The seamless-migration flag is required in order to identify
whether libvirt supports the new QEVENT_SPICE_MIGRATE_COMPLETED or not
(by default the flag is off).
New libvirt versions that wait for QEVENT_SPICE_MIGRATE_COMPLETED should turn
on this flag.
When this flag is off, spice fallbacks to its old migration method, which
can result in data loss.
Signed-off-by: Yonit Halperin <yhalp...@redhat.com>
---
qemu-config.c | 3 +++
qemu-options.hx | 3 +++
ui/spice-core.c | 7 +++++++
3 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/qemu-config.c b/qemu-config.c
index 5c3296b..b7bb28f 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -524,6 +524,9 @@ QemuOptsList qemu_spice_opts = {
},{
.name = "playback-compression",
.type = QEMU_OPT_BOOL,
+ }, {
+ .name = "seamless-migration",
+ .type = QEMU_OPT_BOOL,
},
{ /* end of list */ }
},
diff --git a/qemu-options.hx b/qemu-options.hx
index 47cb5bd..0727f4f 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -917,6 +917,9 @@ Enable/disable passing mouse events via vdagent. Default
is on.
@item playback-compression=[on|off]
Enable/disable audio stream compression (using celt 0.5.1). Default is on.
+@item seamless-migration=[on|off]
+Enable/disable spice seamless migration. Default is off.
+
@end table
ETEXI
diff --git a/ui/spice-core.c b/ui/spice-core.c
index ad7f01a..08a6da9 100644
--- a/ui/spice-core.c
+++ b/ui/spice-core.c
@@ -614,6 +614,9 @@ void qemu_spice_init(void)
int port, tls_port, len, addr_flags;
spice_image_compression_t compression;
spice_wan_compression_t wan_compr;
+#if SPICE_SERVER_VERSION >= 0x000b02 /* 0.11.2 */
+ bool seamless_migration;
+#endif
qemu_thread_get_self(&me);
@@ -757,6 +760,10 @@ void qemu_spice_init(void)
spice_server_set_uuid(spice_server, qemu_uuid);
#endif
+#if SPICE_SERVER_VERSION >= 0x000b02 /* 0.11.2 */
+ seamless_migration = qemu_opt_get_bool(opts, "seamless-migration", 0);
+ spice_server_set_seamless_migration(spice_server, seamless_migration);
+#endif
if (0 != spice_server_init(spice_server, &core_interface)) {
error_report("failed to initialize spice server");
exit(1);
--
1.7.7.6
