LU-12036 ofd: add "no_precreate" mount option

[fs/lustre-release.git] / lustre / ofd / ofd_dev.c

diff --git a/lustre/ofd/ofd_dev.c b/lustre/ofd/ofd_dev.c
index dcfeb85..a48efb0 100644 (file)
--- a/lustre/ofd/ofd_dev.c
+++ b/lustre/ofd/ofd_dev.c
@@ -180,9 +180,12 @@ static int ofd_stack_init(const struct lu_env *env,
        }
 
        lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
-       if (lmd != NULL && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
+       if (lmd && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
                m->ofd_skip_lfsck = 1;
 
+       if (lmd && lmd->lmd_flags & LMD_FLG_NO_PRECREATE)
+               m->ofd_no_precreate = 1;
+
        /* find bottom osd */
        OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
        if (osdname == NULL)
@@ -1488,6 +1491,9 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
        if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
                RETURN(-EROFS);
 
+       if (ofd->ofd_no_precreate)
+               return -EPERM;
+
        repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
        if (repbody == NULL)
                RETURN(-ENOMEM);