LU-13417 mdd: set default LMV on ROOT

[fs/lustre-release.git] / lustre / mdc / mdc_request.c

diff --git a/lustre/mdc/mdc_request.c b/lustre/mdc/mdc_request.c
index 8942e68..3df0523 100644 (file)
--- a/lustre/mdc/mdc_request.c
+++ b/lustre/mdc/mdc_request.c
@@ -550,6 +550,13 @@ static int mdc_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
                        GOTO(out, rc = -EPROTO);
                }
 
+               if (md_exp->exp_obd->obd_type->typ_lu == &mdc_device_type) {
+                       CERROR("%s: no LMV, upgrading from old version?\n",
+                              md_exp->exp_obd->obd_name);
+
+                       GOTO(out_acl, rc = 0);
+               }
+
                if (md->body->mbo_valid & OBD_MD_MEA) {
                        lmv_size = md->body->mbo_eadatasize;
                        if (lmv_size == 0) {
@@ -606,6 +613,7 @@ static int mdc_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
        }
        rc = 0;
 
+out_acl:
        if (md->body->mbo_valid & OBD_MD_FLACL) {
                /* for ACL, it's possible that FLACL is set but aclsize is zero.
                 * only when aclsize != 0 there's an actual segment for ACL