| Message ID | 1368128600-30721-3-git-send-email-chegu_vinod@hp.com |
|---|---|
| State | New |
| Headers | show |
Il 09/05/2013 21:43, Chegu Vinod ha scritto: > The auto-converge migration capability allows the user to specify if they > choose live migration seqeunce to automatically detect and force convergence. > > Signed-off-by: Chegu Vinod <chegu_vinod@hp.com> > --- > include/migration/migration.h | 2 ++ > migration.c | 9 +++++++++ > qapi-schema.json | 5 ++++- > 3 files changed, 15 insertions(+), 1 deletions(-) > > diff --git a/include/migration/migration.h b/include/migration/migration.h > index e2acec6..ace91b0 100644 > --- a/include/migration/migration.h > +++ b/include/migration/migration.h > @@ -127,4 +127,6 @@ int migrate_use_xbzrle(void); > int64_t migrate_xbzrle_cache_size(void); > > int64_t xbzrle_cache_resize(int64_t new_size); > + > +bool migrate_auto_converge(void); > #endif > diff --git a/migration.c b/migration.c > index 3eb0fad..570cee5 100644 > --- a/migration.c > +++ b/migration.c > @@ -474,6 +474,15 @@ void qmp_migrate_set_downtime(double value, Error **errp) > max_downtime = (uint64_t)value; > } > > +bool migrate_auto_converge(void) > +{ > + MigrationState *s; > + > + s = migrate_get_current(); > + > + return s->enabled_capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE]; > +} > + > int migrate_use_xbzrle(void) > { > MigrationState *s; > diff --git a/qapi-schema.json b/qapi-schema.json > index 199744a..b33839c 100644 > --- a/qapi-schema.json > +++ b/qapi-schema.json > @@ -602,10 +602,13 @@ > # This feature allows us to minimize migration traffic for certain work > # loads, by sending compressed difference of the pages > # > +# @auto-converge: Migration supports automatic throttling down of guest > +# to force convergence. (since 1.6) If enabled, QEMU will automatically throttle down the guest to speed up convergence of RAM migration. > +# > # Since: 1.2 > ## > { 'enum': 'MigrationCapability', > - 'data': ['xbzrle'] } > + 'data': ['xbzrle', 'auto-converge'] } > > ## > # @MigrationCapabilityStatus > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
On 05/10/2013 01:43 AM, Paolo Bonzini wrote: >> +++ b/qapi-schema.json >> @@ -602,10 +602,13 @@ >> # This feature allows us to minimize migration traffic for certain work >> # loads, by sending compressed difference of the pages >> # >> +# @auto-converge: Migration supports automatic throttling down of guest >> +# to force convergence. (since 1.6) > > If enabled, QEMU will automatically throttle down the guest to speed up > convergence of RAM migration. Ooh, I do like Paolo's wording better than mine. But either one is reasonable, so feel free to add: Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/include/migration/migration.h b/include/migration/migration.h index e2acec6..ace91b0 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -127,4 +127,6 @@ int migrate_use_xbzrle(void); int64_t migrate_xbzrle_cache_size(void); int64_t xbzrle_cache_resize(int64_t new_size); + +bool migrate_auto_converge(void); #endif diff --git a/migration.c b/migration.c index 3eb0fad..570cee5 100644 --- a/migration.c +++ b/migration.c @@ -474,6 +474,15 @@ void qmp_migrate_set_downtime(double value, Error **errp) max_downtime = (uint64_t)value; } +bool migrate_auto_converge(void) +{ + MigrationState *s; + + s = migrate_get_current(); + + return s->enabled_capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE]; +} + int migrate_use_xbzrle(void) { MigrationState *s; diff --git a/qapi-schema.json b/qapi-schema.json index 199744a..b33839c 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -602,10 +602,13 @@ # This feature allows us to minimize migration traffic for certain work # loads, by sending compressed difference of the pages # +# @auto-converge: Migration supports automatic throttling down of guest +# to force convergence. (since 1.6) +# # Since: 1.2 ## { 'enum': 'MigrationCapability', - 'data': ['xbzrle'] } + 'data': ['xbzrle', 'auto-converge'] } ## # @MigrationCapabilityStatus
The auto-converge migration capability allows the user to specify if they choose live migration seqeunce to automatically detect and force convergence. Signed-off-by: Chegu Vinod <chegu_vinod@hp.com> --- include/migration/migration.h | 2 ++ migration.c | 9 +++++++++ qapi-schema.json | 5 ++++- 3 files changed, 15 insertions(+), 1 deletions(-)