diff mbox series

[PULL,32/32] qapi: add conditions to REPLICATION type/commands on the schema

Message ID 20181213184340.24037-33-armbru@redhat.com
State New
Headers show
Series [PULL,01/32] cutils: Add qemu_strtod() and qemu_strtod_finite() | expand

Commit Message

Markus Armbruster Dec. 13, 2018, 6:43 p.m. UTC
From: Marc-André Lureau <marcandre.lureau@redhat.com>

Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
code accordingly.

Made conditional:

* xen-set-replication, query-xen-replication-status,
  xen-colo-do-checkpoint

  Before the patch, we first register the commands unconditionally in
  generated code (requires a stub), then conditionally unregister in
  qmp_unregister_commands_hack().

  Afterwards, we register only when CONFIG_REPLICATION.  The command
  fails exactly the same, with CommandNotFound.

  Improvement, because now query-qmp-schema is accurate, and we're one
  step closer to killing qmp_unregister_commands_hack().

* enum BlockdevDriver value "replication" in command blockdev-add

* BlockdevOptions variant @replication

and related structures.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 migration/colo.c     | 16 ++++------------
 monitor.c            |  5 -----
 qapi/block-core.json | 13 +++++++++----
 qapi/migration.json  | 12 ++++++++----
 4 files changed, 21 insertions(+), 25 deletions(-)

Comments

Thomas Huth Dec. 17, 2018, 4 p.m. UTC | #1
On 2018-12-13 19:43, Markus Armbruster wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
> code accordingly.
> 
> Made conditional:
> 
> * xen-set-replication, query-xen-replication-status,
>   xen-colo-do-checkpoint
> 
>   Before the patch, we first register the commands unconditionally in
>   generated code (requires a stub), then conditionally unregister in
>   qmp_unregister_commands_hack().
> 
>   Afterwards, we register only when CONFIG_REPLICATION.  The command
>   fails exactly the same, with CommandNotFound.
> 
>   Improvement, because now query-qmp-schema is accurate, and we're one
>   step closer to killing qmp_unregister_commands_hack().
> 
> * enum BlockdevDriver value "replication" in command blockdev-add
> 
> * BlockdevOptions variant @replication
> 
> and related structures.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
> Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  migration/colo.c     | 16 ++++------------
>  monitor.c            |  5 -----
>  qapi/block-core.json | 13 +++++++++----
>  qapi/migration.json  | 12 ++++++++----
>  4 files changed, 21 insertions(+), 25 deletions(-)

I think this might have broken compilation with --disable-replication:

 https://gitlab.com/huth/qemu/-/jobs/135648240

Any ideas how to fix it?

 Thomas
Marc-André Lureau Dec. 17, 2018, 6:38 p.m. UTC | #2
Hi

On Mon, Dec 17, 2018 at 8:01 PM Thomas Huth <thuth@redhat.com> wrote:
>
> On 2018-12-13 19:43, Markus Armbruster wrote:
> > From: Marc-André Lureau <marcandre.lureau@redhat.com>
> >
> > Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
> > code accordingly.
> >
> > Made conditional:
> >
> > * xen-set-replication, query-xen-replication-status,
> >   xen-colo-do-checkpoint
> >
> >   Before the patch, we first register the commands unconditionally in
> >   generated code (requires a stub), then conditionally unregister in
> >   qmp_unregister_commands_hack().
> >
> >   Afterwards, we register only when CONFIG_REPLICATION.  The command
> >   fails exactly the same, with CommandNotFound.
> >
> >   Improvement, because now query-qmp-schema is accurate, and we're one
> >   step closer to killing qmp_unregister_commands_hack().
> >
> > * enum BlockdevDriver value "replication" in command blockdev-add
> >
> > * BlockdevOptions variant @replication
> >
> > and related structures.
> >
> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> > Reviewed-by: Markus Armbruster <armbru@redhat.com>
> > Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
> > Signed-off-by: Markus Armbruster <armbru@redhat.com>
> > ---
> >  migration/colo.c     | 16 ++++------------
> >  monitor.c            |  5 -----
> >  qapi/block-core.json | 13 +++++++++----
> >  qapi/migration.json  | 12 ++++++++----
> >  4 files changed, 21 insertions(+), 25 deletions(-)
>
> I think this might have broken compilation with --disable-replication:
>
>  https://gitlab.com/huth/qemu/-/jobs/135648240
>
> Any ideas how to fix it?

We introduced a regression by dropping osdep.h include from headers.

To me, it's best to include osdep.h in headers, since the ifdef exist
there. But I have been told we include it in .c instead. I'll upstream
the qapi/scripts to include it.

thanks for the report, sorry for the regression
Markus Armbruster Dec. 17, 2018, 7:18 p.m. UTC | #3
Thomas Huth <thuth@redhat.com> writes:

> On 2018-12-13 19:43, Markus Armbruster wrote:
>> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>> 
>> Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
>> code accordingly.
>> 
>> Made conditional:
>> 
>> * xen-set-replication, query-xen-replication-status,
>>   xen-colo-do-checkpoint
>> 
>>   Before the patch, we first register the commands unconditionally in
>>   generated code (requires a stub), then conditionally unregister in
>>   qmp_unregister_commands_hack().
>> 
>>   Afterwards, we register only when CONFIG_REPLICATION.  The command
>>   fails exactly the same, with CommandNotFound.
>> 
>>   Improvement, because now query-qmp-schema is accurate, and we're one
>>   step closer to killing qmp_unregister_commands_hack().
>> 
>> * enum BlockdevDriver value "replication" in command blockdev-add
>> 
>> * BlockdevOptions variant @replication
>> 
>> and related structures.
>> 
>> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
>> Reviewed-by: Markus Armbruster <armbru@redhat.com>
>> Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>>  migration/colo.c     | 16 ++++------------
>>  monitor.c            |  5 -----
>>  qapi/block-core.json | 13 +++++++++----
>>  qapi/migration.json  | 12 ++++++++----
>>  4 files changed, 21 insertions(+), 25 deletions(-)
>
> I think this might have broken compilation with --disable-replication:
>
>  https://gitlab.com/huth/qemu/-/jobs/135648240

Reproduced.

> Any ideas how to fix it?

The problem is fairly obvious, repair less so.  Sorry this escaped
review.

Union BlockdevCreateOptions doesn't specify a variant for tag
'replication'.  The default variant needs to inherits its condition from
the enumeration value.  I hope we can develop a fix quickly.
Markus Armbruster Dec. 18, 2018, 7:03 a.m. UTC | #4
Marc-André Lureau <marcandre.lureau@gmail.com> writes:

> Hi
>
> On Mon, Dec 17, 2018 at 8:01 PM Thomas Huth <thuth@redhat.com> wrote:
>>
>> On 2018-12-13 19:43, Markus Armbruster wrote:
>> > From: Marc-André Lureau <marcandre.lureau@redhat.com>
>> >
>> > Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
>> > code accordingly.
>> >
>> > Made conditional:
>> >
>> > * xen-set-replication, query-xen-replication-status,
>> >   xen-colo-do-checkpoint
>> >
>> >   Before the patch, we first register the commands unconditionally in
>> >   generated code (requires a stub), then conditionally unregister in
>> >   qmp_unregister_commands_hack().
>> >
>> >   Afterwards, we register only when CONFIG_REPLICATION.  The command
>> >   fails exactly the same, with CommandNotFound.
>> >
>> >   Improvement, because now query-qmp-schema is accurate, and we're one
>> >   step closer to killing qmp_unregister_commands_hack().
>> >
>> > * enum BlockdevDriver value "replication" in command blockdev-add
>> >
>> > * BlockdevOptions variant @replication
>> >
>> > and related structures.
>> >
>> > Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
>> > Reviewed-by: Markus Armbruster <armbru@redhat.com>
>> > Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
>> > Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> > ---
>> >  migration/colo.c     | 16 ++++------------
>> >  monitor.c            |  5 -----
>> >  qapi/block-core.json | 13 +++++++++----
>> >  qapi/migration.json  | 12 ++++++++----
>> >  4 files changed, 21 insertions(+), 25 deletions(-)
>>
>> I think this might have broken compilation with --disable-replication:
>>
>>  https://gitlab.com/huth/qemu/-/jobs/135648240
>>
>> Any ideas how to fix it?
>
> We introduced a regression by dropping osdep.h include from headers.
>
> To me, it's best to include osdep.h in headers, since the ifdef exist
> there. But I have been told we include it in .c instead. I'll upstream
> the qapi/scripts to include it.

This can't be the cause: qapi/qapi-visit-block-core.c includes osdep.h
first, like all our .c files.

> thanks for the report, sorry for the regression

You've since posted a fix to add the missing ifdeffery.  I'm testing it
while I write :)
Thomas Huth Dec. 18, 2018, 8:27 a.m. UTC | #5
On 2018-12-17 20:18, Markus Armbruster wrote:
> Thomas Huth <thuth@redhat.com> writes:
> 
>> On 2018-12-13 19:43, Markus Armbruster wrote:
>>> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>>>
>>> Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the
>>> code accordingly.
>>>
>>> Made conditional:
>>>
>>> * xen-set-replication, query-xen-replication-status,
>>>   xen-colo-do-checkpoint
>>>
>>>   Before the patch, we first register the commands unconditionally in
>>>   generated code (requires a stub), then conditionally unregister in
>>>   qmp_unregister_commands_hack().
>>>
>>>   Afterwards, we register only when CONFIG_REPLICATION.  The command
>>>   fails exactly the same, with CommandNotFound.
>>>
>>>   Improvement, because now query-qmp-schema is accurate, and we're one
>>>   step closer to killing qmp_unregister_commands_hack().
>>>
>>> * enum BlockdevDriver value "replication" in command blockdev-add
>>>
>>> * BlockdevOptions variant @replication
>>>
>>> and related structures.
>>>
>>> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
>>> Reviewed-by: Markus Armbruster <armbru@redhat.com>
>>> Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com>
>>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>>> ---
>>>  migration/colo.c     | 16 ++++------------
>>>  monitor.c            |  5 -----
>>>  qapi/block-core.json | 13 +++++++++----
>>>  qapi/migration.json  | 12 ++++++++----
>>>  4 files changed, 21 insertions(+), 25 deletions(-)
>>
>> I think this might have broken compilation with --disable-replication:
>>
>>  https://gitlab.com/huth/qemu/-/jobs/135648240
> 
> Reproduced.
> 
>> Any ideas how to fix it?
> 
> The problem is fairly obvious, repair less so.  Sorry this escaped
> review.

This is the second time in 2 months that compilation with
--disable-replication broke. So instead of relying on reviews here, I
think we should catch this with Patchew / some docker based compilation
test instead that configures the build process with everything disabled,
e.g.:

 ./configure --enable-werror --disable-rdma --disable-slirp \
   --disable-curl --disable-capstone --disable-live-block-migration \
   --disable-glusterfs --disable-replication --disable-coroutine-pool \
   --disable-smartcard --disable-guest-agent --disable-curses \
   --disable-libxml2 --disable-tpm --disable-qom-cast-debug \
   --disable-spice --disable-vhost-vsock  --disable-vhost-net \
   --disable-vhost-crypto --disable-vhost-user ...

(I'm still one of those docker agnostics ... so if someone wants to come
up with a patch, I'd be very glad ... otherwise it'll take some time
'til I figured it out how to add a docker based test for this...)

 Thanks,
  Thomas
Markus Armbruster Dec. 18, 2018, 10:08 a.m. UTC | #6
Thomas Huth <thuth@redhat.com> writes:

> This is the second time in 2 months that compilation with
> --disable-replication broke. So instead of relying on reviews here, I
> think we should catch this with Patchew / some docker based compilation
> test instead that configures the build process with everything disabled,
> e.g.:
>
>  ./configure --enable-werror --disable-rdma --disable-slirp \
>    --disable-curl --disable-capstone --disable-live-block-migration \
>    --disable-glusterfs --disable-replication --disable-coroutine-pool \
>    --disable-smartcard --disable-guest-agent --disable-curses \
>    --disable-libxml2 --disable-tpm --disable-qom-cast-debug \
>    --disable-spice --disable-vhost-vsock  --disable-vhost-net \
>    --disable-vhost-crypto --disable-vhost-user ...
>
> (I'm still one of those docker agnostics ... so if someone wants to come
> up with a patch, I'd be very glad ... otherwise it'll take some time
> 'til I figured it out how to add a docker based test for this...)

In my limited experience, a "disable everything" build requires more
frequent tinkering than I'd like.  A --disable-all would be nice for
this, but I can't spare the time right now.  Any takers?
diff mbox series

Patch

diff --git a/migration/colo.c b/migration/colo.c
index fcff04c78c..398b239d1c 100644
--- a/migration/colo.c
+++ b/migration/colo.c
@@ -24,7 +24,9 @@ 
 #include "trace.h"
 #include "qemu/error-report.h"
 #include "migration/failover.h"
+#ifdef CONFIG_REPLICATION
 #include "replication.h"
+#endif
 #include "net/colo-compare.h"
 #include "net/colo.h"
 #include "block/block.h"
@@ -201,11 +203,11 @@  void colo_do_failover(MigrationState *s)
     }
 }
 
+#ifdef CONFIG_REPLICATION
 void qmp_xen_set_replication(bool enable, bool primary,
                              bool has_failover, bool failover,
                              Error **errp)
 {
-#ifdef CONFIG_REPLICATION
     ReplicationMode mode = primary ?
                            REPLICATION_MODE_PRIMARY :
                            REPLICATION_MODE_SECONDARY;
@@ -224,14 +226,10 @@  void qmp_xen_set_replication(bool enable, bool primary,
         }
         replication_stop_all(failover, failover ? NULL : errp);
     }
-#else
-    abort();
-#endif
 }
 
 ReplicationStatus *qmp_query_xen_replication_status(Error **errp)
 {
-#ifdef CONFIG_REPLICATION
     Error *err = NULL;
     ReplicationStatus *s = g_new0(ReplicationStatus, 1);
 
@@ -246,19 +244,13 @@  ReplicationStatus *qmp_query_xen_replication_status(Error **errp)
 
     error_free(err);
     return s;
-#else
-    abort();
-#endif
 }
 
 void qmp_xen_colo_do_checkpoint(Error **errp)
 {
-#ifdef CONFIG_REPLICATION
     replication_do_checkpoint_all(errp);
-#else
-    abort();
-#endif
 }
+#endif
 
 COLOStatus *qmp_query_colo_status(Error **errp)
 {
diff --git a/monitor.c b/monitor.c
index cf9cece965..7848a3cb0d 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1147,11 +1147,6 @@  static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
  */
 static void qmp_unregister_commands_hack(void)
 {
-#ifndef CONFIG_REPLICATION
-    qmp_unregister_command(&qmp_commands, "xen-set-replication");
-    qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
-    qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
-#endif
 #ifndef TARGET_I386
     qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
     qmp_unregister_command(&qmp_commands, "query-sev");
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 92e0205d91..762000f31f 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2623,7 +2623,9 @@ 
             'copy-on-read', 'dmg', 'file', 'ftp', 'ftps', 'gluster',
             'host_cdrom', 'host_device', 'http', 'https', 'iscsi', 'luks',
             'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels', 'qcow',
-            'qcow2', 'qed', 'quorum', 'raw', 'rbd', 'replication', 'sheepdog',
+            'qcow2', 'qed', 'quorum', 'raw', 'rbd',
+            { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
+            'sheepdog',
             'ssh', 'throttle', 'vdi', 'vhdx', 'vmdk', 'vpc', 'vvfat', 'vxhs' ] }
 
 ##
@@ -3380,7 +3382,8 @@ 
 #
 # Since: 2.9
 ##
-{ 'enum' : 'ReplicationMode', 'data' : [ 'primary', 'secondary' ] }
+{ 'enum' : 'ReplicationMode', 'data' : [ 'primary', 'secondary' ],
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @BlockdevOptionsReplication:
@@ -3398,7 +3401,8 @@ 
 { 'struct': 'BlockdevOptionsReplication',
   'base': 'BlockdevOptionsGenericFormat',
   'data': { 'mode': 'ReplicationMode',
-            '*top-id': 'str' } }
+            '*top-id': 'str' },
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @NFSTransport:
@@ -3714,7 +3718,8 @@ 
       'quorum':     'BlockdevOptionsQuorum',
       'raw':        'BlockdevOptionsRaw',
       'rbd':        'BlockdevOptionsRbd',
-      'replication':'BlockdevOptionsReplication',
+      'replication': { 'type': 'BlockdevOptionsReplication',
+                       'if': 'defined(CONFIG_REPLICATION)' },
       'sheepdog':   'BlockdevOptionsSheepdog',
       'ssh':        'BlockdevOptionsSsh',
       'throttle':   'BlockdevOptionsThrottle',
diff --git a/qapi/migration.json b/qapi/migration.json
index 5fd33316a0..31b589ec26 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1257,7 +1257,8 @@ 
 # Since: 2.9
 ##
 { 'command': 'xen-set-replication',
-  'data': { 'enable': 'bool', 'primary': 'bool', '*failover' : 'bool' } }
+  'data': { 'enable': 'bool', 'primary': 'bool', '*failover' : 'bool' },
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @ReplicationStatus:
@@ -1272,7 +1273,8 @@ 
 # Since: 2.9
 ##
 { 'struct': 'ReplicationStatus',
-  'data': { 'error': 'bool', '*desc': 'str' } }
+  'data': { 'error': 'bool', '*desc': 'str' },
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @query-xen-replication-status:
@@ -1289,7 +1291,8 @@ 
 # Since: 2.9
 ##
 { 'command': 'query-xen-replication-status',
-  'returns': 'ReplicationStatus' }
+  'returns': 'ReplicationStatus',
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @xen-colo-do-checkpoint:
@@ -1305,7 +1308,8 @@ 
 #
 # Since: 2.9
 ##
-{ 'command': 'xen-colo-do-checkpoint' }
+{ 'command': 'xen-colo-do-checkpoint',
+  'if': 'defined(CONFIG_REPLICATION)' }
 
 ##
 # @COLOStatus: