-iotests/153
 create mode 100644 tests/qemu-iotests/153.out

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2.8.2