At 05/13/2011 12:04 AM, Daniel P. Berrange Write:
Extend the QEMU migration cookie structure to allow information about the destination host graphics setup to be passed by to the source host. This will enable seamless migration of any connected graphics clients
* src/qemu/qemu_migration.c: Add graphics info to migration cookies * daemon/libvirtd.c: Always initialize gnutls to enable x509 cert parsing in QEMU
snip
+static qemuMigrationCookieGraphicsPtr +qemuMigrationCookieGraphicsXMLParse(xmlXPathContextPtr ctxt) +{ + qemuMigrationCookieGraphicsPtr grap; + char *tmp; + + if (VIR_ALLOC(grap) < 0) + goto no_memory; + + if (!(tmp = virXPathString("string(./graphics/@type)", ctxt))) { + qemuReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("missing type attribute in migration data")); + goto error; + } + if ((grap->type = virDomainGraphicsTypeFromString(tmp)) < 0) { + qemuReportError(VIR_ERR_INTERNAL_ERROR, + _("unknown graphics type %s"), tmp); + VIR_FREE(tmp); + goto error; + } + if (virXPathInt("string(./graphics/@port)", ctxt, &grap->port) < 0) { + qemuReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("missing port attribute in migration data")); + goto error; + } + if (grap->type == VIR_DOMAIN_GRAPHICS_TYPE_SPICE) { + if (virXPathInt("string(./graphics/@tlsPort)", ctxt, &grap->tlsPort) < 0) { + qemuReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("missing tlsPort attribute in migration data")); + goto error; + } + } + if (!(grap->listen = virXPathString("string(./graphics/@listen)", ctxt))) {
If we specify graphics like this: <graphics type='vnc' autoport='yes' listen=''/> virXPathString() will return NULL, and migration will fail.
+ qemuReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("missing listen attribute in migration data")); + goto error; + } + /* Optional */ + grap->tlsSubject = virXPathString("string(./graphics/cert[ info='subject']/@value)", ctxt); + +