diff options
| author | John Snow <jsnow@redhat.com> | 2015-05-12 15:53:01 -0400 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-05-29 12:53:12 +0200 |
| commit | 9abe3bdc45ced367fe034c0fdd7c686212389767 (patch) | |
| tree | 61510db30667eb384a720e9020d7a01c1d637182 /qapi | |
| parent | ba7c388963e099c0d2cedb7f048e30747ffff25d (diff) | |
| download | qemu-9abe3bdc45ced367fe034c0fdd7c686212389767.zip | |
qapi: add dirty bitmap status
Bitmaps can be in a handful of different states with potentially
more to come as we tool around with migration and persistence patches.
Management applications may need to know why certain bitmaps are
unavailable for various commands, e.g. busy in another operation,
busy being migrated, etc.
Right now, all we offer is BlockDirtyInfo's boolean member 'frozen'.
Instead of adding more booleans, replace it by an enumeration member
'status' with values 'active' and 'frozen'. Then add new value
'disabled'.
Incompatible change. Fine because the changed part hasn't been
released so far.
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 863ffea0c7..8411d4f83a 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -326,6 +326,25 @@ 'data': 'bool', '*offset': 'int' } } ## +# @DirtyBitmapStatus: +# +# An enumeration of possible states that a dirty bitmap can report to the user. +# +# @frozen: The bitmap is currently in-use by a backup operation or block job, +# and is immutable. +# +# @disabled: The bitmap is currently in-use by an internal operation and is +# read-only. It can still be deleted. +# +# @active: The bitmap is actively monitoring for new writes, and can be cleared, +# deleted, or used for backup operations. +# +# Since: 2.4 +## +{ 'enum': 'DirtyBitmapStatus', + 'data': ['active', 'disabled', 'frozen'] } + +## # @BlockDirtyInfo: # # Block dirty bitmap information. @@ -336,13 +355,13 @@ # # @granularity: granularity of the dirty bitmap in bytes (since 1.4) # -# @frozen: whether the dirty bitmap is frozen (Since 2.4) +# @status: current status of the dirty bitmap (since 2.4) # # Since: 1.3 ## { 'struct': 'BlockDirtyInfo', 'data': {'*name': 'str', 'count': 'int', 'granularity': 'uint32', - 'frozen': 'bool'} } + 'status': 'DirtyBitmapStatus'} } ## # @BlockInfo: |