From 19372b8492a75ea8423cb9826f4ddaec0a947554 Mon Sep 17 00:00:00 2001 From: Patrick Donnelly Date: Fri, 5 Apr 2019 14:11:11 -0700 Subject: [PATCH] doc: add doc for blacklisting older CephFS clients Fixes: http://tracker.ceph.com/issues/39130 Signed-off-by: Patrick Donnelly --- doc/cephfs/administration.rst | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/doc/cephfs/administration.rst b/doc/cephfs/administration.rst index b7aa37cec6b..a1ae02d6610 100644 --- a/doc/cephfs/administration.rst +++ b/doc/cephfs/administration.rst @@ -213,6 +213,28 @@ does not change a MDS; it manipulates the file system rank which has been marked damaged. +Minimum Client Version +---------------------- + +It is sometimes desirable to set the minimum version of Ceph that a client must be +running to connect to a CephFS cluster. Older clients may sometimes still be +running with bugs that can cause locking issues between clients (due to +capability release). CephFS provides a mechanism to set the minimum +client version: + +:: + + fs set min_compat_client + +For example, to only allow Nautilus clients, use: + +:: + + fs set cephfs min_compat_client nautilus + +Clients running an older version will be automatically evicted. + + Global settings --------------- -- 2.39.5