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| author | Peter Maydell <peter.maydell@linaro.org> | 2019-03-13 17:30:34 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-03-13 17:30:34 +0000 |
| commit | 523a2a42c3abd65b503610b2a18cd7fc74c6c61e (patch) | |
| tree | c342640cd6bdfa783df6f6435021422c2d099551 /docs | |
| parent | 36fe7709664579c934f014f21e5610d69e5b298f (diff) | |
| parent | e2ec4119dc57e9d65e419b2e9071d35300aa1d92 (diff) | |
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
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/interop/qcow2.txt | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index 8c3098d8d9..af5711e533 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -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 |