[PATCH v4 03/10] migration: migrate 'inc' command option is deprecated.

[Juan Quintela]

Set the 'block_incremental' migration parameter to 'true' instead.

Reviewed-by: Thomas Huth <thuth at redhat.com>
Acked-by: Stefan Hajnoczi <stefanha at redhat.com>
Signed-off-by: Juan Quintela <quintela at redhat.com>

---

Improve documentation and style (thanks Markus)
---
 docs/about/deprecated.rst | 7 +++++++
 qapi/migration.json       | 8 +++++++-
 migration/migration.c     | 6 ++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 1c4d7f36f0..1b6b2870cf 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -452,3 +452,10 @@ Migration
 ``skipped`` field in Migration stats has been deprecated.  It hasn't
 been used for more than 10 years.
 
+``inc`` migrate command option (since 8.2)
+''''''''''''''''''''''''''''''''''''''''''
+
+The new way to modify migration is using migration parameters.
+``inc`` functionality can be achieved by setting the
+``block-incremental`` migration parameter to ``true``.
+
diff --git a/qapi/migration.json b/qapi/migration.json
index 6865fea3c5..56bbd55b87 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1492,6 +1492,11 @@
 #
 # @resume: resume one paused migration, default "off". (since 3.0)
 #
+# Features:
+#
+# @deprecated: Member @inc is deprecated.  Use migration parameter
+#     @block-incremental instead.
+#
 # Returns: nothing on success
 #
 # Since: 0.14
@@ -1513,7 +1518,8 @@
 # <- { "return": {} }
 ##
 { 'command': 'migrate',
-  'data': {'uri': 'str', '*blk': 'bool', '*inc': 'bool',
+  'data': {'uri': 'str', '*blk': 'bool',
+           '*inc': { 'type': 'bool', 'features': [ 'deprecated' ] },
            '*detach': 'bool', '*resume': 'bool' } }
 
 ##
diff --git a/migration/migration.c b/migration/migration.c
index 1c6c81ad49..ac4897fe0d 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1601,6 +1601,12 @@ static bool migrate_prepare(MigrationState *s, bool blk, bool blk_inc,
 {
     Error *local_err = NULL;
 
+    if (blk_inc) {
+        warn_report("@inc/-i migrate option is deprecated, set the"
+                    "'block-incremental' migration parameter to 'true'"
+                    " instead.");
+    }
+
     if (resume) {
         if (s->state != MIGRATION_STATUS_POSTCOPY_PAUSED) {
             error_setg(errp, "Cannot resume if there is no "
-- 
2.41.0