| Message ID | 1482831516-21862-2-git-send-email-zhangchen.fnst@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, 27 Dec 2016, Zhang Chen wrote: > We can call this qmp command to start/stop replication outside of qemu. > Like Xen colo need this function. > > Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> > Signed-off-by: Wen Congyang <wencongyang@gmail.com> > Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> > --- > docs/qmp-commands.txt | 18 ++++++++++++++++++ > migration/colo.c | 23 +++++++++++++++++++++++ > qapi-schema.json | 19 +++++++++++++++++++ > 3 files changed, 60 insertions(+) > > diff --git a/docs/qmp-commands.txt b/docs/qmp-commands.txt > index abf210a..d182147 100644 > --- a/docs/qmp-commands.txt > +++ b/docs/qmp-commands.txt > @@ -432,6 +432,24 @@ Example: > "arguments": { "enable": true } } > <- { "return": {} } > > +xen-set-replication > +------------------- > + > +Enable or disable replication. > + > +Arguments: > + > +- "enable": Enable it or disable it. > +- "primary": True for primary or false for secondary. > +- "failover": Enable failover when stopping replication, but cannot be > + specified if 'enable' is true (optional, default false). > + > +Example: > + > +-> { "execute": "xen-set-replication", > + "arguments": {"enable": true, "primary": false} } > +<- { "return": {} } > + > migrate > ------- > > diff --git a/migration/colo.c b/migration/colo.c > index 93c85c5..6fc2ade 100644 > --- a/migration/colo.c > +++ b/migration/colo.c > @@ -19,6 +19,8 @@ > #include "qemu/error-report.h" > #include "qapi/error.h" > #include "migration/failover.h" > +#include "replication.h" > +#include "qmp-commands.h" > > #define COLO_BUFFER_BASE_SIZE (4 * 1024 * 1024) > > @@ -104,6 +106,27 @@ 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 { > + replication_stop_all(failover, failover ? NULL : errp); > + } > +} > + > static void colo_send_message(QEMUFile *f, COLOMessage msg, > Error **errp) > { > diff --git a/qapi-schema.json b/qapi-schema.json > index f3e9bfc..78802f4 100644 > --- a/qapi-schema.json > +++ b/qapi-schema.json > @@ -4676,6 +4676,25 @@ > { '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. > +# > +# Since: 2.9 > +## > +{ 'command': 'xen-set-replication', > + 'data': { 'enable': 'bool', 'primary': 'bool', '*failover' : 'bool' } } > + > +## > # @GICCapability: > # > # The struct describes capability for a specific GIC (Generic > -- > 2.7.4 > > > >
diff --git a/docs/qmp-commands.txt b/docs/qmp-commands.txt index abf210a..d182147 100644 --- a/docs/qmp-commands.txt +++ b/docs/qmp-commands.txt @@ -432,6 +432,24 @@ Example: "arguments": { "enable": true } } <- { "return": {} } +xen-set-replication +------------------- + +Enable or disable replication. + +Arguments: + +- "enable": Enable it or disable it. +- "primary": True for primary or false for secondary. +- "failover": Enable failover when stopping replication, but cannot be + specified if 'enable' is true (optional, default false). + +Example: + +-> { "execute": "xen-set-replication", + "arguments": {"enable": true, "primary": false} } +<- { "return": {} } + migrate ------- diff --git a/migration/colo.c b/migration/colo.c index 93c85c5..6fc2ade 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -19,6 +19,8 @@ #include "qemu/error-report.h" #include "qapi/error.h" #include "migration/failover.h" +#include "replication.h" +#include "qmp-commands.h" #define COLO_BUFFER_BASE_SIZE (4 * 1024 * 1024) @@ -104,6 +106,27 @@ 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 { + replication_stop_all(failover, failover ? NULL : errp); + } +} + static void colo_send_message(QEMUFile *f, COLOMessage msg, Error **errp) { diff --git a/qapi-schema.json b/qapi-schema.json index f3e9bfc..78802f4 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -4676,6 +4676,25 @@ { '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. +# +# Since: 2.9 +## +{ 'command': 'xen-set-replication', + 'data': { 'enable': 'bool', 'primary': 'bool', '*failover' : 'bool' } } + +## # @GICCapability: # # The struct describes capability for a specific GIC (Generic