#include "bcachefs.h"
#include "alloc_foreground.h"
+#include "backpointers.h"
#include "bkey_buf.h"
#include "bset.h"
#include "btree_gc.h"
/* Stripes btree keys: */
-const char *bch2_stripe_invalid(const struct bch_fs *c, struct bkey_s_c k)
+int bch2_stripe_invalid(const struct bch_fs *c, struct bkey_s_c k,
+ int rw, struct printbuf *err)
{
const struct bch_stripe *s = bkey_s_c_to_stripe(k).v;
- if (!bkey_cmp(k.k->p, POS_MIN))
- return "stripe at pos 0";
+ if (!bkey_cmp(k.k->p, POS_MIN)) {
+ prt_printf(err, "stripe at POS_MIN");
+ return -EINVAL;
+ }
- if (k.k->p.inode)
- return "invalid stripe key";
+ if (k.k->p.inode) {
+ prt_printf(err, "nonzero inode field");
+ return -EINVAL;
+ }
- if (bkey_val_bytes(k.k) < sizeof(*s))
- return "incorrect value size";
+ if (bkey_val_bytes(k.k) < sizeof(*s)) {
+ prt_printf(err, "incorrect value size (%zu < %zu)",
+ bkey_val_bytes(k.k), sizeof(*s));
+ return -EINVAL;
+ }
- if (bkey_val_bytes(k.k) < sizeof(*s) ||
- bkey_val_u64s(k.k) < stripe_val_u64s(s))
- return "incorrect value size";
+ if (bkey_val_u64s(k.k) < stripe_val_u64s(s)) {
+ prt_printf(err, "incorrect value size (%zu < %u)",
+ bkey_val_u64s(k.k), stripe_val_u64s(s));
+ return -EINVAL;
+ }
- return bch2_bkey_ptrs_invalid(c, k);
+ return bch2_bkey_ptrs_invalid(c, k, rw, err);
}
void bch2_stripe_to_text(struct printbuf *out, struct bch_fs *c,
const struct bch_stripe *s = bkey_s_c_to_stripe(k).v;
unsigned i;
- pr_buf(out, "algo %u sectors %u blocks %u:%u csum %u gran %u",
+ prt_printf(out, "algo %u sectors %u blocks %u:%u csum %u gran %u",
s->algorithm,
le16_to_cpu(s->sectors),
s->nr_blocks - s->nr_redundant,
1U << s->csum_granularity_bits);
for (i = 0; i < s->nr_blocks; i++)
- pr_buf(out, " %u:%llu:%u", s->ptrs[i].dev,
+ prt_printf(out, " %u:%llu:%u", s->ptrs[i].dev,
(u64) s->ptrs[i].offset,
stripe_blockcount_get(s, i));
}
struct bch_csum got = ec_block_checksum(buf, i, offset);
if (bch2_crc_cmp(want, got)) {
- char buf2[200];
+ struct printbuf buf2 = PRINTBUF;
- bch2_bkey_val_to_text(&PBUF(buf2), c, bkey_i_to_s_c(&buf->key.k_i));
+ bch2_bkey_val_to_text(&buf2, c, bkey_i_to_s_c(&buf->key.k_i));
bch_err_ratelimited(c,
"stripe checksum error for %ps at %u:%u: csum type %u, expected %llx got %llx\n%s",
(void *) _RET_IP_, i, j, v->csum_type,
- want.lo, got.lo, buf2);
+ want.lo, got.lo, buf2.buf);
+ printbuf_exit(&buf2);
clear_bit(i, buf->valid);
break;
}
nr_iovecs << PAGE_SHIFT);
struct ec_bio *ec_bio;
- ec_bio = container_of(bio_alloc_bioset(GFP_KERNEL, nr_iovecs,
+ ec_bio = container_of(bio_alloc_bioset(ca->disk_sb.bdev,
+ nr_iovecs,
+ rw,
+ GFP_KERNEL,
&c->ec_bioset),
struct ec_bio, bio);
ec_bio->buf = buf;
ec_bio->idx = idx;
- bio_set_dev(&ec_bio->bio, ca->disk_sb.bdev);
- bio_set_op_attrs(&ec_bio->bio, rw, 0);
-
ec_bio->bio.bi_iter.bi_sector = ptr->offset + buf->offset + (offset >> 9);
ec_bio->bio.bi_end_io = ec_block_endio;
ec_bio->bio.bi_private = cl;
struct btree_iter *iter)
{
size_t idx = iter->pos.offset;
- int ret = 0;
if (!__ec_stripe_mem_alloc(trans->c, idx, GFP_NOWAIT|__GFP_NOWARN))
- return ret;
+ return 0;
bch2_trans_unlock(trans);
- ret = -EINTR;
- if (!__ec_stripe_mem_alloc(trans->c, idx, GFP_KERNEL))
- return ret;
-
- return -ENOMEM;
+ return __ec_stripe_mem_alloc(trans->c, idx, GFP_KERNEL) ?:
+ bch2_trans_relock(trans);
}
static ssize_t stripe_idx_to_delete(struct bch_fs *c)
struct bpos start_pos = bpos_max(min_pos, POS(0, c->ec_stripe_hint));
int ret;
- for_each_btree_key(trans, iter, BTREE_ID_stripes, start_pos,
+ for_each_btree_key_norestart(trans, iter, BTREE_ID_stripes, start_pos,
BTREE_ITER_SLOTS|BTREE_ITER_INTENT, k, ret) {
if (bkey_cmp(k.k->p, POS(0, U32_MAX)) > 0) {
if (start_pos.offset) {
continue;
}
- ret = -ENOSPC;
+ ret = -BCH_ERR_ENOSPC_stripe_create;
break;
}
if (bkey_deleted(k.k))
- goto found_slot;
+ break;
}
- goto err;
-found_slot:
- start_pos = iter.pos;
+ c->ec_stripe_hint = iter.pos.offset;
+
+ if (ret)
+ goto err;
ret = ec_stripe_mem_alloc(trans, &iter);
if (ret)
stripe->k.p = iter.pos;
ret = bch2_trans_update(trans, &iter, &stripe->k_i, 0);
-
- c->ec_stripe_hint = start_pos.offset;
err:
bch2_trans_iter_exit(trans, &iter);
};
}
-static int ec_stripe_update_ptrs(struct bch_fs *c,
- struct ec_stripe_buf *s,
- struct bkey *pos)
+static int ec_stripe_update_extent(struct btree_trans *trans,
+ struct btree_iter *iter,
+ struct bkey_s_c k,
+ struct ec_stripe_buf *s)
{
- struct btree_trans trans;
- struct btree_iter iter;
- struct bkey_s_c k;
- struct bkey_s_extent e;
- struct bkey_buf sk;
- struct bpos next_pos;
- int ret = 0, dev, block;
+ const struct bch_extent_ptr *ptr_c;
+ struct bch_extent_ptr *ptr, *ec_ptr = NULL;
+ struct bkey_i *n;
+ int ret, dev, block;
+
+ if (extent_has_stripe_ptr(k, s->key.k.p.offset))
+ return 0;
+
+ ptr_c = bkey_matches_stripe(&s->key.v, k, &block);
+ /*
+ * It doesn't generally make sense to erasure code cached ptrs:
+ * XXX: should we be incrementing a counter?
+ */
+ if (!ptr_c || ptr_c->cached)
+ return 0;
+
+ dev = s->key.v.ptrs[block].dev;
+
+ n = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
+ ret = PTR_ERR_OR_ZERO(n);
+ if (ret)
+ return ret;
+
+ bkey_reassemble(n, k);
- bch2_bkey_buf_init(&sk);
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+ bch2_bkey_drop_ptrs(bkey_i_to_s(n), ptr, ptr->dev != dev);
+ ec_ptr = (void *) bch2_bkey_has_device(bkey_i_to_s_c(n), dev);
+ BUG_ON(!ec_ptr);
- /* XXX this doesn't support the reflink btree */
+ extent_stripe_ptr_add(bkey_i_to_s_extent(n), s, ec_ptr, block);
- bch2_trans_iter_init(&trans, &iter, BTREE_ID_extents,
- bkey_start_pos(pos),
- BTREE_ITER_INTENT);
+ return bch2_trans_update(trans, iter, n, 0);
+}
+
+static int ec_stripe_update_bucket(struct btree_trans *trans, struct ec_stripe_buf *s,
+ unsigned block)
+{
+ struct bch_fs *c = trans->c;
+ struct bch_extent_ptr bucket = s->key.v.ptrs[block];
+ struct bpos bucket_pos = PTR_BUCKET_POS(c, &bucket);
+ struct bch_backpointer bp;
+ struct btree_iter iter;
+ struct bkey_s_c k;
+ u64 bp_offset = 0;
+ int ret = 0;
retry:
- while (bch2_trans_begin(&trans),
- (k = bch2_btree_iter_peek(&iter)).k &&
- !(ret = bkey_err(k)) &&
- bkey_cmp(bkey_start_pos(k.k), pos->p) < 0) {
- const struct bch_extent_ptr *ptr_c;
- struct bch_extent_ptr *ptr, *ec_ptr = NULL;
-
- if (extent_has_stripe_ptr(k, s->key.k.p.offset)) {
- bch2_btree_iter_advance(&iter);
- continue;
+ while (1) {
+ bch2_trans_begin(trans);
+
+ ret = bch2_get_next_backpointer(trans, bucket_pos, bucket.gen,
+ &bp_offset, &bp,
+ BTREE_ITER_CACHED);
+ if (ret)
+ break;
+ if (bp_offset == U64_MAX)
+ break;
+
+ if (bch2_fs_inconsistent_on(bp.level, c, "found btree node in erasure coded bucket!?")) {
+ ret = -EIO;
+ break;
}
- ptr_c = bkey_matches_stripe(&s->key.v, k, &block);
- /*
- * It doesn't generally make sense to erasure code cached ptrs:
- * XXX: should we be incrementing a counter?
- */
- if (!ptr_c || ptr_c->cached) {
- bch2_btree_iter_advance(&iter);
+ k = bch2_backpointer_get_key(trans, &iter, bucket_pos, bp_offset, bp);
+ ret = bkey_err(k);
+ if (ret)
+ break;
+ if (!k.k)
continue;
- }
- dev = s->key.v.ptrs[block].dev;
+ ret = ec_stripe_update_extent(trans, &iter, k, s);
+ bch2_trans_iter_exit(trans, &iter);
+ if (ret)
+ break;
- bch2_bkey_buf_reassemble(&sk, c, k);
- e = bkey_i_to_s_extent(sk.k);
+ bp_offset++;
+ }
- bch2_bkey_drop_ptrs(e.s, ptr, ptr->dev != dev);
- ec_ptr = (void *) bch2_bkey_has_device(e.s_c, dev);
- BUG_ON(!ec_ptr);
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ goto retry;
- extent_stripe_ptr_add(e, s, ec_ptr, block);
+ return ret;
+}
- bch2_btree_iter_set_pos(&iter, bkey_start_pos(&sk.k->k));
- next_pos = sk.k->k.p;
+static int ec_stripe_update_extents(struct bch_fs *c, struct ec_stripe_buf *s)
+{
+ struct btree_trans trans;
+ struct bch_stripe *v = &s->key.v;
+ unsigned i, nr_data = v->nr_blocks - v->nr_redundant;
+ int ret = 0;
- ret = bch2_btree_iter_traverse(&iter) ?:
- bch2_trans_update(&trans, &iter, sk.k, 0) ?:
- bch2_trans_commit(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL);
- if (!ret)
- bch2_btree_iter_set_pos(&iter, next_pos);
+ bch2_trans_init(&trans, c, 0, 0);
+
+ for (i = 0; i < nr_data; i++) {
+ ret = ec_stripe_update_bucket(&trans, s, i);
if (ret)
break;
}
- if (ret == -EINTR)
- goto retry;
- bch2_trans_iter_exit(&trans, &iter);
+
bch2_trans_exit(&trans);
- bch2_bkey_buf_exit(&sk, c);
return ret;
}
{
struct bch_fs *c = s->c;
struct open_bucket *ob;
- struct bkey_i *k;
struct stripe *m;
struct bch_stripe *v = &s->new_stripe.key.v;
unsigned i, nr_data = v->nr_blocks - v->nr_redundant;
BUG_ON(!s->allocated);
- if (!percpu_ref_tryget(&c->writes))
+ if (!percpu_ref_tryget_live(&c->writes))
goto err;
ec_generate_ec(&s->new_stripe);
goto err_put_writes;
}
- for_each_keylist_key(&s->keys, k) {
- ret = ec_stripe_update_ptrs(c, &s->new_stripe, &k->k);
- if (ret) {
- bch_err(c, "error creating stripe: error %i updating pointers", ret);
- break;
- }
- }
+ ret = ec_stripe_update_extents(c, &s->new_stripe);
+ if (ret)
+ bch_err(c, "error creating stripe: error updating pointers: %s",
+ bch2_err_str(ret));
spin_lock(&c->ec_stripes_heap_lock);
m = genradix_ptr(&c->stripes, s->new_stripe.key.k.p.offset);
}
}
- bch2_keylist_free(&s->keys, s->inline_keys);
-
ec_stripe_buf_exit(&s->existing_stripe);
ec_stripe_buf_exit(&s->new_stripe);
closure_debug_destroy(&s->iodone);
return ob->ec->new_stripe.data[ob->ec_idx] + (offset << 9);
}
-void bch2_ob_add_backpointer(struct bch_fs *c, struct open_bucket *ob,
- struct bkey *k)
-{
- struct ec_stripe_new *ec = ob->ec;
-
- if (!ec)
- return;
-
- mutex_lock(&ec->lock);
-
- if (bch2_keylist_realloc(&ec->keys, ec->inline_keys,
- ARRAY_SIZE(ec->inline_keys),
- BKEY_U64s)) {
- BUG();
- }
-
- bkey_init(&ec->keys.top->k);
- ec->keys.top->k.p = k->p;
- ec->keys.top->k.size = k->size;
- bch2_keylist_push(&ec->keys);
-
- mutex_unlock(&ec->lock);
-}
-
static int unsigned_cmp(const void *_l, const void *_r)
{
unsigned l = *((const unsigned *) _l);
BCH_BKEY_PTRS_MAX) - h->redundancy;
s->nr_parity = h->redundancy;
- bch2_keylist_init(&s->keys, s->inline_keys);
-
ec_stripe_key_init(c, &s->new_stripe.key, s->nr_data,
s->nr_parity, h->blocksize);
BUG_ON(nr_have_data > h->s->nr_data);
BUG_ON(nr_have_parity > h->s->nr_parity);
- percpu_down_read(&c->mark_lock);
- rcu_read_lock();
-
buckets.nr = 0;
if (nr_have_parity < h->s->nr_parity) {
ret = bch2_bucket_alloc_set(c, &buckets,
&nr_have_parity,
&have_cache,
h->copygc
- ? RESERVE_MOVINGGC
- : RESERVE_NONE,
+ ? RESERVE_movinggc
+ : RESERVE_none,
0,
cl);
}
if (ret)
- goto err;
+ return ret;
}
buckets.nr = 0;
&nr_have_data,
&have_cache,
h->copygc
- ? RESERVE_MOVINGGC
- : RESERVE_NONE,
+ ? RESERVE_movinggc
+ : RESERVE_none,
0,
cl);
}
if (ret)
- goto err;
+ return ret;
}
-err:
- rcu_read_unlock();
- percpu_up_read(&c->mark_lock);
- return ret;
+
+ return 0;
}
/* XXX: doesn't obey target: */
int ret;
idx = get_existing_stripe(c, h);
- if (idx < 0) {
- bch_err(c, "failed to find an existing stripe");
- return -ENOSPC;
- }
+ if (idx < 0)
+ return -BCH_ERR_ENOSPC_stripe_reuse;
h->s->have_existing_stripe = true;
ret = get_stripe_key(c, idx, &h->s->existing_stripe);
static int __bch2_ec_stripe_head_reserve(struct bch_fs *c,
struct ec_stripe_head *h)
{
- int ret;
-
- ret = bch2_disk_reservation_get(c, &h->s->res,
- h->blocksize,
- h->s->nr_parity, 0);
-
- if (ret) {
- /*
- * This means we need to wait for copygc to
- * empty out buckets from existing stripes:
- */
- bch_err(c, "failed to reserve stripe");
- }
-
- return ret;
+ return bch2_disk_reservation_get(c, &h->s->res,
+ h->blocksize,
+ h->s->nr_parity, 0);
}
struct ec_stripe_head *bch2_ec_stripe_head_get(struct bch_fs *c,
ret = __bch2_ec_stripe_head_reserve(c, h);
if (ret && needs_stripe_new)
ret = __bch2_ec_stripe_head_reuse(c, h);
- if (ret)
+ if (ret) {
+ bch_err_ratelimited(c, "failed to get stripe: %s", bch2_err_str(ret));
goto err;
+ }
if (!h->s->allocated) {
ret = new_stripe_alloc_buckets(c, h, cl);
for (i = 0; i < min_t(size_t, h->used, 20); i++) {
m = genradix_ptr(&c->stripes, h->data[i].idx);
- pr_buf(out, "%zu %u/%u+%u\n", h->data[i].idx,
+ prt_printf(out, "%zu %u/%u+%u\n", h->data[i].idx,
h->data[i].blocks_nonempty,
m->nr_blocks - m->nr_redundant,
m->nr_redundant);
mutex_lock(&c->ec_stripe_head_lock);
list_for_each_entry(h, &c->ec_stripe_head_list, list) {
- pr_buf(out, "target %u algo %u redundancy %u:\n",
+ prt_printf(out, "target %u algo %u redundancy %u:\n",
h->target, h->algo, h->redundancy);
if (h->s)
- pr_buf(out, "\tpending: blocks %u+%u allocated %u\n",
+ prt_printf(out, "\tpending: blocks %u+%u allocated %u\n",
h->s->nr_data, h->s->nr_parity,
bitmap_weight(h->s->blocks_allocated,
h->s->nr_data));
mutex_lock(&c->ec_stripe_new_lock);
list_for_each_entry(s, &c->ec_stripe_new_list, list) {
- pr_buf(out, "\tin flight: blocks %u+%u pin %u\n",
+ prt_printf(out, "\tin flight: blocks %u+%u pin %u\n",
s->nr_data, s->nr_parity,
atomic_read(&s->pin));
}
bioset_exit(&c->ec_bioset);
}
-int bch2_fs_ec_init(struct bch_fs *c)
+void bch2_fs_ec_init_early(struct bch_fs *c)
{
INIT_WORK(&c->ec_stripe_create_work, ec_stripe_create_work);
INIT_WORK(&c->ec_stripe_delete_work, ec_stripe_delete_work);
+}
+int bch2_fs_ec_init(struct bch_fs *c)
+{
return bioset_init(&c->ec_bioset, 1, offsetof(struct ec_bio, bio),
BIOSET_NEED_BVECS);
}
projects / bcachefs-tools-debian / blobdiff