LU-1187 mdt: Only create remote dir on MDT0

[fs/lustre-release.git] / lustre / mdt / mdt_reint.c

diff --git a/lustre/mdt/mdt_reint.c b/lustre/mdt/mdt_reint.c
index e342b20..4d7aebf 100644 (file)
--- a/lustre/mdt/mdt_reint.c
+++ b/lustre/mdt/mdt_reint.c
@@ -306,6 +306,19 @@ static int mdt_md_create(struct mdt_thread_info *info)
         if (likely(!IS_ERR(child))) {
                 struct md_object *next = mdt_object_child(parent);
 
+               if (mdt_object_exists(child) < 0) {
+                       struct seq_server_site *ss;
+
+                       ss = mdt_seq_site(mdt);
+                       if (ss->ss_node_id != 0 &&
+                           mdt->mdt_enable_remote_dir == 0) {
+                               CERROR("%s: remote dir is only permitted on"
+                                      " MDT0 or set_param"
+                                      " mdt.*.enable_remote_dir=1\n",
+                                      mdt2obd_dev(mdt)->obd_name);
+                               GOTO(out_put_child, rc = -EPERM);
+                       }
+               }
                 ma->ma_need = MA_INODE;
                 ma->ma_valid = 0;
                 /* capa for cross-ref will be stored here */