DAOS-16591 mgmt, vos, common: Align scm/meta size

The scm and meta sizes for vos are now aligned-up to 16M for pools
using phase 2 allocator.

Signed-off-by: Sherin T George <sherin-t.george@hpe.com>

src/common/dav_v2/dav_iface.c

@@ -470,3 +470,9 @@ dav_class_register_v2(dav_obj_t *pop, struct dav_alloc_class_desc *p)
 
 	return 0;
 }
+
+DAV_FUNC_EXPORT size_t
+dav_obj_pgsz_v2()
+{
+	return ZONE_MAX_SIZE;
+}

src/common/dav_v2/dav_v2.h

@@ -313,4 +313,10 @@ dav_get_heap_mb_stats_v2(dav_obj_t *pop, uint32_t mb_id, struct dav_heap_mb_stat
 uint32_t
 dav_allot_mb_evictable_v2(dav_obj_t *pop, int flags);
 
+/*
+ * Return the page size for dav_v2.
+ */
+size_t
+dav_obj_pgsz_v2();
+
 #endif /* __DAOS_COMMON_DAV_V2_H */

src/common/mem.c

@@ -85,12 +85,14 @@ umempobj_settings_init(bool md_on_ssd)
 	return 0;
 }
 
-int umempobj_get_backend_type(void)
+int
+umempobj_get_backend_type(void)
 {
 	return daos_md_backend;
 }
 
-int umempobj_backend_type2class_id(int backend)
+int
+umempobj_backend_type2class_id(int backend)
 {
 	switch (backend) {
 	case DAOS_MD_PMEM:
@@ -108,6 +110,16 @@ int umempobj_backend_type2class_id(int backend)
 	}
 }
 
+size_t
+umempobj_pgsz(int backend)
+{
+	if (backend == DAOS_MD_BMEM_V2)
+		return dav_obj_pgsz_v2();
+	else
+		return (1UL << 12);
+
+}
+
 /** Define common slabs.  We can refine this for 2.4 pools but that is for next patch */
 static const int        slab_map[] = {
     0,          /* 32 bytes */

src/include/daos/mem.h

@@ -30,6 +30,9 @@ int umempobj_settings_init(bool md_on_ssd);
 /* convert backend type to umem class id */
 int umempobj_backend_type2class_id(int backend);
 
+/* get page size for the backend */
+size_t umempobj_pgsz(int backend);
+
 /* umem persistent object property flags */
 #define	UMEMPOBJ_ENABLE_STATS	0x1
 

src/include/daos_srv/vos.h

@@ -519,6 +519,16 @@ int
 vos_aggregate(daos_handle_t coh, daos_epoch_range_t *epr,
 	      int (*yield_func)(void *arg), void *yield_arg, uint32_t flags);
 
+/**
+ * Round up the scm and meta sizes to match the backend requirement.
+ * \param[in/out] scm_sz   SCM size that needs to be aligned up
+ * \param[in/out] meta_sz  META size that needs to be aligned up
+ *
+ * \return 0 on success, error otherwise.
+ */
+int
+vos_pool_roundup_size(size_t *scm_sz, size_t *meta_sz);
+
 /**
  * Discards changes in all epochs with the epoch range \a epr
  *

src/mgmt/srv_drpc.c

@@ -503,7 +503,7 @@ ds_mgmt_drpc_pool_create(Drpc__Call *drpc_req, Drpc__Response *drpc_resp)
 
 	scm_size = req->tier_bytes[DAOS_MEDIA_SCM];
 	if (req->mem_ratio)
-		scm_size *= req->mem_ratio;
+		scm_size *= (double)req->mem_ratio;
 
 	rc = ds_mgmt_create_pool(pool_uuid, req->sys, "pmem", targets, scm_size,
 				 req->tier_bytes[DAOS_MEDIA_NVME], prop, &svc, req->n_fault_domains,

src/mgmt/srv_target.c

@@ -1083,6 +1083,8 @@ ds_mgmt_hdlr_tgt_create(crt_rpc_t *tc_req)
 	pthread_t			 thread;
 	bool				 canceled_thread = false;
 	int				 rc = 0;
+	size_t				 tgt_scm_sz;
+	size_t				 tgt_meta_sz;
 
 	/** incoming request buffer */
 	tc_in = crt_req_get(tc_req);
@@ -1119,6 +1121,12 @@ ds_mgmt_hdlr_tgt_create(crt_rpc_t *tc_req)
 	D_DEBUG(DB_MGMT, DF_UUID": record inserted to dpt_creates_ht\n",
 		DP_UUID(tca.tca_ptrec->dptr_uuid));
 
+	tgt_scm_sz          = tc_in->tc_scm_size  / dss_tgt_nr;
+	tgt_meta_sz         = tc_in->tc_meta_size / dss_tgt_nr;
+	vos_pool_roundup_size(&tgt_scm_sz, &tgt_meta_sz);
+	tc_in->tc_scm_size  = tgt_scm_sz  * dss_tgt_nr;
+	tc_in->tc_meta_size = tgt_meta_sz * dss_tgt_nr;
+
 	tca.tca_scm_size  = tc_in->tc_scm_size;
 	tca.tca_nvme_size = tc_in->tc_nvme_size;
 	tca.tca_dx = dss_current_xstream();

src/vos/vos_pool.c

@@ -1272,6 +1272,26 @@ vos_pool_create_ex(const char *path, uuid_t uuid, daos_size_t scm_sz, daos_size_
 	return rc;
 }
 
+int
+vos_pool_roundup_size(daos_size_t *scm_sz, daos_size_t *meta_sz)
+{
+	int	backend;
+	size_t	alignsz;
+
+	backend = umempobj_get_backend_type();
+	if ((*scm_sz != *meta_sz) && (backend == DAOS_MD_BMEM))
+		backend = DAOS_MD_BMEM_V2;
+
+	/* Round up the size such that it is compatible with backend */
+	alignsz =  umempobj_pgsz(backend);
+
+	*scm_sz = D_ALIGNUP(*scm_sz, alignsz);
+	if (*meta_sz)
+		*meta_sz = D_ALIGNUP(*meta_sz, alignsz);
+
+	return 0;
+}
+
 int
 vos_pool_create(const char *path, uuid_t uuid, daos_size_t scm_sz, daos_size_t data_sz,
 		daos_size_t meta_sz, unsigned int flags, uint32_t version, daos_handle_t *poh)