vdi: Change 'static' create option to 'preallocation' in QMP

What static=on really does is what we call metadata preallocation for
other block drivers. While we can still change the QMP interface, make
it more consistent by using 'preallocation' for VDI, too.

This doesn't implement any new functionality, so the only supported
preallocation modes are 'off' and 'metadata' for now.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

1 files changed, 22 insertions, 2 deletions

diff --git a/block/vdi.c b/block/vdi.c
index d939b034c4..73c059e69d 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -728,7 +728,7 @@ static int coroutine_fn vdi_co_do_create(BlockdevCreateOptions *create_options,
     int ret = 0;
     uint64_t bytes = 0;
     uint32_t blocks;
-    uint32_t image_type = VDI_TYPE_DYNAMIC;
+    uint32_t image_type;
     VdiHeader header;
     size_t i;
     size_t bmap_size;
@@ -744,9 +744,22 @@ static int coroutine_fn vdi_co_do_create(BlockdevCreateOptions *create_options,
 
     /* Validate options and set default values */
     bytes = vdi_opts->size;
-    if (vdi_opts->q_static) {
+
+    if (!vdi_opts->has_preallocation) {
+        vdi_opts->preallocation = PREALLOC_MODE_OFF;
+    }
+    switch (vdi_opts->preallocation) {
+    case PREALLOC_MODE_OFF:
+        image_type = VDI_TYPE_DYNAMIC;
+        break;
+    case PREALLOC_MODE_METADATA:
         image_type = VDI_TYPE_STATIC;
+        break;
+    default:
+        error_setg(errp, "Preallocation mode not supported for vdi");
+        return -EINVAL;
     }
+
 #ifndef CONFIG_VDI_STATIC_IMAGE
     if (image_type == VDI_TYPE_STATIC) {
         ret = -ENOTSUP;
@@ -874,6 +887,7 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
     BlockdevCreateOptions *create_options = NULL;
     BlockDriverState *bs_file = NULL;
     uint64_t block_size = DEFAULT_CLUSTER_SIZE;
+    bool is_static = false;
     Visitor *v;
     Error *local_err = NULL;
     int ret;
@@ -895,6 +909,9 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
         goto done;
     }
 #endif
+    if (qemu_opt_get_bool_del(opts, BLOCK_OPT_STATIC, false)) {
+        is_static = true;
+    }
 
     qdict = qemu_opts_to_qdict_filtered(opts, NULL, &vdi_create_opts, true);
 
@@ -913,6 +930,9 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts,
 
     qdict_put_str(qdict, "driver", "vdi");
     qdict_put_str(qdict, "file", bs_file->node_name);
+    if (is_static) {
+        qdict_put_str(qdict, "preallocation", "metadata");
+    }
 
     /* Get the QAPI object */
     v = qobject_input_visitor_new_keyval(QOBJECT(qdict));