Introduce UI for live migration

This patch introduces a command line parameter and monitor command for starting
a live migration.  The next patch will provide an example of how to use these
parameters.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5476 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 83 insertions, 0 deletions

diff --git a/migration.c b/migration.c
new file mode 100644
index 0000000000..732fe3fe4c
--- /dev/null
+++ b/migration.c
@@ -0,0 +1,83 @@
+/*
+ * QEMU live migration
+ *
+ * Copyright IBM, Corp. 2008
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu-common.h"
+#include "migration.h"
+#include "console.h"
+
+/* Migration speed throttling */
+static uint32_t max_throttle = (32 << 20);
+
+static MigrationState *current_migration;
+
+void qemu_start_incoming_migration(const char *uri)
+{
+    fprintf(stderr, "unknown migration protocol: %s\n", uri);
+}
+
+void do_migrate(int detach, const char *uri)
+{
+    term_printf("unknown migration protocol: %s\n", uri);
+}
+
+void do_migrate_cancel(void)
+{
+    MigrationState *s = current_migration;
+
+    if (s)
+	s->cancel(s);
+}
+
+void do_migrate_set_speed(const char *value)
+{
+    double d;
+    char *ptr;
+
+    d = strtod(value, &ptr);
+    switch (*ptr) {
+    case 'G': case 'g':
+	d *= 1024;
+    case 'M': case 'm':
+	d *= 1024;
+    case 'K': case 'k':
+	d *= 1024;
+    default:
+	break;
+    }
+
+    max_throttle = (uint32_t)d;
+}
+
+void do_info_migrate(void)
+{
+    MigrationState *s = current_migration;
+    
+    if (s) {
+	term_printf("Migration status: ");
+	switch (s->get_status(s)) {
+	case MIG_STATE_ACTIVE:
+	    term_printf("active\n");
+	    break;
+	case MIG_STATE_COMPLETED:
+	    term_printf("completed\n");
+	    break;
+	case MIG_STATE_ERROR:
+	    term_printf("failed\n");
+	    break;
+	case MIG_STATE_CANCELLED:
+	    term_printf("cancelled\n");
+	    break;
+	}
+    }
+}
+