block migration: Report progress also via info migration

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

block-migration.c

@@ -91,6 +91,38 @@ static void blk_send(QEMUFile *f, BlkMigBlock * blk)
     qemu_put_buffer(f, blk->buf, BLOCK_SIZE);
 }
 
+int blk_mig_active(void)
+{
+    return !QSIMPLEQ_EMPTY(&block_mig_state.bmds_list);
+}
+
+uint64_t blk_mig_bytes_transferred(void)
+{
+    BlkMigDevState *bmds;
+    uint64_t sum = 0;
+
+    QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
+        sum += bmds->completed_sectors;
+    }
+    return sum << BDRV_SECTOR_BITS;
+}
+
+uint64_t blk_mig_bytes_remaining(void)
+{
+    return blk_mig_bytes_total() - blk_mig_bytes_transferred();
+}
+
+uint64_t blk_mig_bytes_total(void)
+{
+    BlkMigDevState *bmds;
+    uint64_t sum = 0;
+
+    QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
+        sum += bmds->total_sectors;
+    }
+    return sum << BDRV_SECTOR_BITS;
+}
+
 static void blk_mig_read_cb(void *opaque, int ret)
 {
     BlkMigBlock *blk = opaque;

block-migration.h

@@ -15,5 +15,9 @@
 #define BLOCK_MIGRATION_H
 
 void blk_mig_init(void);
+int blk_mig_active(void);
+uint64_t blk_mig_bytes_transferred(void);
+uint64_t blk_mig_bytes_remaining(void);
+uint64_t blk_mig_bytes_total(void);
 
 #endif /* BLOCK_MIGRATION_H */

migration.c

@@ -18,6 +18,7 @@
 #include "sysemu.h"
 #include "block.h"
 #include "qemu_socket.h"
+#include "block-migration.h"
 
 //#define DEBUG_MIGRATION
 
@@ -174,6 +175,14 @@ void do_info_migrate(Monitor *mon)
             monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n", ram_bytes_transferred() >> 10);
             monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n", ram_bytes_remaining() >> 10);
             monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n", ram_bytes_total() >> 10);
+            if (blk_mig_active()) {
+                monitor_printf(mon, "transferred disk: %" PRIu64 " kbytes\n",
+                               blk_mig_bytes_transferred() >> 10);
+                monitor_printf(mon, "remaining disk: %" PRIu64 " kbytes\n",
+                               blk_mig_bytes_remaining() >> 10);
+                monitor_printf(mon, "total disk: %" PRIu64 " kbytes\n",
+                               blk_mig_bytes_total() >> 10);
+            }
             break;
         case MIG_STATE_COMPLETED:
             monitor_printf(mon, "completed\n");