LU-9008 pfl: dynamic layout modification with write/truncate

[fs/lustre-release.git] / lustre / lov / lov_pack.c

diff --git a/lustre/lov/lov_pack.c b/lustre/lov/lov_pack.c
index db005e5..f79827b 100644 (file)
--- a/lustre/lov/lov_pack.c
+++ b/lustre/lov/lov_pack.c
@@ -169,6 +169,9 @@ ssize_t lov_lsm_pack_v1v3(const struct lov_stripe_md *lsm, void *buf,
                lmm_objects = lmmv1->lmm_objects;
        }
 
+       if (lsm->lsm_is_released)
+               RETURN(lmm_size);
+
        for (i = 0; i < lsm->lsm_entries[0]->lsme_stripe_count; i++) {
                struct lov_oinfo *loi = lsm->lsm_entries[0]->lsme_oinfo[i];
 
@@ -213,11 +216,13 @@ ssize_t lov_lsm_pack(const struct lov_stripe_md *lsm, void *buf,
        for (entry = 0; entry < lsm->lsm_entry_count; entry++) {
                struct lov_stripe_md_entry *lsme;
                struct lov_mds_md *lmm;
+               __u16 stripecnt;
 
                lsme = lsm->lsm_entries[entry];
                lcme = &lcmv1->lcm_entries[entry];
 
                lcme->lcme_id = cpu_to_le32(lsme->lsme_id);
+               lcme->lcme_flags = cpu_to_le32(lsme->lsme_flags);
                lcme->lcme_extent.e_start =
                        cpu_to_le64(lsme->lsme_extent.e_start);
                lcme->lcme_extent.e_end =
@@ -244,7 +249,13 @@ ssize_t lov_lsm_pack(const struct lov_stripe_md *lsm, void *buf,
                                ((struct lov_mds_md_v1 *)lmm)->lmm_objects;
                }
 
-               for (i = 0; i < lsme->lsme_stripe_count; i++) {
+               if (lsme_inited(lsme) &&
+                   !(lsme->lsme_pattern & LOV_PATTERN_F_RELEASED))
+                       stripecnt = lsme->lsme_stripe_count;
+               else
+                       stripecnt = 0;
+
+               for (i = 0; i < stripecnt; i++) {
                        struct lov_oinfo *loi = lsme->lsme_oinfo[i];
 
                        ostid_cpu_to_le(&loi->loi_oi, &lmm_objects[i].l_ost_oi);
@@ -254,8 +265,7 @@ ssize_t lov_lsm_pack(const struct lov_stripe_md *lsm, void *buf,
                                        cpu_to_le32(loi->loi_ost_idx);
                }
 
-               size = lov_mds_md_size(lsme->lsme_stripe_count,
-                                      lsme->lsme_magic);
+               size = lov_mds_md_size(stripecnt, lsme->lsme_magic);
                lcme->lcme_size = cpu_to_le32(size);
                offset += size;
        } /* for each layout component */