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-rw-r--r--migration/block-dirty-bitmap.c6
-rwxr-xr-xtests/qemu-iotests/tests/migrate-bitmaps-postcopy-test10
2 files changed, 16 insertions, 0 deletions
diff --git a/migration/block-dirty-bitmap.c b/migration/block-dirty-bitmap.c
index 975093610a..35f5ef688d 100644
--- a/migration/block-dirty-bitmap.c
+++ b/migration/block-dirty-bitmap.c
@@ -839,6 +839,8 @@ static int dirty_bitmap_load_start(QEMUFile *f, DBMLoadState *s)
error_report_err(local_err);
return -EINVAL;
}
+ } else {
+ bdrv_dirty_bitmap_set_busy(s->bitmap, true);
}
b = g_new(LoadBitmapState, 1);
@@ -914,6 +916,8 @@ static void cancel_incoming_locked(DBMLoadState *s)
assert(!s->before_vm_start_handled || !b->migrated);
if (bdrv_dirty_bitmap_has_successor(b->bitmap)) {
bdrv_reclaim_dirty_bitmap(b->bitmap, &error_abort);
+ } else {
+ bdrv_dirty_bitmap_set_busy(b->bitmap, false);
}
bdrv_release_dirty_bitmap(b->bitmap);
}
@@ -951,6 +955,8 @@ static void dirty_bitmap_load_complete(QEMUFile *f, DBMLoadState *s)
if (bdrv_dirty_bitmap_has_successor(s->bitmap)) {
bdrv_reclaim_dirty_bitmap(s->bitmap, &error_abort);
+ } else {
+ bdrv_dirty_bitmap_set_busy(s->bitmap, false);
}
for (item = s->bitmaps; item; item = g_slist_next(item)) {
diff --git a/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test b/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
index d046ebeb94..584062b412 100755
--- a/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
+++ b/tests/qemu-iotests/tests/migrate-bitmaps-postcopy-test
@@ -224,6 +224,16 @@ class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
self.start_postcopy()
self.vm_b_events += self.vm_b.get_qmp_events()
+
+ # While being here, let's check that we can't remove in-flight bitmaps.
+ for vm in (self.vm_a, self.vm_b):
+ for i in range(0, nb_bitmaps):
+ result = vm.qmp('block-dirty-bitmap-remove', node='drive0',
+ name=f'bitmap{i}')
+ self.assert_qmp(result, 'error/desc',
+ f"Bitmap 'bitmap{i}' is currently in use by "
+ "another operation and cannot be used")
+
self.vm_b.shutdown()
# recreate vm_b, so there is no incoming option, which prevents
# loading bitmaps from disk