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DAOS-16569 vos: fix few defects #15175

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merged 3 commits into from
Sep 25, 2024
Merged

DAOS-16569 vos: fix few defects #15175

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1e13d3f
DAOS-16569 vos: fix few defects
NiuYawei Sep 24, 2024
8717180
DAOS-16569 vos: non-NULL check for metrics
NiuYawei Sep 24, 2024
6488828
DAOS-16569 vos: avoid find in emtpy daos array
NiuYawei Sep 24, 2024
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2 changes: 1 addition & 1 deletion src/vos/vos_gc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -747,7 +747,7 @@ gc_reclaim_pool(struct vos_pool *pool, int *credits, bool *empty_ret)
rg.cr_off = umem_get_mb_base_offset(vos_pool2umm(pool), bkt);
rg.cr_size = vos_pool2store(pool)->cache->ca_page_sz;

rc = vos_cache_pin(vos_pool2store(pool), &rg, 1, false, &pin_hdl);
rc = vos_cache_pin(pool, &rg, 1, false, &pin_hdl);
if (rc) {
DL_ERROR(rc, "Failed to pin bucket %u.", bkt);
goto tx_error;
Expand Down
32 changes: 27 additions & 5 deletions src/vos/vos_internal.h
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Expand Up @@ -1918,6 +1918,23 @@ vos_obj_reserve(struct umem_instance *umm, struct vos_object *obj,
}

/* vos_obj_cache.c */
static inline struct dtx_handle *
clear_cur_dth(struct vos_pool *pool)
{
struct dtx_handle *dth;

dth = vos_dth_get(pool->vp_sysdb);
vos_dth_set(NULL, pool->vp_sysdb);

return dth;
}

static inline void
restore_cur_dth(struct vos_pool *pool, struct dtx_handle *dth)
{
vos_dth_set(dth, pool->vp_sysdb);
}

static inline struct vos_cache_metrics *
store2cache_metrics(struct umem_store *store)
{
Expand All @@ -1935,9 +1952,9 @@ update_page_stats(struct umem_store *store)
if (vcm == NULL)
return;

d_tm_set_counter(vcm->vcm_pg_ne, cache->ca_pgs_stats[UMEM_PG_STATS_NONEVICTABLE]);
d_tm_set_counter(vcm->vcm_pg_pinned, cache->ca_pgs_stats[UMEM_PG_STATS_PINNED]);
d_tm_set_counter(vcm->vcm_pg_free, cache->ca_pgs_stats[UMEM_PG_STATS_FREE]);
d_tm_set_gauge(vcm->vcm_pg_ne, cache->ca_pgs_stats[UMEM_PG_STATS_NONEVICTABLE]);
d_tm_set_gauge(vcm->vcm_pg_pinned, cache->ca_pgs_stats[UMEM_PG_STATS_PINNED]);
d_tm_set_gauge(vcm->vcm_pg_free, cache->ca_pgs_stats[UMEM_PG_STATS_FREE]);
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[suggestion] Different from the counter, refreshing the gauge may cause more overhead. So it may be better to do that only when related stats changed.


d_tm_set_counter(vcm->vcm_pg_hit, cache->ca_cache_stats[UMEM_CACHE_STATS_HIT]);
d_tm_set_counter(vcm->vcm_pg_miss, cache->ca_cache_stats[UMEM_CACHE_STATS_MISS]);
Expand All @@ -1947,12 +1964,17 @@ update_page_stats(struct umem_store *store)
}

static inline int
vos_cache_pin(struct umem_store *store, struct umem_cache_range *ranges, int range_nr,
vos_cache_pin(struct vos_pool *pool, struct umem_cache_range *ranges, int range_nr,
bool for_sys, struct umem_pin_handle **pin_handle)
{
int rc;
struct umem_store *store = vos_pool2store(pool);
struct dtx_handle *cur_dth;
int rc;

cur_dth = clear_cur_dth(pool);
rc = umem_cache_pin(store, ranges, range_nr, for_sys, pin_handle);
restore_cur_dth(pool, cur_dth);

update_page_stats(store);

return rc;
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2 changes: 1 addition & 1 deletion src/vos/vos_io.c
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Expand Up @@ -2100,7 +2100,7 @@ reserve_space(struct vos_io_context *ioc, uint16_t media, daos_size_t size,
if (media == DAOS_MEDIA_SCM) {
umem_off_t umoff;

umoff = vos_reserve_scm(ioc->ic_cont, ioc->ic_rsrvd_scm, size, ioc->ic_obj);
umoff = vos_reserve_scm(ioc->ic_cont, ioc->ic_rsrvd_scm, size, ioc->ic_pinned_obj);
if (!UMOFF_IS_NULL(umoff)) {
ioc->ic_umoffs[ioc->ic_umoffs_cnt] = umoff;
ioc->ic_umoffs_cnt++;
Expand Down
15 changes: 13 additions & 2 deletions src/vos/vos_obj_cache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -287,20 +287,27 @@ vos_obj_unpin(struct vos_object *obj)
static void
obj_allot_bkt(struct vos_pool *pool, struct vos_object *obj)
{
struct dtx_handle *cur_dth;

D_ASSERT(umem_tx_none(vos_pool2umm(pool)));

if (obj->obj_bkt_alloting) {
cur_dth = clear_cur_dth(pool);

ABT_mutex_lock(obj->obj_mutex);
ABT_cond_wait(obj->obj_wait_alloting, obj->obj_mutex);
ABT_mutex_unlock(obj->obj_mutex);

D_ASSERT(obj->obj_bkt_alloted == 1);
restore_cur_dth(pool, cur_dth);
return;
}
obj->obj_bkt_alloting = 1;

if (!obj->obj_df) {
cur_dth = clear_cur_dth(pool);
obj->obj_bkt_ids[0] = umem_allot_mb_evictable(vos_pool2umm(pool), 0);
restore_cur_dth(pool, cur_dth);
} else {
struct vos_obj_p2_df *p2 = (struct vos_obj_p2_df *)obj->obj_df;

Expand All @@ -319,6 +326,7 @@ static int
obj_pin_bkt(struct vos_pool *pool, struct vos_object *obj)
{
struct umem_store *store = vos_pool2store(pool);
struct dtx_handle *cur_dth;
struct umem_cache_range rg;
int rc;

Expand All @@ -329,10 +337,13 @@ obj_pin_bkt(struct vos_pool *pool, struct vos_object *obj)
}

if (obj->obj_bkt_loading) {
cur_dth = clear_cur_dth(pool);

ABT_mutex_lock(obj->obj_mutex);
ABT_cond_wait(obj->obj_wait_loading, obj->obj_mutex);
ABT_mutex_unlock(obj->obj_mutex);

restore_cur_dth(pool, cur_dth);
/* The loader failed on vos_cache_pin() */
if (obj->obj_pin_hdl == NULL) {
D_ERROR("Object:"DF_UOID" isn't pinned.\n", DP_UOID(obj->obj_id));
Expand All @@ -352,7 +363,7 @@ obj_pin_bkt(struct vos_pool *pool, struct vos_object *obj)
rg.cr_off = umem_get_mb_base_offset(vos_pool2umm(pool), obj->obj_bkt_ids[0]);
rg.cr_size = store->cache->ca_page_sz;

rc = vos_cache_pin(store, &rg, 1, false, &obj->obj_pin_hdl);
rc = vos_cache_pin(pool, &rg, 1, false, &obj->obj_pin_hdl);
if (rc)
DL_ERROR(rc, "Failed to pin object:"DF_UOID".", DP_UOID(obj->obj_id));

Expand Down Expand Up @@ -890,7 +901,7 @@ vos_bkt_array_pin(struct vos_pool *pool, struct vos_bkt_array *bkts,
ranges[i].cr_size = vos_pool2store(pool)->cache->ca_page_sz;
}

rc = vos_cache_pin(vos_pool2store(pool), ranges, bkts->vba_cnt, false, pin_hdl);
rc = vos_cache_pin(pool, ranges, bkts->vba_cnt, false, pin_hdl);
if (rc)
DL_ERROR(rc, "Failed to pin %u ranges.", bkts->vba_cnt);

Expand Down
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