[PATCH v3 0/6] Allow changing bs->file on reopen

[Alberto Garcia <berto@igalia.com>]

Based-on: <20201127144522.29991-1-vsementsov@virtuozzo.com>

Hello,

here's the third version of the patches that allow replacing bs->file
using (x-)blockdev-reopen. You can read more details here:

https://lists.gnu.org/archive/html/qemu-block/2021-01/msg00437.html

In summary, the series does three things:

   - Allows replacing bs->file
   - Allows reopening multiple block devices with one single command.
   - Drops the x- prefix from the command name.

This is still depending on Vladimir's "update graph permissions
update" branch.

Regards,

Berto

v3:
- Patch 1: Move bdrv_reopen_queue_free() to a new patch
- Patch 2: Merge bdrv_reopen_parse_backing() and bdrv_reopen_parse_file()
- Patch 3: Add more tests
- Patch 4: Update documentation and fix iotest 296
- Patch 5: Minor updates to iotest 245
- Patch 6: New patch, drop the 'x-' prefix from x-blockdev-reopen

v2: https://lists.gnu.org/archive/html/qemu-block/2021-02/msg00623.html
v1: https://lists.gnu.org/archive/html/qemu-block/2021-01/msg00437.html

Output of git backport-diff against v2:

Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/6:[down] 'block: Add bdrv_reopen_queue_free()'
002/6:[0160] [FC] 'block: Allow changing bs->file on reopen'
003/6:[down] 'iotests: Test replacing files with x-blockdev-reopen'
004/6:[0042] [FC] 'block: Support multiple reopening with x-blockdev-reopen'
005/6:[0015] [FC] 'iotests: Test reopening multiple devices at the same time'
006/6:[down] 'block: Make blockdev-reopen stable API'

Alberto Garcia (6):
  block: Add bdrv_reopen_queue_free()
  block: Allow changing bs->file on reopen
  iotests: Test replacing files with x-blockdev-reopen
  block: Support multiple reopening with x-blockdev-reopen
  iotests: Test reopening multiple devices at the same time
  block: Make blockdev-reopen stable API

 qapi/block-core.json       |  24 ++---
 include/block/block.h      |   2 +
 block.c                    | 137 ++++++++++++++++----------
 blockdev.c                 |  85 +++++++++--------
 tests/qemu-iotests/155     |   9 +-
 tests/qemu-iotests/165     |   4 +-
 tests/qemu-iotests/245     | 190 +++++++++++++++++++++++++++++++++----
 tests/qemu-iotests/245.out |  11 ++-
 tests/qemu-iotests/248     |   4 +-
 tests/qemu-iotests/248.out |   2 +-
 tests/qemu-iotests/296     |  11 ++-
 tests/qemu-iotests/298     |   4 +-
 12 files changed, 351 insertions(+), 132 deletions(-)

-- 
2.20.1