qemu/qapi
Manos Pitsidianakis 432d889e55 block: convert ThrottleGroup to object with QOM
ThrottleGroup is converted to an object. This will allow the future
throttle block filter drive easy creation and configuration of throttle
groups in QMP and cli.

A new QAPI struct, ThrottleLimits, is introduced to provide a shared
struct for all throttle configuration needs in QMP.

ThrottleGroups can be created via CLI as
    -object throttle-group,id=foo,x-iops-total=100,x-..
where x-* are individual limit properties. Since we can't add non-scalar
properties in -object this interface must be used instead. However,
setting these properties must be disabled after initialization because
certain combinations of limits are forbidden and thus configuration
changes should be done in one transaction. The individual properties
will go away when support for non-scalar values in CLI is implemented
and thus are marked as experimental.

ThrottleGroup also has a `limits` property that uses the ThrottleLimits
struct.  It can be used to create ThrottleGroups or set the
configuration in existing groups as follows:

{ "execute": "object-add",
  "arguments": {
    "qom-type": "throttle-group",
    "id": "foo",
    "props" : {
      "limits": {
          "iops-total": 100
      }
    }
  }
}
{ "execute" : "qom-set",
    "arguments" : {
        "path" : "foo",
        "property" : "limits",
        "value" : {
            "iops-total" : 99
        }
    }
}

This also means a group's configuration can be fetched with qom-get.

Signed-off-by: Manos Pitsidianakis <el13635@mail.ntua.gr>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-09-05 18:12:21 +02:00
..
block-core.json block: convert ThrottleGroup to object with QOM 2017-09-05 18:12:21 +02:00
block.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
char.json qapi-schema: Collect char device stuff in qapi/char.json 2017-09-04 13:09:12 +02:00
common.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
crypto.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
introspect.json qapi-schema: Introspection doc is in the wrong section, fix 2017-09-04 13:09:12 +02:00
Makefile.objs qapi: rename *qmp-*-visitor* to *qobject-*-visitor* 2016-10-25 16:25:48 +02:00
migration.json qapi-schema: Collect migration stuff in qapi/migration.json 2017-09-04 13:09:12 +02:00
net.json qapi-schema: Collect net device stuff in qapi/net.json 2017-09-04 13:09:12 +02:00
opts-visitor.c qapi: Fix QemuOpts visitor regression on unvisited input 2017-03-22 19:24:34 +01:00
qapi-clone-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
qapi-dealloc-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
qapi-util.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
qapi-visit-core.c qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
qmp-dispatch.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
qmp-event.c qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
qmp-registry.c qapi: Support multiple command registries per program 2017-03-05 09:12:25 +01:00
qobject-input-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
qobject-output-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
rocker.json qapi: The #optional tag is redundant, drop 2017-03-16 07:13:02 +01:00
run-state.json qapi-schema: Collect run state stuff in qapi/run-state.json 2017-09-04 13:09:12 +02:00
sockets.json qapi-schema: Collect sockets stuff in qapi/sockets.json 2017-09-04 13:09:12 +02:00
string-input-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
string-output-visitor.c qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
tpm.json qapi-schema: Collect TPM stuff in qapi/tpm.json 2017-09-04 13:09:12 +02:00
trace-events qapi: Use QNull for a more regular visit_type_null() 2017-07-24 13:35:11 +02:00
trace.json qapi-schema: Improve section headings 2017-09-04 13:09:12 +02:00
transaction.json qapi-schema: Collect transaction stuff in qapi/transaction.json 2017-09-04 13:09:12 +02:00
ui.json qapi-schema: Collect UI stuff in qapi/ui.json 2017-09-04 13:09:12 +02:00