From: 胡玮文 Date: Sun, 19 Sep 2021 13:12:44 +0000 (+0800) Subject: doc: clarify MDS failed state X-Git-Tag: v17.1.0~837^2 X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F43219%2Fhead;p=ceph.git doc: clarify MDS failed state Since 58eaa237b0a1, an MDS is only promoted if it is compatible with the file system compat. The users may see persistent failed state even they have enough standby daemons. Signed-off-by: 胡玮文 --- diff --git a/doc/cephfs/mds-states.rst b/doc/cephfs/mds-states.rst index 7598f49487ca0..b221396d6b69b 100644 --- a/doc/cephfs/mds-states.rst +++ b/doc/cephfs/mds-states.rst @@ -154,7 +154,10 @@ No MDS actually holds this state. Instead, it is applied to the rank in the file failed 0 ... -Rank 0 is part of the failed set. +Rank 0 is part of the failed set and is pending to be taken over by a standby +MDS. If this state persists, it indicates no suitable MDS daemons found to be +assigned to this rank. This may be caused by not enough standby daemons, or all +standby daemons have incompatible campat (see also :ref:`upgrade-mds-cluster`). :: diff --git a/doc/cephfs/upgrading.rst b/doc/cephfs/upgrading.rst index 2dc29e1298bb1..c06e3e8e0ca2f 100644 --- a/doc/cephfs/upgrading.rst +++ b/doc/cephfs/upgrading.rst @@ -1,3 +1,5 @@ +.. _upgrade-mds-cluster: + Upgrading the MDS Cluster =========================