Commit 2c9639ec authored by Zhang Chen's avatar Zhang Chen Committed by Stefano Stabellini
Browse files

Add a new qmp command to start/stop replication 



We can call this qmp command to start/stop replication outside of qemu.
Like Xen colo need this function.

Signed-off-by: default avatarZhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: default avatarWen Congyang <wencongyang@gmail.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Reviewed-by: default avatarStefano Stabellini <sstabellini@kernel.org>
Reviewed-by: default avatarzhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: default avatarStefano Stabellini <sstabellini@kernel.org>
parent 7d1730b7

migration/colo.c

+26 −0
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ 
#include "qemu/error-report.h"

#include "qapi/error.h"

#include "migration/failover.h"

#include "replication.h"

#include "qmp-commands.h"



static bool vmstate_loading;
@@ -147,6 +149,30 @@ void colo_do_failover(MigrationState *s) 
    }

}



void qmp_xen_set_replication(bool enable, bool primary,

                             bool has_failover, bool failover,

                             Error **errp)

{

    ReplicationMode mode = primary ?

                           REPLICATION_MODE_PRIMARY :

                           REPLICATION_MODE_SECONDARY;



    if (has_failover && enable) {

        error_setg(errp, "Parameter 'failover' is only for"

                   " stopping replication");

        return;

    }



    if (enable) {

        replication_start_all(mode, errp);

    } else {

        if (!has_failover) {

            failover = NULL;

        }

        replication_stop_all(failover, failover ? NULL : errp);

    }

}



static void colo_send_message(QEMUFile *f, COLOMessage msg,

                              Error **errp)

{

qapi-schema.json

+25 −0
Original line number Diff line number Diff line
@@ -5989,6 +5989,31 @@ 
##

{ 'command': 'xen-load-devices-state', 'data': {'filename': 'str'} }



##

# @xen-set-replication:

#

# Enable or disable replication.

#

# @enable: true to enable, false to disable.

#

# @primary: true for primary or false for secondary.

#

# @failover: #optional true to do failover, false to stop. but cannot be

#            specified if 'enable' is true. default value is false.

#

# Returns: nothing.

#

# Example:

#

# -> { "execute": "xen-set-replication",

#      "arguments": {"enable": true, "primary": false} }

# <- { "return": {} }

#

# Since: 2.9

##

{ 'command': 'xen-set-replication',

  'data': { 'enable': 'bool', 'primary': 'bool', '*failover' : 'bool' } }



##

# @GICCapability:

#