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authorWen Congyang <wency@cn.fujitsu.com>2016-05-10 15:36:39 +0800
committerMax Reitz <mreitz@redhat.com>2016-05-12 15:33:23 +0200
commit7f82159769261419e0f3905cf758cfc4850bb26f (patch)
treefc021480a1c3bbf593cdc8b2a64fca6c4a8da929 /qapi
parent98292c61bc491b660c9fa2ccbdbb35131921ea65 (diff)
qmp: add monitor command to add/remove a child
The new QMP command name is x-blockdev-change. It's just for adding/removing quorum's child now, and doesn't support all kinds of children, all kinds of operations, nor all block drivers. So it is experimental now. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-id: 1462865799-19402-4-git-send-email-xiecl.fnst@cn.fujitsu.com Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'qapi')
-rw-r--r--qapi/block-core.json32
1 files changed, 32 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 1d09079cc1..98a20d22f4 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2556,3 +2556,35 @@
##
{ 'command': 'block-set-write-threshold',
'data': { 'node-name': 'str', 'write-threshold': 'uint64' } }
+
+##
+# @x-blockdev-change
+#
+# Dynamically reconfigure the block driver state graph. It can be used
+# to add, remove, insert or replace a graph node. Currently only the
+# Quorum driver implements this feature to add or remove its child. This
+# is useful to fix a broken quorum child.
+#
+# If @node is specified, it will be inserted under @parent. @child
+# may not be specified in this case. If both @parent and @child are
+# specified but @node is not, @child will be detached from @parent.
+#
+# @parent: the id or name of the parent node.
+#
+# @child: #optional the name of a child under the given parent node.
+#
+# @node: #optional the name of the node that will be added.
+#
+# Note: this command is experimental, and its API is not stable. It
+# does not support all kinds of operations, all kinds of children, nor
+# all block drivers.
+#
+# Warning: The data in a new quorum child MUST be consistent with that of
+# the rest of the array.
+#
+# Since: 2.7
+##
+{ 'command': 'x-blockdev-change',
+ 'data' : { 'parent': 'str',
+ '*child': 'str',
+ '*node': 'str' } }