On Mon, Oct 25, 2021 at 1:25 AM Markus Armbruster <armbru@xxxxxxxxxx> wrote:
Add special feature 'unstable' everywhere the name starts with 'x-',
except for InputBarrierProperties member x-origin and
MemoryBackendProperties member x-use-canonical-path-for-ramblock-id,
because these two are actually stable.
Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>
---
qapi/block-core.json | 123 +++++++++++++++++++++++++++++++------------
qapi/migration.json | 35 +++++++++---
qapi/misc.json | 6 ++-
qapi/qom.json | 11 ++--
4 files changed, 130 insertions(+), 45 deletions(-)
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 6d3217abb6..ce2c1352cb 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -1438,6 +1438,9 @@
#
# @x-perf: Performance options. (Since 6.0)
#
+# Features:
+# @unstable: Member @x-perf is experimental.
+#
It'd be a lot cooler if we could annotate the unstable member directly instead of confusing it with the syntax that might describe the entire struct/union/command/etc, but ... eh, it's just a doc field, so I'm not gonna press on this. I don't have the energy to get into a doc formatting standard discussion right now, so: sure, why not?
# Note: @on-source-error and @on-target-error only affect background
# I/O. If an error occurs during a guest write request, the device's
# rerror/werror actions will be used.
@@ -1452,7 +1455,9 @@
'*on-source-error': 'BlockdevOnError',
'*on-target-error': 'BlockdevOnError',
'*auto-finalize': 'bool', '*auto-dismiss': 'bool',
- '*filter-node-name': 'str', '*x-perf': 'BackupPerf' } }
+ '*filter-node-name': 'str',
+ '*x-perf': { 'type': 'BackupPerf',
+ 'features': [ 'unstable' ] } } }
##
# @DriveBackup:
@@ -1916,9 +1921,13 @@
#
# Get the block graph.
#
+# Features:
+# @unstable: This command is meant for debugging.
+#
# Since: 4.0
##
-{ 'command': 'x-debug-query-block-graph', 'returns': 'XDbgBlockGraph' }
+{ 'command': 'x-debug-query-block-graph', 'returns': 'XDbgBlockGraph',
+ 'features': [ 'unstable' ] }
##
# @drive-mirror:
@@ -2257,6 +2266,9 @@
#
# Get bitmap SHA256.
#
+# Features:
+# @unstable: This command is meant for debugging.
+#
# Returns: - BlockDirtyBitmapSha256 on success
# - If @node is not a valid block device, DeviceNotFound
# - If @name is not found or if hashing has failed, GenericError with an
@@ -2265,7 +2277,8 @@
# Since: 2.10
##
{ 'command': 'x-debug-block-dirty-bitmap-sha256',
- 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256' }
+ 'data': 'BlockDirtyBitmap', 'returns': 'BlockDirtyBitmapSha256',
+ 'features': [ 'unstable' ] }
##
# @blockdev-mirror:
@@ -2495,27 +2508,57 @@
#
# Properties for throttle-group objects.
#
-# The options starting with x- are aliases for the same key without x- in
-# the @limits object. As indicated by the x- prefix, this is not a stable
-# interface and may be removed or changed incompatibly in the future. Use
-# @limits for a supported stable interface.
-#
# @limits: limits to apply for this throttle group
#
+# Features:
+# @unstable: All members starting with x- are aliases for the same key
+# without x- in the @limits object. This is not a stable
+# interface and may be removed or changed incompatibly in
+# the future. Use @limits for a supported stable
+# interface.
+#
# Since: 2.11
##
{ 'struct': 'ThrottleGroupProperties',
'data': { '*limits': 'ThrottleLimits',
- '*x-iops-total' : 'int', '*x-iops-total-max' : 'int',
- '*x-iops-total-max-length' : 'int', '*x-iops-read' : 'int',
- '*x-iops-read-max' : 'int', '*x-iops-read-max-length' : 'int',
- '*x-iops-write' : 'int', '*x-iops-write-max' : 'int',
- '*x-iops-write-max-length' : 'int', '*x-bps-total' : 'int',
- '*x-bps-total-max' : 'int', '*x-bps-total-max-length' : 'int',
- '*x-bps-read' : 'int', '*x-bps-read-max' : 'int',
- '*x-bps-read-max-length' : 'int', '*x-bps-write' : 'int',
- '*x-bps-write-max' : 'int', '*x-bps-write-max-length' : 'int',
- '*x-iops-size' : 'int' } }
+ '*x-iops-total': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-total-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-total-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-read': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-read-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-read-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-write': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-write-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-write-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-total': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-total-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-total-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-read': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-read-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-read-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-write': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-write-max': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-bps-write-max-length': { 'type': 'int',
+ 'features': [ 'unstable' ] },
+ '*x-iops-size': { 'type': 'int',
+ 'features': [ 'unstable' ] } } }
##
# @block-stream:
@@ -2916,6 +2959,7 @@
# read-only when the last writer is detached. This
# allows giving QEMU write permissions only on demand
# when an operation actually needs write access.
+# @unstable: Member x-check-cache-dropped is meant for debugging.
#
# Since: 2.9
##
@@ -2926,7 +2970,8 @@
'*aio': 'BlockdevAioOptions',
'*drop-cache': {'type': 'bool',
'if': 'CONFIG_LINUX'},
- '*x-check-cache-dropped': 'bool' },
+ '*x-check-cache-dropped': { 'type': 'bool',
+ 'features': [ 'unstable' ] } },
'features': [ { 'name': 'dynamic-auto-read-only',
'if': 'CONFIG_POSIX' } ] }
@@ -4041,13 +4086,16 @@
# future requests before a successful reconnect will
# immediately fail. Default 0 (Since 4.2)
#
+# Features:
+# @unstable: Member @x-dirty-bitmap is experimental.
+#
# Since: 2.9
##
{ 'struct': 'BlockdevOptionsNbd',
'data': { 'server': 'SocketAddress',
'*export': 'str',
'*tls-creds': 'str',
- '*x-dirty-bitmap': 'str',
+ '*x-dirty-bitmap': { 'type': 'str', 'features': [ 'unstable' ] },
'*reconnect-delay': 'uint32' } }
##
@@ -4865,13 +4913,17 @@
# and replacement of an active keyslot
# (possible loss of data if IO error happens)
#
+# Features:
+# @unstable: This command is experimental.
+#
# Since: 5.1
##
{ 'command': 'x-blockdev-amend',
'data': { 'job-id': 'str',
'node-name': 'str',
'options': 'BlockdevAmendOptions',
- '*force': 'bool' } }
+ '*force': 'bool' },
+ 'features': [ 'unstable' ] }
##
# @BlockErrorAction:
@@ -5242,16 +5294,18 @@
#
# @node: the name of the node that will be added.
#
-# Note: this command is experimental, and its API is not stable. It
-# does not support all kinds of operations, all kinds of children, nor
-# all block drivers.
+# Features:
+# @unstable: This command is experimental, and its API is not stable. It
+# does not support all kinds of operations, all kinds of
+# children, nor all block drivers.
#
-# FIXME Removing children from a quorum node means introducing gaps in the
-# child indices. This cannot be represented in the 'children' list of
-# BlockdevOptionsQuorum, as returned by .bdrv_refresh_filename().
+# FIXME Removing children from a quorum node means introducing
+# gaps in the child indices. This cannot be represented in the
+# 'children' list of BlockdevOptionsQuorum, as returned by
+# .bdrv_refresh_filename().
#
-# Warning: The data in a new quorum child MUST be consistent with that of
-# the rest of the array.
+# Warning: The data in a new quorum child MUST be consistent
+# with that of the rest of the array.
#
# Since: 2.7
#
@@ -5280,7 +5334,8 @@
{ 'command': 'x-blockdev-change',
'data' : { 'parent': 'str',
'*child': 'str',
- '*node': 'str' } }
+ '*node': 'str' },
+ 'features': [ 'unstable' ] }
##
# @x-blockdev-set-iothread:
@@ -5297,8 +5352,9 @@
# @force: true if the node and its children should be moved when a BlockBackend
# is already attached
#
-# Note: this command is experimental and intended for test cases that need
-# control over IOThreads only.
+# Features:
+# @unstable: This command is experimental and intended for test cases that
+# need control over IOThreads only.
#
# Since: 2.12
#
@@ -5320,7 +5376,8 @@
{ 'command': 'x-blockdev-set-iothread',
'data' : { 'node-name': 'str',
'iothread': 'StrOrNull',
- '*force': 'bool' } }
+ '*force': 'bool' },
+ 'features': [ 'unstable' ] }
##
# @QuorumOpType:
diff --git a/qapi/migration.json b/qapi/migration.json
index 88f07baedd..9aa8bc5759 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -452,14 +452,20 @@
# procedure starts. The VM RAM is saved with running VM.
# (since 6.0)
#
+# Features:
+# @unstable: Members @x-colo and @x-ignore-shared are experimental.
+#
# Since: 1.2
##
{ 'enum': 'MigrationCapability',
'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
- 'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',
+ 'compress', 'events', 'postcopy-ram',
+ { 'name': 'x-colo', 'features': [ 'unstable' ] },
+ 'release-ram',
'block', 'return-path', 'pause-before-switchover', 'multifd',
'dirty-bitmaps', 'postcopy-blocktime', 'late-block-activate',
- 'x-ignore-shared', 'validate-uuid', 'background-snapshot'] }
+ { 'name': 'x-ignore-shared', 'features': [ 'unstable' ] },
+ 'validate-uuid', 'background-snapshot'] }
##
# @MigrationCapabilityStatus:
@@ -743,6 +749,9 @@
# block device name if there is one, and to their node name
# otherwise. (Since 5.2)
#
+# Features:
+# @unstable: Member @x-checkpoint-delay is experimental.
+#
# Since: 2.4
##
{ 'enum': 'MigrationParameter',
@@ -753,7 +762,9 @@
'cpu-throttle-initial', 'cpu-throttle-increment',
'cpu-throttle-tailslow',
'tls-creds', 'tls-hostname', 'tls-authz', 'max-bandwidth',
- 'downtime-limit', 'x-checkpoint-delay', 'block-incremental',
+ 'downtime-limit',
+ { 'name': 'x-checkpoint-delay', 'features': [ 'unstable' ] },
+ 'block-incremental',
'multifd-channels',
'xbzrle-cache-size', 'max-postcopy-bandwidth',
'max-cpu-throttle', 'multifd-compression',
@@ -903,6 +914,9 @@
# block device name if there is one, and to their node name
# otherwise. (Since 5.2)
#
+# Features:
+# @unstable: Member @x-checkpoint-delay is experimental.
+#
# Since: 2.4
##
# TODO either fuse back into MigrationParameters, or make
@@ -925,7 +939,8 @@
'*tls-authz': 'StrOrNull',
'*max-bandwidth': 'size',
'*downtime-limit': 'uint64',
- '*x-checkpoint-delay': 'uint32',
+ '*x-checkpoint-delay': { 'type': 'uint32',
+ 'features': [ 'unstable' ] },
'*block-incremental': 'bool',
'*multifd-channels': 'uint8',
'*xbzrle-cache-size': 'size',
@@ -1099,6 +1114,9 @@
# block device name if there is one, and to their node name
# otherwise. (Since 5.2)
#
+# Features:
+# @unstable: Member @x-checkpoint-delay is experimental.
+#
# Since: 2.4
##
{ 'struct': 'MigrationParameters',
@@ -1119,7 +1137,8 @@
'*tls-authz': 'str',
'*max-bandwidth': 'size',
'*downtime-limit': 'uint64',
- '*x-checkpoint-delay': 'uint32',
+ '*x-checkpoint-delay': { 'type': 'uint32',
+ 'features': [ 'unstable' ] },
'*block-incremental': 'bool',
'*multifd-channels': 'uint8',
'*xbzrle-cache-size': 'size',
@@ -1351,6 +1370,9 @@
# If sent to the Secondary, the Secondary side will run failover work,
# then takes over server operation to become the service VM.
#
+# Features:
+# @unstable: This command is experimental.
+#
# Since: 2.8
#
# Example:
@@ -1359,7 +1381,8 @@
# <- { "return": {} }
#
##
-{ 'command': 'x-colo-lost-heartbeat' }
+{ 'command': 'x-colo-lost-heartbeat',
+ 'features': [ 'unstable' ] }
##
# @migrate_cancel:
diff --git a/qapi/misc.json b/qapi/misc.json
index 5c2ca3b556..358548abe1 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -185,6 +185,9 @@
# available during the preconfig state (i.e. when the --preconfig command
# line option was in use).
#
+# Features:
+# @unstable: This command is experimental.
+#
# Since 3.0
#
# Returns: nothing
@@ -195,7 +198,8 @@
# <- { "return": {} }
#
##
-{ 'command': 'x-exit-preconfig', 'allow-preconfig': true }
+{ 'command': 'x-exit-preconfig', 'allow-preconfig': true,
+ 'features': [ 'unstable' ] }
##
# @human-monitor-command:
diff --git a/qapi/qom.json b/qapi/qom.json
index 7231ac3f34..ccd1167808 100644
--- a/qapi/qom.json
+++ b/qapi/qom.json
@@ -559,10 +559,8 @@
# for ramblock-id. Disable this for 4.0
# machine types or older to allow
# migration with newer QEMU versions.
-# This option is considered stable
-# despite the x- prefix. (default:
-# false generally, but true for machine
-# types <= 4.0)
+# (default: false generally,
+# but true for machine types <= 4.0)
#
# Note: prealloc=true and reserve=false cannot be set at the same time. With
# reserve=true, the behavior depends on the operating system: for example,
@@ -785,6 +783,9 @@
##
# @ObjectType:
#
+# Features:
+# @unstable: Member @x-remote-object is experimental.
+#
# Since: 6.0
##
{ 'enum': 'ObjectType',
@@ -836,7 +837,7 @@
'tls-creds-psk',
'tls-creds-x509',
'tls-cipher-suites',
- 'x-remote-object'
+ { 'name': 'x-remote-object', 'features': [ 'unstable' ] }
] }
##
--
2.31.1
Seems OK, but I didn't audit for false positives/negatives. Trusting your judgment here. (It looks like Phil started to audit this in his reply to your previous commit, so I'll trust that.)
Acked-by: John Snow <jsnow@xxxxxxxxxx>
