LU-16135 lod: prohibit DoM pattern in plain layout

[fs/lustre-release.git] / lustre / lod / lod_lov.c

diff --git a/lustre/lod/lod_lov.c b/lustre/lod/lod_lov.c
index fe8c3d4..525c9d5 100644 (file)
--- a/lustre/lod/lod_lov.c
+++ b/lustre/lod/lod_lov.c
@@ -2012,6 +2012,12 @@ int lod_verify_striping(const struct lu_env *env, struct lod_device *d,
        case LOV_USER_MAGIC_V1:
        case LOV_USER_MAGIC_V3:
        case LOV_USER_MAGIC_SPECIFIC:
+               if (lov_pattern(le32_to_cpu(lum->lmm_pattern)) ==
+                   LOV_PATTERN_MDT) {
+                       /* DoM must use composite layout */
+                       CDEBUG(D_LAYOUT, "DoM without composite layout\n");
+                       RETURN(-EINVAL);
+               }
                RETURN(lod_verify_v1v3(d, buf, is_from_disk));
        case LOV_USER_MAGIC_COMP_V1:
        case LOV_USER_MAGIC_SEL: