doc: add setting/unsetting `mon_mds_skip_sanity` config for manual ceph-mds upgrade

Signed-off-by: Venky Shankar <vshankar@redhat.com>

diff --git a/doc/releases/pacific.rst b/doc/releases/pacific.rst
index 5394545476fe490143300ac6a2bf19e8d189aae8..d33ea3298634ad8f72c1b058e445b341486c8e83 100644 (file)
--- a/doc/releases/pacific.rst
+++ b/doc/releases/pacific.rst
@@ -1092,9 +1092,13 @@ Upgrading non-cephadm clusters
 
 #. Upgrade all CephFS MDS daemons. For each CephFS file system,
 
-   #. Disable standby_replay:
+   #. Disable FSMap sanity checks::
 
-   # ceph fs set <fs_name> allow_standby_replay false
+        # ceph config set mon mon_mds_skip_sanity true
+
+   #. Disable standby_replay::
+
+        # ceph fs set <fs_name> allow_standby_replay false
 
    #. Reduce the number of ranks to 1.  (Make note of the original
       number of MDS daemons first if you plan to restore it later.)::
@@ -1128,6 +1132,10 @@ Upgrading non-cephadm clusters
 
        # ceph fs set <fs_name> max_mds <original_max_mds>
 
+   #. Remove `mon_mds_skip_sanity` setting::
+
+        # ceph config rm mon mon_mds_skip_sanity
+
 #. Upgrade all radosgw daemons by upgrading packages and restarting
    daemons on all hosts::