LU-9341 lod: Add special O_APPEND striping

[fs/lustre-release.git] / lustre / mdd / mdd_object.c

diff --git a/lustre/mdd/mdd_object.c b/lustre/mdd/mdd_object.c
index e4357ec..364474c 100644 (file)
--- a/lustre/mdd/mdd_object.c
+++ b/lustre/mdd/mdd_object.c
@@ -2970,6 +2970,7 @@ void mdd_object_make_hint(const struct lu_env *env, struct mdd_object *parent,
                          struct dt_allocation_hint *hint)
 {
        struct dt_object *np = parent ?  mdd_object_child(parent) : NULL;
+       struct mdd_device *mdd = mdd_obj2mdd_dev(child);
        struct dt_object *nc = mdd_object_child(child);
 
        memset(hint, 0, sizeof(*hint));
@@ -2983,6 +2984,19 @@ void mdd_object_make_hint(const struct lu_env *env, struct mdd_object *parent,
        } else {
                hint->dah_eadata = NULL;
                hint->dah_eadata_len = 0;
+               if (spec->sp_cr_flags & MDS_OPEN_APPEND) {
+                       if (mdd->mdd_append_stripe_count != 0 ||
+                           mdd->mdd_append_pool[0])
+                               CDEBUG(D_INFO,
+                                      "using O_APPEND file striping\n");
+                       if (mdd->mdd_append_stripe_count)
+                               hint->dah_append_stripes =
+                                       mdd->mdd_append_stripe_count;
+                       if (mdd->mdd_append_pool[0])
+                               hint->dah_append_pool = mdd->mdd_append_pool;
+               } else {
+                       hint->dah_append_stripes = 0;
+               }
        }
 
        CDEBUG(D_INFO, DFID" eadata %p len %d\n", PFID(mdd_object_fid(child)),