ceph: choose auth MDS for getxattr with the Xs caps

And for the 'Xs' caps for getxattr we will also choose the auth MDS,
because the MDS side code is buggy due to setxattr won't notify the
replica MDSes when the values changed and the replica MDS will return
the old values. Though we will fix it in MDS code, but this still
makes sense for old ceph.

URL: https://tracker.ceph.com/issues/55331
Signed-off-by: Xiubo Li <xiubli@redhat.com>

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 9d1add59bc17bf393084cad7e59a4be4967d2b85..09665b82330e368712117c78d6bff9763e78060d 100644 (file)
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2276,9 +2276,15 @@ int ceph_try_to_choose_auth_mds(struct inode *inode, int mask)
         *
         * This cost much when doing the Locker state transition and
         * usually will need to revoke caps from clients.
+        *
+        * And for the 'Xs' caps for getxattr we will also choose the
+        * auth MDS, because the MDS side code is buggy due to setxattr
+        * won't notify the replica MDSes when the values changed and
+        * the replica MDS will return the old values. Though we will
+        * fix it in MDS code, but this still makes sense for old ceph.
         */
        if (((mask & CEPH_CAP_ANY_SHARED) && (issued & CEPH_CAP_ANY_EXCL))
-           || (mask & CEPH_STAT_RSTAT))
+           || (mask & (CEPH_STAT_RSTAT | CEPH_STAT_CAP_XATTR)))
                return USE_AUTH_MDS;
        else
                return USE_ANY_MDS;