update sources to v12.2.3

[ceph.git] / ceph / doc / rbd / rbd-mirroring.rst

diff --git a/ceph/doc/rbd/rbd-mirroring.rst b/ceph/doc/rbd/rbd-mirroring.rst
index 989f1fc3287d0c5ba25c620916bd47d467f16576..18dbb921d27fd0551e291143de9bb98ce8ed39d9 100644 (file)
--- a/ceph/doc/rbd/rbd-mirroring.rst
+++ b/ceph/doc/rbd/rbd-mirroring.rst
@@ -36,13 +36,6 @@ Ceph clusters.
    configuration file of the same name (e.g. /etc/ceph/remote.conf).  See the
    `ceph-conf`_ documentation for how to configure multiple clusters.
 
-.. note:: Images in a given pool will be mirrored to a pool with the same name
-   on the remote cluster. Images using a separate data-pool will use a data-pool
-   with the same name on the remote cluster. E.g., if an image being mirrored is
-   in the ``rbd`` pool on the local cluster and using a data-pool called
-   ``rbd-ec``, pools called ``rbd`` and ``rbd-ec`` must exist on the remote
-   cluster and will be used for mirroring the image.
-
 Enable Mirroring
 ----------------
 
@@ -109,6 +102,18 @@ For example::
         rbd --cluster local mirror pool peer remove image-pool 55672766-c02b-4729-8567-f13a66893445
         rbd --cluster remote mirror pool peer remove image-pool 60c0e299-b38f-4234-91f6-eed0a367be08
 
+Data Pools
+----------
+
+When creating images in the destination cluster, ``rbd-mirror`` selects a data
+pool as follows:
+
+#. If the destination cluster has a default data pool configured (with the
+   ``rbd_default_data_pool`` configuration option), it will be used.
+#. Otherwise, if the source image uses a separate data pool, and a pool with the
+   same name exists on the destination cluster, that pool will be used.
+#. If neither of the above is true, no data pool will be set.
+
 Image Configuration
 ===================