#include "bcachefs.h"
#include "alloc_foreground.h"
+#include "backpointers.h"
#include "bkey_buf.h"
#include "bset.h"
#include "btree_gc.h"
#include "io.h"
#include "keylist.h"
#include "recovery.h"
+#include "replicas.h"
#include "super-io.h"
#include "util.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_eq(k.k->p, POS_MIN)) {
+ prt_printf(err, "stripe at POS_MIN");
+ return -BCH_ERR_invalid_bkey;
+ }
- if (k.k->p.inode)
- return "invalid stripe key";
+ if (k.k->p.inode) {
+ prt_printf(err, "nonzero inode field");
+ return -BCH_ERR_invalid_bkey;
+ }
- 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 -BCH_ERR_invalid_bkey;
+ }
- 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 -BCH_ERR_invalid_bkey;
+ }
- 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));
}
/* returns blocknr in stripe that we matched: */
-static int bkey_matches_stripe(struct bch_stripe *s,
- struct bkey_s_c k)
+static const struct bch_extent_ptr *bkey_matches_stripe(struct bch_stripe *s,
+ struct bkey_s_c k, unsigned *block)
{
struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
const struct bch_extent_ptr *ptr;
bkey_for_each_ptr(ptrs, ptr)
for (i = 0; i < nr_data; i++)
if (__bch2_ptr_matches_stripe(&s->ptrs[i], ptr,
- le16_to_cpu(s->sectors)))
- return i;
+ le16_to_cpu(s->sectors))) {
+ *block = i;
+ return ptr;
+ }
- return -1;
+ return NULL;
}
static bool extent_has_stripe_ptr(struct bkey_s_c k, u64 idx)
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;
}
this_cpu_add(ca->io_done->sectors[rw][data_type], buf->size);
while (offset < bytes) {
- unsigned nr_iovecs = min_t(size_t, BIO_MAX_PAGES,
+ unsigned nr_iovecs = min_t(size_t, BIO_MAX_VECS,
DIV_ROUND_UP(bytes, PAGE_SIZE));
unsigned b = min_t(size_t, bytes - offset,
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;
static int get_stripe_key(struct bch_fs *c, u64 idx, struct ec_stripe_buf *stripe)
{
struct btree_trans trans;
- struct btree_iter *iter;
+ struct btree_iter iter;
struct bkey_s_c k;
int ret;
bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_stripes, POS(0, idx), BTREE_ITER_SLOTS);
- k = bch2_btree_iter_peek_slot(iter);
+ bch2_trans_iter_init(&trans, &iter, BTREE_ID_stripes,
+ POS(0, idx), BTREE_ITER_SLOTS);
+ k = bch2_btree_iter_peek_slot(&iter);
ret = bkey_err(k);
if (ret)
goto err;
}
bkey_reassemble(&stripe->key.k_i, k);
err:
+ bch2_trans_iter_exit(&trans, &iter);
bch2_trans_exit(&trans);
return ret;
}
free_heap(&n);
}
- if (!genradix_ptr_alloc(&c->stripes[0], idx, gfp))
+ if (!genradix_ptr_alloc(&c->stripes, idx, gfp))
return -ENOMEM;
if (c->gc_pos.phase != GC_PHASE_NOT_RUNNING &&
- !genradix_ptr_alloc(&c->stripes[1], idx, gfp))
+ !genradix_ptr_alloc(&c->gc_stripes, idx, gfp))
return -ENOMEM;
return 0;
}
-static int ec_stripe_mem_alloc(struct bch_fs *c,
+static int ec_stripe_mem_alloc(struct btree_trans *trans,
struct btree_iter *iter)
{
size_t idx = iter->pos.offset;
- int ret = 0;
-
- if (!__ec_stripe_mem_alloc(c, idx, GFP_NOWAIT|__GFP_NOWARN))
- return ret;
- bch2_trans_unlock(iter->trans);
- ret = -EINTR;
+ if (!__ec_stripe_mem_alloc(trans->c, idx, GFP_NOWAIT|__GFP_NOWARN))
+ return 0;
- if (!__ec_stripe_mem_alloc(c, idx, GFP_KERNEL))
- return ret;
+ bch2_trans_unlock(trans);
- 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 bch_fs *c = container_of(h, struct bch_fs, ec_stripes_heap);
- genradix_ptr(&c->stripes[0], h->data[i].idx)->heap_idx = i;
+ genradix_ptr(&c->stripes, h->data[i].idx)->heap_idx = i;
}
static void heap_verify_backpointer(struct bch_fs *c, size_t idx)
{
ec_stripes_heap *h = &c->ec_stripes_heap;
- struct stripe *m = genradix_ptr(&c->stripes[0], idx);
+ struct stripe *m = genradix_ptr(&c->stripes, idx);
BUG_ON(!m->alive);
BUG_ON(m->heap_idx >= h->used);
{
return bch2_btree_delete_range(c, BTREE_ID_stripes,
POS(0, idx),
- POS(0, idx + 1),
- NULL);
+ POS(0, idx),
+ 0, NULL);
}
static void ec_stripe_delete_work(struct work_struct *work)
break;
}
- bch2_stripes_heap_del(c, genradix_ptr(&c->stripes[0], idx), idx);
+ bch2_stripes_heap_del(c, genradix_ptr(&c->stripes, idx), idx);
spin_unlock(&c->ec_stripes_heap_lock);
if (ec_stripe_delete(c, idx))
/* stripe creation: */
-static int ec_stripe_bkey_insert(struct bch_fs *c,
+static int ec_stripe_bkey_insert(struct btree_trans *trans,
struct bkey_i_stripe *stripe,
struct disk_reservation *res)
{
- struct btree_trans trans;
- struct btree_iter *iter;
+ struct bch_fs *c = trans->c;
+ struct btree_iter iter;
struct bkey_s_c k;
struct bpos min_pos = POS(0, 1);
struct bpos start_pos = bpos_max(min_pos, POS(0, c->ec_stripe_hint));
int ret;
- bch2_trans_init(&trans, c, 0, 0);
-retry:
- bch2_trans_begin(&trans);
-
- 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 (bkey_gt(k.k->p, POS(0, U32_MAX))) {
if (start_pos.offset) {
start_pos = min_pos;
- bch2_btree_iter_set_pos(iter, start_pos);
+ bch2_btree_iter_set_pos(&iter, start_pos);
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;
- ret = ec_stripe_mem_alloc(c, iter);
if (ret)
goto err;
- stripe->k.p = iter->pos;
+ ret = ec_stripe_mem_alloc(trans, &iter);
+ if (ret)
+ goto err;
- bch2_trans_update(&trans, iter, &stripe->k_i, 0);
+ stripe->k.p = iter.pos;
- ret = bch2_trans_commit(&trans, res, NULL,
- BTREE_INSERT_NOFAIL);
+ ret = bch2_trans_update(trans, &iter, &stripe->k_i, 0);
err:
- bch2_trans_iter_put(&trans, iter);
-
- if (ret == -EINTR)
- goto retry;
-
- c->ec_stripe_hint = ret ? start_pos.offset : start_pos.offset + 1;
- bch2_trans_exit(&trans);
+ bch2_trans_iter_exit(trans, &iter);
return ret;
}
static int ec_stripe_bkey_update(struct btree_trans *trans,
- struct bkey_i_stripe *new)
+ struct bkey_i_stripe *new,
+ struct disk_reservation *res)
{
- struct btree_iter *iter;
+ struct btree_iter iter;
struct bkey_s_c k;
const struct bch_stripe *existing;
unsigned i;
int ret;
- iter = bch2_trans_get_iter(trans, BTREE_ID_stripes,
- new->k.p, BTREE_ITER_INTENT);
- k = bch2_btree_iter_peek_slot(iter);
+ bch2_trans_iter_init(trans, &iter, BTREE_ID_stripes,
+ new->k.p, BTREE_ITER_INTENT);
+ k = bch2_btree_iter_peek_slot(&iter);
ret = bkey_err(k);
if (ret)
goto err;
stripe_blockcount_set(&new->v, i,
stripe_blockcount_get(existing, i));
- bch2_trans_update(trans, iter, &new->k_i, 0);
+ ret = bch2_trans_update(trans, &iter, &new->k_i, 0);
err:
- bch2_trans_iter_put(trans, iter);
+ bch2_trans_iter_exit(trans, &iter);
return ret;
}
};
}
-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;
- 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;
- bch2_bkey_buf_init(&sk);
- bch2_trans_init(&trans, c, BTREE_ITER_MAX, 0);
+ n = bch2_bkey_make_mut(trans, k);
+ ret = PTR_ERR_OR_ZERO(n);
+ if (ret)
+ return ret;
- /* XXX this doesn't support the reflink btree */
+ 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);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_extents,
- bkey_start_pos(pos),
- BTREE_ITER_INTENT);
+ extent_stripe_ptr_add(bkey_i_to_s_extent(n), s, ec_ptr, block);
- while ((k = bch2_btree_iter_peek(iter)).k &&
- !(ret = bkey_err(k)) &&
- bkey_cmp(bkey_start_pos(k.k), pos->p) < 0) {
- struct bch_extent_ptr *ptr, *ec_ptr = NULL;
+ return bch2_trans_update(trans, iter, n, 0);
+}
- if (extent_has_stripe_ptr(k, s->key.k.p.offset)) {
- bch2_btree_iter_next(iter);
- continue;
+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 (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;
}
- block = bkey_matches_stripe(&s->key.v, k);
- if (block < 0) {
- bch2_btree_iter_next(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;
+
+ bp_offset++;
+ }
- bch2_bkey_buf_reassemble(&sk, c, k);
- e = bkey_i_to_s_extent(sk.k);
+ if (bch2_err_matches(ret, BCH_ERR_transaction_restart))
+ goto retry;
- 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);
+ return ret;
+}
- extent_stripe_ptr_add(e, s, ec_ptr, block);
+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;
- bch2_btree_iter_set_pos(iter, bkey_start_pos(&sk.k->k));
- bch2_trans_update(&trans, iter, sk.k, 0);
+ bch2_trans_init(&trans, c, 0, 0);
- ret = bch2_trans_commit(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL);
- if (ret == -EINTR)
- ret = 0;
+ for (i = 0; i < nr_data; i++) {
+ ret = ec_stripe_update_bucket(&trans, s, i);
if (ret)
break;
}
+
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;
closure_sync(&s->iodone);
if (s->err) {
- if (s->err != -EROFS)
+ if (!bch2_err_matches(s->err, EROFS))
bch_err(c, "error creating stripe: error writing data buckets");
goto err;
}
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;
}
- ret = s->have_existing_stripe
- ? bch2_trans_do(c, &s->res, NULL, BTREE_INSERT_NOFAIL,
- ec_stripe_bkey_update(&trans, &s->new_stripe.key))
- : ec_stripe_bkey_insert(c, &s->new_stripe.key, &s->res);
+ ret = bch2_trans_do(c, &s->res, NULL, BTREE_INSERT_NOFAIL,
+ s->have_existing_stripe
+ ? ec_stripe_bkey_update(&trans, &s->new_stripe.key, &s->res)
+ : ec_stripe_bkey_insert(&trans, &s->new_stripe.key, &s->res));
if (ret) {
bch_err(c, "error creating stripe: error creating stripe key");
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[0], s->new_stripe.key.k.p.offset);
+ m = genradix_ptr(&c->stripes, s->new_stripe.key.k.p.offset);
BUG_ON(m->on_heap);
bch2_stripes_heap_insert(c, m, 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);
if (!ob)
return NULL;
- ca = bch_dev_bkey_exists(c, ob->ptr.dev);
+ ca = bch_dev_bkey_exists(c, ob->dev);
offset = ca->mi.bucket_size - ob->sectors_free;
return ob->ec->new_stripe.data[ob->ec_idx] + (offset << 9);
}
-void bch2_ec_add_backpointer(struct bch_fs *c, struct write_point *wp,
- struct bpos pos, unsigned sectors)
-{
- struct open_bucket *ob = ec_open_bucket(c, &wp->ptrs);
- struct ec_stripe_new *ec;
-
- if (!ob)
- return;
-
- ec = ob->ec;
- 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 = pos;
- bch2_key_resize(&ec->keys.top->k, sectors);
- bch2_keylist_push(&ec->keys);
-
- mutex_unlock(&ec->lock);
-}
-
static int unsigned_cmp(const void *_l, const void *_r)
{
unsigned l = *((const unsigned *) _l);
s->v.algorithm = 0;
s->v.nr_blocks = nr_data + nr_parity;
s->v.nr_redundant = nr_parity;
- s->v.csum_granularity_bits = ilog2(c->sb.encoded_extent_max);
- s->v.csum_type = BCH_CSUM_CRC32C;
+ s->v.csum_granularity_bits = ilog2(c->opts.encoded_extent_max >> 9);
+ s->v.csum_type = BCH_CSUM_crc32c;
s->v.pad = 0;
while ((u64s = stripe_val_u64s(&s->v)) > BKEY_VAL_U64s_MAX) {
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);
return h;
}
-static enum bucket_alloc_ret
-new_stripe_alloc_buckets(struct bch_fs *c, struct ec_stripe_head *h,
- struct closure *cl)
+static int new_stripe_alloc_buckets(struct bch_fs *c, struct ec_stripe_head *h,
+ struct closure *cl)
{
struct bch_devs_mask devs = h->devs;
struct open_bucket *ob;
struct open_buckets buckets;
unsigned i, j, nr_have_parity = 0, nr_have_data = 0;
bool have_cache = true;
- enum bucket_alloc_ret ret = ALLOC_SUCCESS;
+ int ret = 0;
for (i = 0; i < h->s->new_stripe.key.v.nr_blocks; i++) {
if (test_bit(i, h->s->blocks_gotten)) {
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);
BUG_ON(j >= h->s->nr_data + h->s->nr_parity);
h->s->blocks[j] = buckets.v[i];
- h->s->new_stripe.key.v.ptrs[j] = ob->ptr;
+ h->s->new_stripe.key.v.ptrs[j] = bch2_ob_ptr(c, ob);
__set_bit(j, h->s->blocks_gotten);
}
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);
BUG_ON(j >= h->s->nr_data);
h->s->blocks[j] = buckets.v[i];
- h->s->new_stripe.key.v.ptrs[j] = ob->ptr;
+ h->s->new_stripe.key.v.ptrs[j] = bch2_ob_ptr(c, ob);
__set_bit(j, h->s->blocks_gotten);
}
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: */
continue;
stripe_idx = h->data[heap_idx].idx;
- m = genradix_ptr(&c->stripes[0], stripe_idx);
+ m = genradix_ptr(&c->stripes, stripe_idx);
if (m->algorithm == head->algo &&
m->nr_redundant == head->redundancy &&
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);
err:
bch2_ec_stripe_head_put(c, h);
- return ERR_PTR(-ret);
+ return ERR_PTR(ret);
}
void bch2_ec_stop_dev(struct bch_fs *c, struct bch_dev *ca)
continue;
ob = c->open_buckets + h->s->blocks[i];
- if (ob->ptr.dev == ca->dev_idx)
+ if (ob->dev == ca->dev_idx)
goto found;
}
goto unlock;
struct genradix_iter iter;
struct stripe *m;
- genradix_for_each(&c->stripes[0], iter, m)
+ genradix_for_each(&c->stripes, iter, m)
if (m->alive)
bch2_stripes_heap_insert(c, m, iter.pos);
}
-static int __bch2_stripe_write_key(struct btree_trans *trans,
- struct btree_iter *iter,
- struct stripe *m,
- size_t idx,
- struct bkey_i_stripe *new_key)
+int bch2_stripes_read(struct bch_fs *c)
{
- const struct bch_stripe *v;
+ struct btree_trans trans;
+ struct btree_iter iter;
struct bkey_s_c k;
+ const struct bch_stripe *s;
+ struct stripe *m;
unsigned i;
int ret;
- bch2_btree_iter_set_pos(iter, POS(0, idx));
-
- k = bch2_btree_iter_peek_slot(iter);
- ret = bkey_err(k);
- if (ret)
- return ret;
-
- if (k.k->type != KEY_TYPE_stripe)
- return -EIO;
-
- v = bkey_s_c_to_stripe(k).v;
- for (i = 0; i < v->nr_blocks; i++)
- if (m->block_sectors[i] != stripe_blockcount_get(v, i))
- goto write;
- return 0;
-write:
- bkey_reassemble(&new_key->k_i, k);
-
- for (i = 0; i < new_key->v.nr_blocks; i++)
- stripe_blockcount_set(&new_key->v, i,
- m->block_sectors[i]);
-
- bch2_trans_update(trans, iter, &new_key->k_i, 0);
- return 0;
-}
-
-int bch2_stripes_write(struct bch_fs *c, unsigned flags)
-{
- struct btree_trans trans;
- struct btree_iter *iter;
- struct genradix_iter giter;
- struct bkey_i_stripe *new_key;
- struct stripe *m;
- int ret = 0;
-
- new_key = kmalloc(255 * sizeof(u64), GFP_KERNEL);
- BUG_ON(!new_key);
-
bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_stripes, POS_MIN,
- BTREE_ITER_SLOTS|BTREE_ITER_INTENT);
-
- genradix_for_each(&c->stripes[0], giter, m) {
- if (!m->alive)
+ for_each_btree_key(&trans, iter, BTREE_ID_stripes, POS_MIN,
+ BTREE_ITER_PREFETCH, k, ret) {
+ if (k.k->type != KEY_TYPE_stripe)
continue;
- ret = __bch2_trans_do(&trans, NULL, NULL,
- BTREE_INSERT_NOFAIL|flags,
- __bch2_stripe_write_key(&trans, iter, m,
- giter.pos, new_key));
-
+ ret = __ec_stripe_mem_alloc(c, k.k->p.offset, GFP_KERNEL);
if (ret)
break;
- }
- bch2_trans_exit(&trans);
+ s = bkey_s_c_to_stripe(k).v;
- kfree(new_key);
+ m = genradix_ptr(&c->stripes, k.k->p.offset);
+ m->alive = true;
+ m->sectors = le16_to_cpu(s->sectors);
+ m->algorithm = s->algorithm;
+ m->nr_blocks = s->nr_blocks;
+ m->nr_redundant = s->nr_redundant;
+ m->blocks_nonempty = 0;
- return ret;
-}
-
-static int bch2_stripes_read_fn(struct bch_fs *c, enum btree_id id,
- unsigned level, struct bkey_s_c k)
-{
- int ret = 0;
+ for (i = 0; i < s->nr_blocks; i++)
+ m->blocks_nonempty += !!stripe_blockcount_get(s, i);
- if (k.k->type == KEY_TYPE_stripe) {
- ret = __ec_stripe_mem_alloc(c, k.k->p.offset, GFP_KERNEL) ?:
- bch2_mark_key(c, k, 0, 0, NULL, 0,
- BTREE_TRIGGER_NOATOMIC);
- if (ret)
- return ret;
+ spin_lock(&c->ec_stripes_heap_lock);
+ bch2_stripes_heap_update(c, m, k.k->p.offset);
+ spin_unlock(&c->ec_stripes_heap_lock);
}
+ bch2_trans_iter_exit(&trans, &iter);
- return ret;
-}
+ bch2_trans_exit(&trans);
-int bch2_stripes_read(struct bch_fs *c, struct journal_keys *journal_keys)
-{
- int ret = bch2_btree_and_journal_walk(c, journal_keys, BTREE_ID_stripes,
- NULL, bch2_stripes_read_fn);
if (ret)
bch_err(c, "error reading stripes: %i", ret);
return ret;
}
-int bch2_ec_mem_alloc(struct bch_fs *c, bool gc)
-{
- struct btree_trans trans;
- struct btree_iter *iter;
- struct bkey_s_c k;
- size_t i, idx = 0;
- int ret = 0;
-
- bch2_trans_init(&trans, c, 0, 0);
- iter = bch2_trans_get_iter(&trans, BTREE_ID_stripes, POS(0, U64_MAX), 0);
-
- k = bch2_btree_iter_prev(iter);
- if (!IS_ERR_OR_NULL(k.k))
- idx = k.k->p.offset + 1;
-
- bch2_trans_iter_put(&trans, iter);
- ret = bch2_trans_exit(&trans);
- if (ret)
- return ret;
-
- if (!idx)
- return 0;
-
- if (!gc &&
- !init_heap(&c->ec_stripes_heap, roundup_pow_of_two(idx),
- GFP_KERNEL))
- return -ENOMEM;
-#if 0
- ret = genradix_prealloc(&c->stripes[gc], idx, GFP_KERNEL);
-#else
- for (i = 0; i < idx; i++)
- if (!genradix_ptr_alloc(&c->stripes[gc], i, GFP_KERNEL))
- return -ENOMEM;
-#endif
- return 0;
-}
-
void bch2_stripes_heap_to_text(struct printbuf *out, struct bch_fs *c)
{
ec_stripes_heap *h = &c->ec_stripes_heap;
spin_lock(&c->ec_stripes_heap_lock);
for (i = 0; i < min_t(size_t, h->used, 20); i++) {
- m = genradix_ptr(&c->stripes[0], h->data[i].idx);
+ 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));
}
BUG_ON(!list_empty(&c->ec_stripe_new_list));
free_heap(&c->ec_stripes_heap);
- genradix_free(&c->stripes[0]);
+ genradix_free(&c->stripes);
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