Signed-off-by: Jiri Denemark <jdenemar@xxxxxxxxxx>
---
Notes:
ACKed in version 1
Version 3:
- no change
Version 2:
- no change
src/qemu/qemu_migration.c | 154 +++++++++++++++++++++++++---------------------
1 file changed, 85 insertions(+), 69 deletions(-)
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index 0c4c94a..4ab6ab7 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -3291,6 +3291,80 @@ qemuMigrationPrepareCleanup(virQEMUDriverPtr driver,
qemuDomainObjDiscardAsyncJob(driver, vm);
}
+static char *
+qemuMigrationPrepareIncoming(virDomainObjPtr vm,
+ bool tunnel,
+ const char *protocol,
+ const char *listenAddress,
+ unsigned short port)
+{
+ qemuDomainObjPrivatePtr priv = vm->privateData;
+ char *migrateFrom = NULL;
+
+ if (tunnel) {
+ if (VIR_STRDUP(migrateFrom, "stdio") < 0)
+ goto cleanup;
+ } else {
+ bool encloseAddress = false;
+ bool hostIPv6Capable = false;
+ bool qemuIPv6Capable = false;
+ struct addrinfo *info = NULL;
+ struct addrinfo hints = { .ai_flags = AI_ADDRCONFIG,
+ .ai_socktype = SOCK_STREAM };
+ const char *incFormat;
+
+ if (getaddrinfo("::", NULL, &hints, &info) == 0) {
+ freeaddrinfo(info);
+ hostIPv6Capable = true;
+ }
+ qemuIPv6Capable = virQEMUCapsGet(priv->qemuCaps,
+ QEMU_CAPS_IPV6_MIGRATION);
+
+ if (listenAddress) {
+ if (virSocketAddrNumericFamily(listenAddress) == AF_INET6) {
+ if (!qemuIPv6Capable) {
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("qemu isn't capable of IPv6"));
+ goto cleanup;
+ }
+ if (!hostIPv6Capable) {
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("host isn't capable of IPv6"));
+ goto cleanup;
+ }
+ /* IPv6 address must be escaped in brackets on the cmd line */
+ encloseAddress = true;
+ } else {
+ /* listenAddress is a hostname or IPv4 */
+ }
+ } else if (qemuIPv6Capable && hostIPv6Capable) {
+ /* Listen on :: instead of 0.0.0.0 if QEMU understands it
+ * and there is at least one IPv6 address configured
+ */
+ listenAddress = "::";
+ encloseAddress = true;
+ } else {
+ listenAddress = "0.0.0.0";
+ }
+
+ /* QEMU will be started with
+ * -incoming protocol:[<IPv6 addr>]:port,
+ * -incoming protocol:<IPv4 addr>:port, or
+ * -incoming protocol:<hostname>:port
+ */
+ if (encloseAddress)
+ incFormat = "%s:[%s]:%d";
+ else
+ incFormat = "%s:%s:%d";
+ if (virAsprintf(&migrateFrom, incFormat,
+ protocol, listenAddress, port) < 0)
+ goto cleanup;
+ }
+
+ cleanup:
+ return migrateFrom;
+}
+
static int
qemuMigrationPrepareAny(virQEMUDriverPtr driver,
virConnectPtr dconn,
@@ -3397,75 +3471,6 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
}
}
- if (tunnel) {
- /* QEMU will be started with -incoming stdio
- * (which qemu_command might convert to exec:cat or fd:n)
- */
- if (VIR_STRDUP(migrateFrom, "stdio") < 0)
- goto cleanup;
- } else {
- bool encloseAddress = false;
- bool hostIPv6Capable = false;
- bool qemuIPv6Capable = false;
- virQEMUCapsPtr qemuCaps = NULL;
- struct addrinfo *info = NULL;
- struct addrinfo hints = { .ai_flags = AI_ADDRCONFIG,
- .ai_socktype = SOCK_STREAM };
- const char *incFormat;
-
- if (getaddrinfo("::", NULL, &hints, &info) == 0) {
- freeaddrinfo(info);
- hostIPv6Capable = true;
- }
- if (!(qemuCaps = virQEMUCapsCacheLookupCopy(driver->qemuCapsCache,
- (*def)->emulator,
- (*def)->os.machine)))
- goto cleanup;
-
- qemuIPv6Capable = virQEMUCapsGet(qemuCaps, QEMU_CAPS_IPV6_MIGRATION);
- virObjectUnref(qemuCaps);
-
- if (listenAddress) {
- if (virSocketAddrNumericFamily(listenAddress) == AF_INET6) {
- if (!qemuIPv6Capable) {
- virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
- _("qemu isn't capable of IPv6"));
- goto cleanup;
- }
- if (!hostIPv6Capable) {
- virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
- _("host isn't capable of IPv6"));
- goto cleanup;
- }
- /* IPv6 address must be escaped in brackets on the cmd line */
- encloseAddress = true;
- } else {
- /* listenAddress is a hostname or IPv4 */
- }
- } else if (qemuIPv6Capable && hostIPv6Capable) {
- /* Listen on :: instead of 0.0.0.0 if QEMU understands it
- * and there is at least one IPv6 address configured
- */
- listenAddress = "::";
- encloseAddress = true;
- } else {
- listenAddress = "0.0.0.0";
- }
-
- /* QEMU will be started with
- * -incoming protocol:[<IPv6 addr>]:port,
- * -incoming protocol:<IPv4 addr>:port, or
- * -incoming protocol:<hostname>:port
- */
- if (encloseAddress)
- incFormat = "%s:[%s]:%d";
- else
- incFormat = "%s:%s:%d";
- if (virAsprintf(&migrateFrom, incFormat,
- protocol, listenAddress, port) < 0)
- goto cleanup;
- }
-
if (!(vm = virDomainObjListAdd(driver->domains, *def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_LIVE |
@@ -3520,6 +3525,17 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
goto endjob;
}
+ virObjectUnref(priv->qemuCaps);
+ priv->qemuCaps = virQEMUCapsCacheLookupCopy(driver->qemuCapsCache,
+ vm->def->emulator,
+ vm->def->os.machine);
+ if (!priv->qemuCaps)
+ goto endjob;
+
+ if (!(migrateFrom = qemuMigrationPrepareIncoming(vm, tunnel, protocol,
+ listenAddress, port)))
+ goto endjob;
+
/* Start the QEMU daemon, with the same command-line arguments plus
* -incoming $migrateFrom
*/
--
2.6.3
--
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