LU-3864 mdt: return st_blocks=1 for released files

[fs/lustre-release.git] / lustre / mdt / mdt_handler.c

diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index 3ac51d7..dc960e5 100644 (file)
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -414,7 +414,13 @@ void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
        } else if ((ma->ma_valid & MA_LOV) && ma->ma_lmm != NULL &&
                   ma->ma_lmm->lmm_pattern & LOV_PATTERN_F_RELEASED) {
                /* A released file stores its size on MDS. */
-               b->blocks = 0;
+               /* But return 1 block for released file, unless tools like tar
+                * will consider it fully sparse. (LU-3864)
+                */
+               if (unlikely(b->size == 0))
+                       b->blocks = 0;
+               else
+                       b->blocks = 1;
                b->valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
        }