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Merge remote-tracking branch 'remotes/jnsnow/tags/bitmaps-pull-request' into staging

Pull request

# gpg: Signature made Tue 12 Mar 2019 20:23:08 GMT
# gpg:                using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full]
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jnsnow/tags/bitmaps-pull-request: (22 commits)
  tests/qemu-iotests: add bitmap resize test 246
  block/qcow2-bitmap: Allow resizes with persistent bitmaps
  block/qcow2-bitmap: Don't check size for IN_USE bitmap
  docs/interop/qcow2: Improve bitmap flag in_use specification
  bitmaps: Fix typo in function name
  block/dirty-bitmaps: implement inconsistent bit
  block/dirty-bitmaps: disallow busy bitmaps as merge source
  block/dirty-bitmaps: prohibit removing readonly bitmaps
  block/dirty-bitmaps: prohibit readonly bitmaps for backups
  block/dirty-bitmaps: add block_dirty_bitmap_check function
  block/dirty-bitmap: add inconsistent status
  block/dirty-bitmaps: add inconsistent bit
  iotests: add busy/recording bit test to 124
  blockdev: remove unused paio parameter documentation
  block/dirty-bitmaps: move comment block
  block/dirty-bitmaps: unify qmp_locked and user_locked calls
  block/dirty-bitmap: explicitly lock bitmaps with successors
  nbd: change error checking order for bitmaps
  block/dirty-bitmap: change semantics of enabled predicate
  block/dirty-bitmap: remove set/reset assertions against enabled bit
  ...

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

# Conflicts:
#	tests/qemu-iotests/group
This commit is contained in:
Peter Maydell 2019-03-13 17:30:34 +00:00
commit 523a2a42c3
17 changed files with 872 additions and 196 deletions
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9
docs/interop/qcow2.txt
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@ -633,7 +633,10 @@ Structure of a bitmap directory entry:
Bit
0: in_use
The bitmap was not saved correctly and may be
inconsistent.
inconsistent. Although the bitmap metadata is still
well-formed from a qcow2 perspective, the metadata
(such as the auto flag or bitmap size) or data
contents may be outdated.
1: auto
The bitmap must reflect all changes of the virtual
@ -761,8 +764,8 @@ corresponding range of the virtual disk (see above) was written to while the
bitmap was 'enabled'. An unset bit means that this range was not written to.
The software doesn't have to sync the bitmap in the image file with its
representation in RAM after each write. Flag 'in_use' should be set while the
bitmap is not synced.
representation in RAM after each write or metadata change. Flag 'in_use'
should be set while the bitmap is not synced.
In the image file the 'enabled' state is reflected by the 'auto' flag. If this
flag is set, the software must consider the bitmap as 'enabled' and start