LU-11376 lov: new foreign LOV format

[fs/lustre-release.git] / lustre / lfsck / lfsck_layout.c

diff --git a/lustre/lfsck/lfsck_layout.c b/lustre/lfsck/lfsck_layout.c
index 4f250e0..bc091f4 100644 (file)
--- a/lustre/lfsck/lfsck_layout.c
+++ b/lustre/lfsck/lfsck_layout.c
@@ -379,8 +379,29 @@ static int lfsck_layout_verify_header_v1v3(struct dt_object *obj,
        return 0;
 }
 
+static int lfsck_layout_verify_header_foreign(struct dt_object *obj,
+                                             struct lov_foreign_md *lfm,
+                                             size_t len)
+{
+       /* magic has been verified already */
+       __u32 value_len = le32_to_cpu(lfm->lfm_length);
+       /* type and flags are not checked for instance */
+
+       CDEBUG(D_INFO, "foreign LOV EA, magic %x, len %u, type %x, flags %x, for file "DFID"\n",
+              le32_to_cpu(lfm->lfm_magic), value_len,
+              le32_to_cpu(lfm->lfm_type), le32_to_cpu(lfm->lfm_flags),
+              PFID(lfsck_dto2fid(obj)));
+
+       if (len != value_len + offsetof(typeof(*lfm), lfm_value))
+               CDEBUG(D_LFSCK, "foreign LOV EA internal size %u does not match EA full size %zu for file "DFID"\n",
+                      value_len, len, PFID(lfsck_dto2fid(obj)));
+
+       /* nothing to repair */
+       return -ENODATA;
+}
+
 static int lfsck_layout_verify_header(struct dt_object *obj,
-                                     struct lov_mds_md_v1 *lmm)
+                                     struct lov_mds_md_v1 *lmm, size_t len)
 {
        int rc = 0;
 
@@ -430,6 +451,10 @@ static int lfsck_layout_verify_header(struct dt_object *obj,
                                        le32_to_cpu(lcme->lcme_offset)), start,
                                        comp_id);
                }
+       } else if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_FOREIGN) {
+               rc = lfsck_layout_verify_header_foreign(obj,
+                                               (struct lov_foreign_md *)lmm,
+                                               len);
        } else {
                rc = lfsck_layout_verify_header_v1v3(obj, lmm, 1, 0);
        }
@@ -468,7 +493,7 @@ again:
                goto again;
        }
 
-       rc1 = lfsck_layout_verify_header(obj, buf->lb_buf);
+       rc1 = lfsck_layout_verify_header(obj, buf->lb_buf, rc);
 
        return rc1 ? rc1 : rc;
 }
@@ -2881,7 +2906,7 @@ again:
        }
 
        lmm = buf->lb_buf;
-       rc1 = lfsck_layout_verify_header(parent, lmm);
+       rc1 = lfsck_layout_verify_header(parent, lmm, lovea_size);
 
        /* If the LOV EA crashed, the rebuild it. */
        if (rc1 == -EINVAL) {