bcachefs: Fix promoting to cache devices (durability = 0)
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
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66b095b008
commit
3e66981690
@ -377,6 +377,25 @@ void bch2_dev_stripe_increment(struct bch_fs *c, struct bch_dev *ca,
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#define BUCKET_MAY_ALLOC_PARTIAL (1 << 0)
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#define BUCKET_ALLOC_USE_DURABILITY (1 << 1)
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static void add_new_bucket(struct bch_fs *c,
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struct open_buckets *ptrs,
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struct bch_devs_mask *devs_may_alloc,
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unsigned *nr_effective,
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bool *have_cache,
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unsigned flags,
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struct open_bucket *ob)
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{
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unsigned durability =
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bch_dev_bkey_exists(c, ob->ptr.dev)->mi.durability;
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__clear_bit(ob->ptr.dev, devs_may_alloc->d);
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*nr_effective += (flags & BUCKET_ALLOC_USE_DURABILITY)
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? durability : 1;
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*have_cache |= !durability;
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ob_push(c, ptrs, ob);
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}
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static int bch2_bucket_alloc_set(struct bch_fs *c,
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struct open_buckets *ptrs,
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struct dev_stripe_state *stripe,
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@ -392,7 +411,7 @@ static int bch2_bucket_alloc_set(struct bch_fs *c,
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bch2_dev_alloc_list(c, stripe, devs_may_alloc);
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struct bch_dev *ca;
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bool alloc_failure = false;
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unsigned i, durability;
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unsigned i;
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BUG_ON(*nr_effective >= nr_replicas);
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@ -422,14 +441,8 @@ static int bch2_bucket_alloc_set(struct bch_fs *c,
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continue;
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}
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durability = (flags & BUCKET_ALLOC_USE_DURABILITY)
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? ca->mi.durability : 1;
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__clear_bit(ca->dev_idx, devs_may_alloc->d);
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*nr_effective += durability;
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*have_cache |= !durability;
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ob_push(c, ptrs, ob);
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add_new_bucket(c, ptrs, devs_may_alloc,
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nr_effective, have_cache, flags, ob);
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bch2_dev_stripe_increment(c, ca, stripe);
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@ -524,7 +537,8 @@ static void bucket_alloc_from_stripe(struct bch_fs *c,
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unsigned erasure_code,
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unsigned nr_replicas,
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unsigned *nr_effective,
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bool *have_cache)
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bool *have_cache,
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unsigned flags)
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{
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struct dev_alloc_list devs_sorted;
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struct ec_stripe_head *h;
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@ -564,11 +578,8 @@ got_bucket:
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ob->ec_idx = ec_idx;
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ob->ec = h->s;
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__clear_bit(ob->ptr.dev, devs_may_alloc->d);
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*nr_effective += ca->mi.durability;
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*have_cache |= !ca->mi.durability;
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ob_push(c, ptrs, ob);
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add_new_bucket(c, ptrs, devs_may_alloc,
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nr_effective, have_cache, flags, ob);
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atomic_inc(&h->s->pin);
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out_put_head:
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bch2_ec_stripe_head_put(h);
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@ -583,6 +594,7 @@ static void get_buckets_from_writepoint(struct bch_fs *c,
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unsigned nr_replicas,
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unsigned *nr_effective,
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bool *have_cache,
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unsigned flags,
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bool need_ec)
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{
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struct open_buckets ptrs_skip = { .nr = 0 };
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@ -597,11 +609,9 @@ static void get_buckets_from_writepoint(struct bch_fs *c,
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(ca->mi.durability ||
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(wp->type == BCH_DATA_USER && !*have_cache)) &&
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(ob->ec || !need_ec)) {
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__clear_bit(ob->ptr.dev, devs_may_alloc->d);
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*nr_effective += ca->mi.durability;
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*have_cache |= !ca->mi.durability;
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ob_push(c, ptrs, ob);
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add_new_bucket(c, ptrs, devs_may_alloc,
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nr_effective, have_cache,
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flags, ob);
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} else {
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ob_push(c, &ptrs_skip, ob);
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}
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@ -619,17 +629,15 @@ static int open_bucket_add_buckets(struct bch_fs *c,
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unsigned *nr_effective,
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bool *have_cache,
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enum alloc_reserve reserve,
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unsigned flags,
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struct closure *_cl)
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{
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struct bch_devs_mask devs;
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struct open_bucket *ob;
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struct closure *cl = NULL;
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unsigned i, flags = BUCKET_ALLOC_USE_DURABILITY;
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unsigned i;
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int ret;
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if (wp->type == BCH_DATA_USER)
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flags |= BUCKET_MAY_ALLOC_PARTIAL;
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rcu_read_lock();
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devs = target_rw_devs(c, wp->type, target);
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rcu_read_unlock();
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@ -644,21 +652,21 @@ static int open_bucket_add_buckets(struct bch_fs *c,
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if (erasure_code) {
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get_buckets_from_writepoint(c, ptrs, wp, &devs,
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nr_replicas, nr_effective,
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have_cache, true);
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have_cache, flags, true);
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if (*nr_effective >= nr_replicas)
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return 0;
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bucket_alloc_from_stripe(c, ptrs, wp, &devs,
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target, erasure_code,
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nr_replicas, nr_effective,
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have_cache);
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have_cache, flags);
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if (*nr_effective >= nr_replicas)
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return 0;
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}
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get_buckets_from_writepoint(c, ptrs, wp, &devs,
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nr_replicas, nr_effective,
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have_cache, false);
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have_cache, flags, false);
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if (*nr_effective >= nr_replicas)
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return 0;
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@ -863,9 +871,13 @@ struct write_point *bch2_alloc_sectors_start(struct bch_fs *c,
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struct open_bucket *ob;
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struct open_buckets ptrs;
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unsigned nr_effective, write_points_nr;
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unsigned ob_flags = 0;
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bool have_cache;
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int ret, i;
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if (!(flags & BCH_WRITE_ONLY_SPECIFIED_DEVS))
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ob_flags |= BUCKET_ALLOC_USE_DURABILITY;
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BUG_ON(!nr_replicas || !nr_replicas_required);
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retry:
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ptrs.nr = 0;
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@ -875,6 +887,9 @@ retry:
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wp = writepoint_find(c, write_point.v);
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if (wp->type == BCH_DATA_USER)
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ob_flags |= BUCKET_MAY_ALLOC_PARTIAL;
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/* metadata may not allocate on cache devices: */
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if (wp->type != BCH_DATA_USER)
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have_cache = true;
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@ -883,19 +898,22 @@ retry:
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ret = open_bucket_add_buckets(c, &ptrs, wp, devs_have,
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target, erasure_code,
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nr_replicas, &nr_effective,
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&have_cache, reserve, cl);
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&have_cache, reserve,
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ob_flags, cl);
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} else {
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ret = open_bucket_add_buckets(c, &ptrs, wp, devs_have,
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target, erasure_code,
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nr_replicas, &nr_effective,
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&have_cache, reserve, NULL);
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&have_cache, reserve,
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ob_flags, NULL);
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if (!ret)
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goto alloc_done;
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ret = open_bucket_add_buckets(c, &ptrs, wp, devs_have,
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0, erasure_code,
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nr_replicas, &nr_effective,
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&have_cache, reserve, cl);
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&have_cache, reserve,
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ob_flags, cl);
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}
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alloc_done:
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BUG_ON(!ret && nr_effective < nr_replicas);
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@ -1013,23 +1013,23 @@ static inline bool should_promote(struct bch_fs *c, struct bkey_s_c k,
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struct bch_io_opts opts,
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unsigned flags)
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{
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if (!opts.promote_target)
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if (!bkey_extent_is_data(k.k))
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return false;
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if (!(flags & BCH_READ_MAY_PROMOTE))
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return false;
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if (percpu_ref_is_dying(&c->writes))
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if (!opts.promote_target)
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return false;
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if (!bkey_extent_is_data(k.k))
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if (bch2_extent_has_target(c, bkey_s_c_to_extent(k),
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opts.promote_target))
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return false;
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if (bch2_extent_has_target(c, bkey_s_c_to_extent(k), opts.promote_target))
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return false;
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if (bch2_target_congested(c, opts.promote_target))
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if (bch2_target_congested(c, opts.promote_target)) {
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/* XXX trace this */
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return false;
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}
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if (rhashtable_lookup_fast(&c->promote_table, &pos,
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bch_promote_params))
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