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[Qemu-block] [PATCH 4/4] qapi: new qmp command nbd-server-add-bitmap
From: |
Vladimir Sementsov-Ogievskiy |
Subject: |
[Qemu-block] [PATCH 4/4] qapi: new qmp command nbd-server-add-bitmap |
Date: |
Wed, 21 Mar 2018 15:19:40 +0300 |
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
qapi/block.json | 27 +++++++++++++++++++++++++++
blockdev-nbd.c | 23 +++++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/qapi/block.json b/qapi/block.json
index c694524002..4afbbcd7b7 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -269,6 +269,33 @@
'data': {'name': 'str', '*mode': 'NbdServerRemoveMode'} }
##
+# @nbd-server-add-bitmap:
+#
+# Export dirty bitmap through selected export. Bitmaps are searched for in
+# device attached to the export and in all its backings. Exported bitmap
+# is locked until NBD export is removed.
+#
+# @name: Export name.
+#
+# @bitmap: Bitmap name to search.
+#
+# @bitmap-export-name: How the bitmap will be seen by nbd clients
+# (default @bitmap)
+#
+#
+# Returns: error on one of the following conditions:
+# - the server is not running
+# - export is not found
+# - bitmap is not found
+# - bitmap is disabled
+# - bitmap is locked
+#
+# Since: 2.13
+##
+ { 'command': 'nbd-server-add-bitmap',
+ 'data': {'name': 'str', 'bitmap': 'str', '*bitmap-export-name': 'str'} }
+
+##
# @nbd-server-stop:
#
# Stop QEMU's embedded NBD server, and unregister all devices previously
diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index 65a84739ed..6b0c50732c 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -220,3 +220,26 @@ void qmp_nbd_server_stop(Error **errp)
nbd_server_free(nbd_server);
nbd_server = NULL;
}
+
+void qmp_nbd_server_add_bitmap(const char *name, const char *bitmap,
+ bool has_bitmap_export_name,
+ const char *bitmap_export_name,
+ Error **errp)
+{
+ NBDExport *exp;
+
+ if (!nbd_server) {
+ error_setg(errp, "NBD server not running");
+ return;
+ }
+
+ exp = nbd_export_find(name);
+ if (exp == NULL) {
+ error_setg(errp, "Export '%s' is not found", name);
+ return;
+ }
+
+ nbd_export_bitmap(exp, bitmap,
+ has_bitmap_export_name ? bitmap_export_name : bitmap,
+ errp);
+}
--
2.11.1
[Qemu-block] [PATCH 2/4] nbd/server: add nbd_meta_single_query helper, Vladimir Sementsov-Ogievskiy, 2018/03/21
[Qemu-block] [PATCH 1/4] nbd/server: refactor nbd_negotiate_meta_query for several namespaces, Vladimir Sementsov-Ogievskiy, 2018/03/21