LU-10499 pcc: use foreign layout for PCCRO on server side

[fs/lustre-release.git] / lustre / lod / lod_internal.h

diff --git a/lustre/lod/lod_internal.h b/lustre/lod/lod_internal.h
index e158a25..9c308d6 100644 (file)
--- a/lustre/lod/lod_internal.h
+++ b/lustre/lod/lod_internal.h
@@ -177,18 +177,34 @@ struct lod_layout_component {
        struct lu_extent          llc_extent;
        __u32                     llc_id;
        __u32                     llc_flags;
-       __u32                     llc_stripe_size;
-       __u32                     llc_pattern;
-       __u16                     llc_layout_gen;
-       __u16                     llc_stripe_offset;
-       __u16                     llc_stripe_count;
-       __u16                     llc_stripes_allocated;
+       __u32                     llc_magic;
        __u64                     llc_timestamp; /* snapshot time */
-       char                     *llc_pool;
-       /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
-       struct lu_tgt_pool        llc_ostlist;
-       struct dt_object        **llc_stripe;
-       __u32                    *llc_ost_indices;
+       union {
+               struct { /* plain layout V1/V3. */
+                       __u32                     llc_pattern;
+                       __u32                     llc_stripe_size;
+                       __u16                     llc_layout_gen;
+                       __u16                     llc_stripe_offset;
+                       __u16                     llc_stripe_count;
+                       __u16                     llc_stripes_allocated;
+                       char                     *llc_pool;
+                       /* ost list specified by LOV_USER_MAGIC_SPECIFIC lum */
+                       struct lu_tgt_pool        llc_ostlist;
+                       struct dt_object        **llc_stripe;
+                       __u32                    *llc_ost_indices;
+               };
+               struct { /* Foreign mirror layout component */
+                       __u32                     llc_length;
+                       __u32                     llc_type;
+                       __u32                     llc_foreign_flags;
+                       union {
+                               /* Basic HSM layout information */
+                               struct lov_hsm_base      llc_hsm;
+                               /* Other kinds of foreign types (i.e. DAOS) */
+                               char                    *llc_value;
+                       };
+               };
+       };
 };
 
 struct lod_default_striping {
@@ -218,7 +234,8 @@ enum layout_verify_flags {
 
 struct lod_mirror_entry {
        __u16   lme_stale:1,
-               lme_prefer:1;
+               lme_prefer:1,
+               lme_hsm:1;
        /* mirror id */
        __u16   lme_id;
        /* preference */
@@ -310,6 +327,12 @@ static inline bool lod_is_flr(const struct lod_object *lo)
        return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
 }
 
+static inline bool lod_is_hsm(const struct lod_layout_component *lod_comp)
+{
+       return lod_comp->llc_magic == LOV_MAGIC_FOREIGN &&
+              lov_hsm_type_supported(lod_comp->llc_type);
+}
+
 static inline bool lod_is_splitting(const struct lod_object *lo)
 {
        return lmv_hash_is_splitting(lo->ldo_dir_hash_type);
@@ -498,6 +521,9 @@ static inline bool lod_obj_is_striped(struct dt_object *dt)
                rc = false;
        } else {
                for (i = 0; i < lo->ldo_comp_cnt; i++) {
+                       if (lo->ldo_comp_entries[i].llc_magic ==
+                           LOV_MAGIC_FOREIGN)
+                               continue;
                        if (lo->ldo_comp_entries[i].llc_stripe == NULL)
                                continue;
                        LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
@@ -547,6 +573,8 @@ static inline void lod_layout_get_pool(struct lod_layout_component *entries,
        int i;
 
        for (i = 0; i < count; i++) {
+               if (entries[i].llc_magic == LOV_MAGIC_FOREIGN)
+                       continue;
                if (entries[i].llc_pool != NULL) {
                        strlcpy(pool, entries[i].llc_pool, len);
                        break;
@@ -668,6 +696,7 @@ void lod_free_def_comp_entries(struct lod_default_striping *lds);
 void lod_free_comp_entries(struct lod_object *lo);
 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
 int lod_fill_mirrors(struct lod_object *lo);
+int lod_init_comp_foreign(struct lod_layout_component *lod_comp, void *lmm);
 
 /* lod_pool.c */
 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);