#include "debug.h"
#include "error.h"
#include "extents.h"
-#include "io.h"
+#include "io_write.h"
#include "journal_reclaim.h"
#include "journal_seq_blacklist.h"
+#include "recovery.h"
#include "super-io.h"
+#include "trace.h"
#include <linux/sched/mm.h>
-#include <trace/events/bcachefs.h>
void bch2_btree_node_io_unlock(struct btree *b)
{
void bch2_btree_node_io_lock(struct btree *b)
{
- BUG_ON(lock_class_is_held(&bch2_btree_node_lock_key));
+ bch2_assert_btree_nodes_not_locked();
wait_on_bit_lock_io(&b->flags, BTREE_NODE_write_in_flight,
TASK_UNINTERRUPTIBLE);
void bch2_btree_node_wait_on_read(struct btree *b)
{
- BUG_ON(lock_class_is_held(&bch2_btree_node_lock_key));
+ bch2_assert_btree_nodes_not_locked();
wait_on_bit_io(&b->flags, BTREE_NODE_read_in_flight,
TASK_UNINTERRUPTIBLE);
void bch2_btree_node_wait_on_write(struct btree *b)
{
- BUG_ON(lock_class_is_held(&bch2_btree_node_lock_key));
+ bch2_assert_btree_nodes_not_locked();
wait_on_bit_io(&b->flags, BTREE_NODE_write_in_flight,
TASK_UNINTERRUPTIBLE);
if (start == end)
return;
- for (p = start, k = bkey_next(start);
+ for (p = start, k = bkey_p_next(start);
k != end;
- p = k, k = bkey_next(k)) {
+ p = k, k = bkey_p_next(k)) {
struct bkey l = bkey_unpack_key(b, p);
struct bkey r = bkey_unpack_key(b, k);
- BUG_ON(bpos_cmp(l.p, bkey_start_pos(&r)) >= 0);
+ BUG_ON(bpos_ge(l.p, bkey_start_pos(&r)));
}
#endif
}
{
struct bkey_packed *k;
- for (k = i->start; k != vstruct_last(i); k = bkey_next(k))
+ for (k = i->start; k != vstruct_last(i); k = bkey_p_next(k))
k->needs_whiteout = v;
}
if (used_mempool)
mempool_free(p, &c->btree_bounce_pool);
else
- vpfree(p, size);
+ kvfree(p);
}
static void *btree_bounce_alloc(struct bch_fs *c, size_t size,
unsigned flags = memalloc_nofs_save();
void *p;
- BUG_ON(size > btree_bytes(c));
+ BUG_ON(size > c->opts.btree_node_size);
*used_mempool = false;
- p = vpmalloc(size, __GFP_NOWARN|GFP_NOWAIT);
+ p = kvmalloc(size, __GFP_NOWARN|GFP_NOWAIT);
if (!p) {
*used_mempool = true;
- p = mempool_alloc(&c->btree_bounce_pool, GFP_NOIO);
+ p = mempool_alloc(&c->btree_bounce_pool, GFP_NOFS);
}
memalloc_nofs_restore(flags);
return p;
ptrs = ptrs_end = ((void *) new_whiteouts + bytes);
- for (k = unwritten_whiteouts_start(c, b);
- k != unwritten_whiteouts_end(c, b);
- k = bkey_next(k))
+ for (k = unwritten_whiteouts_start(b);
+ k != unwritten_whiteouts_end(b);
+ k = bkey_p_next(k))
*--ptrs = k;
sort_bkey_ptrs(b, ptrs, ptrs_end - ptrs);
k = new_whiteouts;
while (ptrs != ptrs_end) {
- bkey_copy(k, *ptrs);
- k = bkey_next(k);
+ bkey_p_copy(k, *ptrs);
+ k = bkey_p_next(k);
ptrs++;
}
verify_no_dups(b, new_whiteouts,
(void *) ((u64 *) new_whiteouts + b->whiteout_u64s));
- memcpy_u64s(unwritten_whiteouts_start(c, b),
+ memcpy_u64s(unwritten_whiteouts_start(b),
new_whiteouts, b->whiteout_u64s);
btree_bounce_free(c, bytes, used_mempool, new_whiteouts);
out = i->start;
for (k = start; k != end; k = n) {
- n = bkey_next(k);
+ n = bkey_p_next(k);
if (!bkey_deleted(k)) {
- bkey_copy(out, k);
- out = bkey_next(out);
+ bkey_p_copy(out, k);
+ out = bkey_p_next(out);
} else {
BUG_ON(k->needs_whiteout);
}
bool filter_whiteouts)
{
struct btree_node *out;
- struct sort_iter sort_iter;
+ struct sort_iter_stack sort_iter;
struct bset_tree *t;
struct bset *start_bset = bset(b, &b->set[start_idx]);
bool used_mempool = false;
bool sorting_entire_node = start_idx == 0 &&
end_idx == b->nsets;
- sort_iter_init(&sort_iter, b);
+ sort_iter_stack_init(&sort_iter, b);
for (t = b->set + start_idx;
t < b->set + end_idx;
t++) {
u64s += le16_to_cpu(bset(b, t)->u64s);
- sort_iter_add(&sort_iter,
+ sort_iter_add(&sort_iter.iter,
btree_bkey_first(b, t),
btree_bkey_last(b, t));
}
bytes = sorting_entire_node
- ? btree_bytes(c)
+ ? btree_buf_bytes(b)
: __vstruct_bytes(struct btree_node, u64s);
out = btree_bounce_alloc(c, bytes, &used_mempool);
start_time = local_clock();
- u64s = bch2_sort_keys(out->keys.start, &sort_iter, filter_whiteouts);
+ u64s = bch2_sort_keys(out->keys.start, &sort_iter.iter, filter_whiteouts);
out->keys.u64s = cpu_to_le16(u64s);
BUG_ON(vstruct_end(&out->keys) > (void *) out + bytes);
if (sorting_entire_node)
- bch2_time_stats_update(&c->times[BCH_TIME_btree_node_sort],
+ time_stats_update(&c->times[BCH_TIME_btree_node_sort],
start_time);
/* Make sure we preserve bset journal_seq: */
start_bset->journal_seq = cpu_to_le64(seq);
if (sorting_entire_node) {
- unsigned u64s = le16_to_cpu(out->keys.u64s);
+ u64s = le16_to_cpu(out->keys.u64s);
- BUG_ON(bytes != btree_bytes(c));
+ BUG_ON(bytes != btree_buf_bytes(b));
/*
* Our temporary buffer is the same size as the btree node's
&dst->format,
true);
- bch2_time_stats_update(&c->times[BCH_TIME_btree_node_sort],
+ time_stats_update(&c->times[BCH_TIME_btree_node_sort],
start_time);
set_btree_bset_end(dst, dst->set);
bch2_verify_btree_nr_keys(dst);
}
-#define SORT_CRIT (4096 / sizeof(u64))
-
/*
* We're about to add another bset to the btree node, so if there's currently
* too many bsets - sort some of them together:
t == bset_tree_last(b));
}
+/*
+ * If we have MAX_BSETS (3) bsets, should we sort them all down to just one?
+ *
+ * The first bset is going to be of similar order to the size of the node, the
+ * last bset is bounded by btree_write_set_buffer(), which is set to keep the
+ * memmove on insert from being too expensive: the middle bset should, ideally,
+ * be the geometric mean of the first and the last.
+ *
+ * Returns true if the middle bset is greater than that geometric mean:
+ */
+static inline bool should_compact_all(struct bch_fs *c, struct btree *b)
+{
+ unsigned mid_u64s_bits =
+ (ilog2(btree_max_u64s(c)) + BTREE_WRITE_SET_U64s_BITS) / 2;
+
+ return bset_u64s(&b->set[1]) > 1U << mid_u64s_bits;
+}
+
/*
* @bch_btree_init_next - initialize a new (unwritten) bset that can then be
* inserted into
struct btree_node_entry *bne;
bool reinit_iter = false;
- EBUG_ON(!(b->c.lock.state.seq & 1));
+ EBUG_ON(!six_lock_counts(&b->c.lock).n[SIX_LOCK_write]);
BUG_ON(bset_written(b, bset(b, &b->set[1])));
+ BUG_ON(btree_node_just_written(b));
if (b->nsets == MAX_BSETS &&
- !btree_node_write_in_flight(b)) {
- unsigned log_u64s[] = {
- ilog2(bset_u64s(&b->set[0])),
- ilog2(bset_u64s(&b->set[1])),
- ilog2(bset_u64s(&b->set[2])),
- };
-
- if (log_u64s[1] >= (log_u64s[0] + log_u64s[2]) / 2) {
- bch2_btree_node_write(c, b, SIX_LOCK_write, 0);
- reinit_iter = true;
- }
+ !btree_node_write_in_flight(b) &&
+ should_compact_all(c, b)) {
+ bch2_btree_node_write(c, b, SIX_LOCK_write,
+ BTREE_WRITE_init_next_bset);
+ reinit_iter = true;
}
if (b->nsets == MAX_BSETS &&
bne = want_new_bset(c, b);
if (bne)
- bch2_bset_init_next(c, b, bne);
+ bch2_bset_init_next(b, bne);
bch2_btree_build_aux_trees(b);
bch2_trans_node_reinit_iter(trans, b);
}
-static void btree_pos_to_text(struct printbuf *out, struct bch_fs *c,
- struct btree *b)
-{
- pr_buf(out, "%s level %u/%u\n ",
- bch2_btree_ids[b->c.btree_id],
- b->c.level,
- c->btree_roots[b->c.btree_id].level);
- bch2_bkey_val_to_text(out, c, bkey_i_to_s_c(&b->key));
-}
-
static void btree_err_msg(struct printbuf *out, struct bch_fs *c,
struct bch_dev *ca,
struct btree *b, struct bset *i,
unsigned offset, int write)
{
- pr_buf(out, "error validating btree node ");
- if (write)
- pr_buf(out, "before write ");
+ prt_printf(out, bch2_log_msg(c, "%s"),
+ write == READ
+ ? "error validating btree node "
+ : "corrupt btree node before write ");
if (ca)
- pr_buf(out, "on %s ", ca->name);
- pr_buf(out, "at btree ");
- btree_pos_to_text(out, c, b);
+ prt_printf(out, "on %s ", ca->name);
+ prt_printf(out, "at btree ");
+ bch2_btree_pos_to_text(out, c, b);
- pr_buf(out, "\n node offset %u", b->written);
+ prt_printf(out, "\n node offset %u/%u",
+ b->written, btree_ptr_sectors_written(&b->key));
if (i)
- pr_buf(out, " bset u64s %u", le16_to_cpu(i->u64s));
+ prt_printf(out, " bset u64s %u", le16_to_cpu(i->u64s));
+ prt_str(out, ": ");
}
-enum btree_err_type {
- BTREE_ERR_FIXABLE,
- BTREE_ERR_WANT_RETRY,
- BTREE_ERR_MUST_RETRY,
- BTREE_ERR_FATAL,
-};
+__printf(9, 10)
+static int __btree_err(int ret,
+ struct bch_fs *c,
+ struct bch_dev *ca,
+ struct btree *b,
+ struct bset *i,
+ int write,
+ bool have_retry,
+ enum bch_sb_error_id err_type,
+ const char *fmt, ...)
+{
+ struct printbuf out = PRINTBUF;
+ va_list args;
-enum btree_validate_ret {
- BTREE_RETRY_READ = 64,
-};
+ btree_err_msg(&out, c, ca, b, i, b->written, write);
+
+ va_start(args, fmt);
+ prt_vprintf(&out, fmt, args);
+ va_end(args);
-#define btree_err(type, c, ca, b, i, msg, ...) \
+ if (write == WRITE) {
+ bch2_print_string_as_lines(KERN_ERR, out.buf);
+ ret = c->opts.errors == BCH_ON_ERROR_continue
+ ? 0
+ : -BCH_ERR_fsck_errors_not_fixed;
+ goto out;
+ }
+
+ if (!have_retry && ret == -BCH_ERR_btree_node_read_err_want_retry)
+ ret = -BCH_ERR_btree_node_read_err_fixable;
+ if (!have_retry && ret == -BCH_ERR_btree_node_read_err_must_retry)
+ ret = -BCH_ERR_btree_node_read_err_bad_node;
+
+ if (ret != -BCH_ERR_btree_node_read_err_fixable)
+ bch2_sb_error_count(c, err_type);
+
+ switch (ret) {
+ case -BCH_ERR_btree_node_read_err_fixable:
+ ret = bch2_fsck_err(c, FSCK_CAN_FIX, err_type, "%s", out.buf);
+ if (ret != -BCH_ERR_fsck_fix &&
+ ret != -BCH_ERR_fsck_ignore)
+ goto fsck_err;
+ ret = -BCH_ERR_fsck_fix;
+ break;
+ case -BCH_ERR_btree_node_read_err_want_retry:
+ case -BCH_ERR_btree_node_read_err_must_retry:
+ bch2_print_string_as_lines(KERN_ERR, out.buf);
+ break;
+ case -BCH_ERR_btree_node_read_err_bad_node:
+ bch2_print_string_as_lines(KERN_ERR, out.buf);
+ ret = bch2_topology_error(c);
+ break;
+ case -BCH_ERR_btree_node_read_err_incompatible:
+ bch2_print_string_as_lines(KERN_ERR, out.buf);
+ ret = -BCH_ERR_fsck_errors_not_fixed;
+ break;
+ default:
+ BUG();
+ }
+out:
+fsck_err:
+ printbuf_exit(&out);
+ return ret;
+}
+
+#define btree_err(type, c, ca, b, i, _err_type, msg, ...) \
({ \
- __label__ out; \
- struct printbuf out = PRINTBUF; \
- \
- btree_err_msg(&out, c, ca, b, i, b->written, write); \
- pr_buf(&out, ": " msg, ##__VA_ARGS__); \
+ int _ret = __btree_err(type, c, ca, b, i, write, have_retry, \
+ BCH_FSCK_ERR_##_err_type, \
+ msg, ##__VA_ARGS__); \
\
- if (type == BTREE_ERR_FIXABLE && \
- write == READ && \
- !test_bit(BCH_FS_INITIAL_GC_DONE, &c->flags)) { \
- mustfix_fsck_err(c, "%s", out.buf); \
- goto out; \
+ if (_ret != -BCH_ERR_fsck_fix) { \
+ ret = _ret; \
+ goto fsck_err; \
} \
\
- switch (write) { \
- case READ: \
- bch_err(c, "%s", out.buf); \
- \
- switch (type) { \
- case BTREE_ERR_FIXABLE: \
- ret = BCH_FSCK_ERRORS_NOT_FIXED; \
- goto fsck_err; \
- case BTREE_ERR_WANT_RETRY: \
- if (have_retry) { \
- ret = BTREE_RETRY_READ; \
- goto fsck_err; \
- } \
- break; \
- case BTREE_ERR_MUST_RETRY: \
- ret = BTREE_RETRY_READ; \
- goto fsck_err; \
- case BTREE_ERR_FATAL: \
- ret = BCH_FSCK_ERRORS_NOT_FIXED; \
- goto fsck_err; \
- } \
- break; \
- case WRITE: \
- bch_err(c, "corrupt metadata before write: %s", out.buf);\
- \
- if (bch2_fs_inconsistent(c)) { \
- ret = BCH_FSCK_ERRORS_NOT_FIXED; \
- goto fsck_err; \
- } \
- break; \
- } \
-out: \
- printbuf_exit(&out); \
- true; \
+ *saw_error = true; \
})
#define btree_err_on(cond, ...) ((cond) ? btree_err(__VA_ARGS__) : false)
* When btree topology repair changes the start or end of a node, that might
* mean we have to drop keys that are no longer inside the node:
*/
+__cold
void bch2_btree_node_drop_keys_outside_node(struct btree *b)
{
struct bset_tree *t;
- struct bkey_s_c k;
- struct bkey unpacked;
- struct btree_node_iter iter;
for_each_bset(b, t) {
struct bset *i = bset(b, t);
struct bkey_packed *k;
- for (k = i->start; k != vstruct_last(i); k = bkey_next(k))
+ for (k = i->start; k != vstruct_last(i); k = bkey_p_next(k))
if (bkey_cmp_left_packed(b, k, &b->data->min_key) >= 0)
break;
(u64 *) vstruct_end(i) - (u64 *) k);
i->u64s = cpu_to_le16(le16_to_cpu(i->u64s) - shift);
set_btree_bset_end(b, t);
- bch2_bset_set_no_aux_tree(b, t);
}
- for (k = i->start; k != vstruct_last(i); k = bkey_next(k))
+ for (k = i->start; k != vstruct_last(i); k = bkey_p_next(k))
if (bkey_cmp_left_packed(b, k, &b->data->max_key) > 0)
break;
if (k != vstruct_last(i)) {
i->u64s = cpu_to_le16((u64 *) k - (u64 *) i->start);
set_btree_bset_end(b, t);
- bch2_bset_set_no_aux_tree(b, t);
}
}
+ /*
+ * Always rebuild search trees: eytzinger search tree nodes directly
+ * depend on the values of min/max key:
+ */
+ bch2_bset_set_no_aux_tree(b, b->set);
bch2_btree_build_aux_trees(b);
+ struct bkey_s_c k;
+ struct bkey unpacked;
+ struct btree_node_iter iter;
for_each_btree_node_key_unpack(b, k, &iter, &unpacked) {
- BUG_ON(bpos_cmp(k.k->p, b->data->min_key) < 0);
- BUG_ON(bpos_cmp(k.k->p, b->data->max_key) > 0);
+ BUG_ON(bpos_lt(k.k->p, b->data->min_key));
+ BUG_ON(bpos_gt(k.k->p, b->data->max_key));
}
}
static int validate_bset(struct bch_fs *c, struct bch_dev *ca,
struct btree *b, struct bset *i,
unsigned offset, unsigned sectors,
- int write, bool have_retry)
+ int write, bool have_retry, bool *saw_error)
{
unsigned version = le16_to_cpu(i->version);
- const char *err;
struct printbuf buf1 = PRINTBUF;
struct printbuf buf2 = PRINTBUF;
int ret = 0;
- btree_err_on((version != BCH_BSET_VERSION_OLD &&
- version < bcachefs_metadata_version_min) ||
- version >= bcachefs_metadata_version_max,
- BTREE_ERR_FATAL, c, ca, b, i,
- "unsupported bset version");
+ btree_err_on(!bch2_version_compatible(version),
+ -BCH_ERR_btree_node_read_err_incompatible,
+ c, ca, b, i,
+ btree_node_unsupported_version,
+ "unsupported bset version %u.%u",
+ BCH_VERSION_MAJOR(version),
+ BCH_VERSION_MINOR(version));
if (btree_err_on(version < c->sb.version_min,
- BTREE_ERR_FIXABLE, c, NULL, b, i,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bset_older_than_sb_min,
"bset version %u older than superblock version_min %u",
version, c->sb.version_min)) {
mutex_lock(&c->sb_lock);
mutex_unlock(&c->sb_lock);
}
- if (btree_err_on(version > c->sb.version,
- BTREE_ERR_FIXABLE, c, NULL, b, i,
+ if (btree_err_on(BCH_VERSION_MAJOR(version) >
+ BCH_VERSION_MAJOR(c->sb.version),
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bset_newer_than_sb,
"bset version %u newer than superblock version %u",
version, c->sb.version)) {
mutex_lock(&c->sb_lock);
}
btree_err_on(BSET_SEPARATE_WHITEOUTS(i),
- BTREE_ERR_FATAL, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_incompatible,
+ c, ca, b, i,
+ btree_node_unsupported_version,
"BSET_SEPARATE_WHITEOUTS no longer supported");
if (btree_err_on(offset + sectors > btree_sectors(c),
- BTREE_ERR_FIXABLE, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, ca, b, i,
+ bset_past_end_of_btree_node,
"bset past end of btree node")) {
i->u64s = 0;
ret = 0;
}
btree_err_on(offset && !i->u64s,
- BTREE_ERR_FIXABLE, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, ca, b, i,
+ bset_empty,
"empty bset");
- btree_err_on(BSET_OFFSET(i) &&
- BSET_OFFSET(i) != offset,
- BTREE_ERR_WANT_RETRY, c, ca, b, i,
+ btree_err_on(BSET_OFFSET(i) && BSET_OFFSET(i) != offset,
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, i,
+ bset_wrong_sector_offset,
"bset at wrong sector offset");
if (!offset) {
/* XXX endianness */
btree_err_on(bp->seq != bn->keys.seq,
- BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ bset_bad_seq,
"incorrect sequence number (wrong btree node)");
}
btree_err_on(BTREE_NODE_ID(bn) != b->c.btree_id,
- BTREE_ERR_MUST_RETRY, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, i,
+ btree_node_bad_btree,
"incorrect btree id");
btree_err_on(BTREE_NODE_LEVEL(bn) != b->c.level,
- BTREE_ERR_MUST_RETRY, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, i,
+ btree_node_bad_level,
"incorrect level");
if (!write)
b->data->max_key = b->key.k.p;
}
- btree_err_on(bpos_cmp(b->data->min_key, bp->min_key),
- BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
+ btree_err_on(!bpos_eq(b->data->min_key, bp->min_key),
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ btree_node_bad_min_key,
"incorrect min_key: got %s should be %s",
(printbuf_reset(&buf1),
bch2_bpos_to_text(&buf1, bn->min_key), buf1.buf),
bch2_bpos_to_text(&buf2, bp->min_key), buf2.buf));
}
- btree_err_on(bpos_cmp(bn->max_key, b->key.k.p),
- BTREE_ERR_MUST_RETRY, c, ca, b, i,
+ btree_err_on(!bpos_eq(bn->max_key, b->key.k.p),
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, i,
+ btree_node_bad_max_key,
"incorrect max key %s",
(printbuf_reset(&buf1),
bch2_bpos_to_text(&buf1, bn->max_key), buf1.buf));
compat_btree_node(b->c.level, b->c.btree_id, version,
BSET_BIG_ENDIAN(i), write, bn);
- err = bch2_bkey_format_validate(&bn->format);
- btree_err_on(err,
- BTREE_ERR_FATAL, c, ca, b, i,
- "invalid bkey format: %s", err);
+ btree_err_on(bch2_bkey_format_invalid(c, &bn->format, write, &buf1),
+ -BCH_ERR_btree_node_read_err_bad_node,
+ c, ca, b, i,
+ btree_node_bad_format,
+ "invalid bkey format: %s\n %s", buf1.buf,
+ (printbuf_reset(&buf2),
+ bch2_bkey_format_to_text(&buf2, &bn->format), buf2.buf));
+ printbuf_reset(&buf1);
compat_bformat(b->c.level, b->c.btree_id, version,
BSET_BIG_ENDIAN(i), write,
struct printbuf *err)
{
return __bch2_bkey_invalid(c, k, btree_node_type(b), READ, err) ?:
- (!updated_range ? bch2_bkey_in_btree_node(b, k, err) : 0) ?:
+ (!updated_range ? bch2_bkey_in_btree_node(c, b, k, err) : 0) ?:
(rw == WRITE ? bch2_bkey_val_invalid(c, k, READ, err) : 0);
}
+static bool __bkey_valid(struct bch_fs *c, struct btree *b,
+ struct bset *i, struct bkey_packed *k)
+{
+ if (bkey_p_next(k) > vstruct_last(i))
+ return false;
+
+ if (k->format > KEY_FORMAT_CURRENT)
+ return false;
+
+ struct printbuf buf = PRINTBUF;
+ struct bkey tmp;
+ struct bkey_s u = __bkey_disassemble(b, k, &tmp);
+ bool ret = __bch2_bkey_invalid(c, u.s_c, btree_node_type(b), READ, &buf);
+ printbuf_exit(&buf);
+ return ret;
+}
+
static int validate_bset_keys(struct bch_fs *c, struct btree *b,
- struct bset *i, unsigned *whiteout_u64s,
- int write, bool have_retry)
+ struct bset *i, int write,
+ bool have_retry, bool *saw_error)
{
unsigned version = le16_to_cpu(i->version);
struct bkey_packed *k, *prev = NULL;
k != vstruct_last(i);) {
struct bkey_s u;
struct bkey tmp;
+ unsigned next_good_key;
- if (btree_err_on(bkey_next(k) > vstruct_last(i),
- BTREE_ERR_FIXABLE, c, NULL, b, i,
+ if (btree_err_on(bkey_p_next(k) > vstruct_last(i),
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bkey_past_bset_end,
"key extends past end of bset")) {
i->u64s = cpu_to_le16((u64 *) k - i->_data);
break;
}
if (btree_err_on(k->format > KEY_FORMAT_CURRENT,
- BTREE_ERR_FIXABLE, c, NULL, b, i,
- "invalid bkey format %u", k->format)) {
- i->u64s = cpu_to_le16(le16_to_cpu(i->u64s) - k->u64s);
- memmove_u64s_down(k, bkey_next(k),
- (u64 *) vstruct_end(i) - (u64 *) k);
- continue;
- }
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bkey_bad_format,
+ "invalid bkey format %u", k->format))
+ goto drop_this_key;
/* XXX: validate k->u64s */
if (!write)
printbuf_reset(&buf);
if (bset_key_invalid(c, b, u.s_c, updated_range, write, &buf)) {
printbuf_reset(&buf);
- pr_buf(&buf, "invalid bkey: ");
bset_key_invalid(c, b, u.s_c, updated_range, write, &buf);
- pr_buf(&buf, "\n ");
+ prt_printf(&buf, "\n ");
bch2_bkey_val_to_text(&buf, c, u.s_c);
- btree_err(BTREE_ERR_FIXABLE, c, NULL, b, i, "%s", buf.buf);
-
- i->u64s = cpu_to_le16(le16_to_cpu(i->u64s) - k->u64s);
- memmove_u64s_down(k, bkey_next(k),
- (u64 *) vstruct_end(i) - (u64 *) k);
- continue;
+ btree_err(-BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bad_bkey,
+ "invalid bkey: %s", buf.buf);
+ goto drop_this_key;
}
if (write)
struct bkey up = bkey_unpack_key(b, prev);
printbuf_reset(&buf);
- pr_buf(&buf, "keys out of order: ");
+ prt_printf(&buf, "keys out of order: ");
bch2_bkey_to_text(&buf, &up);
- pr_buf(&buf, " > ");
+ prt_printf(&buf, " > ");
bch2_bkey_to_text(&buf, u.k);
- bch2_dump_bset(c, b, i, 0);
-
- if (btree_err(BTREE_ERR_FIXABLE, c, NULL, b, i, "%s", buf.buf)) {
- i->u64s = cpu_to_le16(le16_to_cpu(i->u64s) - k->u64s);
- memmove_u64s_down(k, bkey_next(k),
- (u64 *) vstruct_end(i) - (u64 *) k);
- continue;
- }
+ if (btree_err(-BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bkey_out_of_order,
+ "%s", buf.buf))
+ goto drop_this_key;
}
prev = k;
- k = bkey_next(k);
+ k = bkey_p_next(k);
+ continue;
+drop_this_key:
+ next_good_key = k->u64s;
+
+ if (!next_good_key ||
+ (BSET_BIG_ENDIAN(i) == CPU_BIG_ENDIAN &&
+ version >= bcachefs_metadata_version_snapshot)) {
+ /*
+ * only do scanning if bch2_bkey_compat() has nothing to
+ * do
+ */
+
+ if (!__bkey_valid(c, b, i, (void *) ((u64 *) k + next_good_key))) {
+ for (next_good_key = 1;
+ next_good_key < (u64 *) vstruct_last(i) - (u64 *) k;
+ next_good_key++)
+ if (__bkey_valid(c, b, i, (void *) ((u64 *) k + next_good_key)))
+ goto got_good_key;
+
+ }
+
+ /*
+ * didn't find a good key, have to truncate the rest of
+ * the bset
+ */
+ next_good_key = (u64 *) vstruct_last(i) - (u64 *) k;
+ }
+got_good_key:
+ le16_add_cpu(&i->u64s, -next_good_key);
+ memmove_u64s_down(k, bkey_p_next(k), (u64 *) vstruct_end(i) - (u64 *) k);
}
fsck_err:
printbuf_exit(&buf);
}
int bch2_btree_node_read_done(struct bch_fs *c, struct bch_dev *ca,
- struct btree *b, bool have_retry)
+ struct btree *b, bool have_retry, bool *saw_error)
{
struct btree_node_entry *bne;
struct sort_iter *iter;
struct btree_node *sorted;
struct bkey_packed *k;
- struct bch_extent_ptr *ptr;
struct bset *i;
bool used_mempool, blacklisted;
bool updated_range = b->key.k.type == KEY_TYPE_btree_ptr_v2 &&
BTREE_PTR_RANGE_UPDATED(&bkey_i_to_btree_ptr_v2(&b->key)->v);
unsigned u64s;
- unsigned blacklisted_written, nonblacklisted_written = 0;
unsigned ptr_written = btree_ptr_sectors_written(&b->key);
struct printbuf buf = PRINTBUF;
- int ret, retry_read = 0, write = READ;
+ int ret = 0, retry_read = 0, write = READ;
+ u64 start_time = local_clock();
b->version_ondisk = U16_MAX;
+ /* We might get called multiple times on read retry: */
+ b->written = 0;
- iter = mempool_alloc(&c->fill_iter, GFP_NOIO);
- sort_iter_init(iter, b);
- iter->size = (btree_blocks(c) + 1) * 2;
+ iter = mempool_alloc(&c->fill_iter, GFP_NOFS);
+ sort_iter_init(iter, b, (btree_blocks(c) + 1) * 2);
if (bch2_meta_read_fault("btree"))
- btree_err(BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
+ btree_err(-BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ btree_node_fault_injected,
"dynamic fault");
btree_err_on(le64_to_cpu(b->data->magic) != bset_magic(c),
- BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ btree_node_bad_magic,
"bad magic: want %llx, got %llx",
bset_magic(c), le64_to_cpu(b->data->magic));
- btree_err_on(!b->data->keys.seq,
- BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
- "bad btree header: seq 0");
-
if (b->key.k.type == KEY_TYPE_btree_ptr_v2) {
struct bch_btree_ptr_v2 *bp =
&bkey_i_to_btree_ptr_v2(&b->key)->v;
+ bch2_bpos_to_text(&buf, b->data->min_key);
+ prt_str(&buf, "-");
+ bch2_bpos_to_text(&buf, b->data->max_key);
+
btree_err_on(b->data->keys.seq != bp->seq,
- BTREE_ERR_MUST_RETRY, c, ca, b, NULL,
- "got wrong btree node (seq %llx want %llx)",
- b->data->keys.seq, bp->seq);
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ btree_node_bad_seq,
+ "got wrong btree node (want %llx got %llx)\n"
+ "got btree %s level %llu pos %s",
+ bp->seq, b->data->keys.seq,
+ bch2_btree_id_str(BTREE_NODE_ID(b->data)),
+ BTREE_NODE_LEVEL(b->data),
+ buf.buf);
+ } else {
+ btree_err_on(!b->data->keys.seq,
+ -BCH_ERR_btree_node_read_err_must_retry,
+ c, ca, b, NULL,
+ btree_node_bad_seq,
+ "bad btree header: seq 0");
}
while (b->written < (ptr_written ?: btree_sectors(c))) {
- unsigned sectors, whiteout_u64s = 0;
+ unsigned sectors;
struct nonce nonce;
- struct bch_csum csum;
bool first = !b->written;
+ bool csum_bad;
if (!b->written) {
i = &b->data->keys;
btree_err_on(!bch2_checksum_type_valid(c, BSET_CSUM_TYPE(i)),
- BTREE_ERR_WANT_RETRY, c, ca, b, i,
- "unknown checksum type %llu",
- BSET_CSUM_TYPE(i));
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, i,
+ bset_unknown_csum,
+ "unknown checksum type %llu", BSET_CSUM_TYPE(i));
nonce = btree_nonce(i, b->written << 9);
- csum = csum_vstruct(c, BSET_CSUM_TYPE(i), nonce, b->data);
- btree_err_on(bch2_crc_cmp(csum, b->data->csum),
- BTREE_ERR_WANT_RETRY, c, ca, b, i,
- "invalid checksum");
+ struct bch_csum csum = csum_vstruct(c, BSET_CSUM_TYPE(i), nonce, b->data);
+ csum_bad = bch2_crc_cmp(b->data->csum, csum);
+ if (csum_bad)
+ bch2_io_error(ca, BCH_MEMBER_ERROR_checksum);
+
+ btree_err_on(csum_bad,
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, i,
+ bset_bad_csum,
+ "%s",
+ (printbuf_reset(&buf),
+ bch2_csum_err_msg(&buf, BSET_CSUM_TYPE(i), b->data->csum, csum),
+ buf.buf));
ret = bset_encrypt(c, i, b->written << 9);
if (bch2_fs_fatal_err_on(ret, c,
btree_err_on(btree_node_type_is_extents(btree_node_type(b)) &&
!BTREE_NODE_NEW_EXTENT_OVERWRITE(b->data),
- BTREE_ERR_FATAL, c, NULL, b, NULL,
+ -BCH_ERR_btree_node_read_err_incompatible,
+ c, NULL, b, NULL,
+ btree_node_unsupported_version,
"btree node does not have NEW_EXTENT_OVERWRITE set");
sectors = vstruct_sectors(b->data, c->block_bits);
break;
btree_err_on(!bch2_checksum_type_valid(c, BSET_CSUM_TYPE(i)),
- BTREE_ERR_WANT_RETRY, c, ca, b, i,
- "unknown checksum type %llu",
- BSET_CSUM_TYPE(i));
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, i,
+ bset_unknown_csum,
+ "unknown checksum type %llu", BSET_CSUM_TYPE(i));
nonce = btree_nonce(i, b->written << 9);
- csum = csum_vstruct(c, BSET_CSUM_TYPE(i), nonce, bne);
-
- btree_err_on(bch2_crc_cmp(csum, bne->csum),
- BTREE_ERR_WANT_RETRY, c, ca, b, i,
- "invalid checksum");
+ struct bch_csum csum = csum_vstruct(c, BSET_CSUM_TYPE(i), nonce, bne);
+ csum_bad = bch2_crc_cmp(bne->csum, csum);
+ if (csum_bad)
+ bch2_io_error(ca, BCH_MEMBER_ERROR_checksum);
+
+ btree_err_on(csum_bad,
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, i,
+ bset_bad_csum,
+ "%s",
+ (printbuf_reset(&buf),
+ bch2_csum_err_msg(&buf, BSET_CSUM_TYPE(i), bne->csum, csum),
+ buf.buf));
ret = bset_encrypt(c, i, b->written << 9);
if (bch2_fs_fatal_err_on(ret, c,
le16_to_cpu(i->version));
ret = validate_bset(c, ca, b, i, b->written, sectors,
- READ, have_retry);
+ READ, have_retry, saw_error);
if (ret)
goto fsck_err;
if (!b->written)
btree_node_set_format(b, b->data->format);
- ret = validate_bset_keys(c, b, i, &whiteout_u64s,
- READ, have_retry);
+ ret = validate_bset_keys(c, b, i, READ, have_retry, saw_error);
if (ret)
goto fsck_err;
true);
btree_err_on(blacklisted && first,
- BTREE_ERR_FIXABLE, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, ca, b, i,
+ bset_blacklisted_journal_seq,
"first btree node bset has blacklisted journal seq (%llu)",
le64_to_cpu(i->journal_seq));
btree_err_on(blacklisted && ptr_written,
- BTREE_ERR_FIXABLE, c, ca, b, i,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, ca, b, i,
+ first_bset_blacklisted_journal_seq,
"found blacklisted bset (journal seq %llu) in btree node at offset %u-%u/%u",
le64_to_cpu(i->journal_seq),
b->written, b->written + sectors, ptr_written);
if (blacklisted && !first)
continue;
- sort_iter_add(iter, i->start,
- vstruct_idx(i, whiteout_u64s));
-
sort_iter_add(iter,
- vstruct_idx(i, whiteout_u64s),
+ vstruct_idx(i, 0),
vstruct_last(i));
-
- nonblacklisted_written = b->written;
}
if (ptr_written) {
btree_err_on(b->written < ptr_written,
- BTREE_ERR_WANT_RETRY, c, ca, b, NULL,
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, NULL,
+ btree_node_data_missing,
"btree node data missing: expected %u sectors, found %u",
ptr_written, b->written);
} else {
for (bne = write_block(b);
- bset_byte_offset(b, bne) < btree_bytes(c);
+ bset_byte_offset(b, bne) < btree_buf_bytes(b);
bne = (void *) bne + block_bytes(c))
btree_err_on(bne->keys.seq == b->data->keys.seq &&
!bch2_journal_seq_is_blacklisted(c,
le64_to_cpu(bne->keys.journal_seq),
true),
- BTREE_ERR_WANT_RETRY, c, ca, b, NULL,
+ -BCH_ERR_btree_node_read_err_want_retry,
+ c, ca, b, NULL,
+ btree_node_bset_after_end,
"found bset signature after last bset");
-
- /*
- * Blacklisted bsets are those that were written after the most recent
- * (flush) journal write. Since there wasn't a flush, they may not have
- * made it to all devices - which means we shouldn't write new bsets
- * after them, as that could leave a gap and then reads from that device
- * wouldn't find all the bsets in that btree node - which means it's
- * important that we start writing new bsets after the most recent _non_
- * blacklisted bset:
- */
- blacklisted_written = b->written;
- b->written = nonblacklisted_written;
}
- sorted = btree_bounce_alloc(c, btree_bytes(c), &used_mempool);
+ sorted = btree_bounce_alloc(c, btree_buf_bytes(b), &used_mempool);
sorted->keys.u64s = 0;
set_btree_bset(b, b->set, &b->data->keys);
BUG_ON(b->nr.live_u64s != u64s);
- btree_bounce_free(c, btree_bytes(c), used_mempool, sorted);
+ btree_bounce_free(c, btree_buf_bytes(b), used_mempool, sorted);
if (updated_range)
bch2_btree_node_drop_keys_outside_node(b);
!bversion_cmp(u.k->version, MAX_VERSION))) {
printbuf_reset(&buf);
- pr_buf(&buf, "invalid bkey: ");
+ prt_printf(&buf, "invalid bkey: ");
bch2_bkey_val_invalid(c, u.s_c, READ, &buf);
- pr_buf(&buf, "\n ");
+ prt_printf(&buf, "\n ");
bch2_bkey_val_to_text(&buf, c, u.s_c);
- btree_err(BTREE_ERR_FIXABLE, c, NULL, b, i, "%s", buf.buf);
+ btree_err(-BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, i,
+ btree_node_bad_bkey,
+ "%s", buf.buf);
btree_keys_account_key_drop(&b->nr, 0, k);
i->u64s = cpu_to_le16(le16_to_cpu(i->u64s) - k->u64s);
- memmove_u64s_down(k, bkey_next(k),
+ memmove_u64s_down(k, bkey_p_next(k),
(u64 *) vstruct_end(i) - (u64 *) k);
set_btree_bset_end(b, b->set);
continue;
bp.v->mem_ptr = 0;
}
- k = bkey_next(k);
+ k = bkey_p_next(k);
}
bch2_bset_build_aux_tree(b, b->set, false);
btree_node_reset_sib_u64s(b);
bkey_for_each_ptr(bch2_bkey_ptrs(bkey_i_to_s(&b->key)), ptr) {
- struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+ struct bch_dev *ca2 = bch_dev_bkey_exists(c, ptr->dev);
- if (ca->mi.state != BCH_MEMBER_STATE_rw)
+ if (ca2->mi.state != BCH_MEMBER_STATE_rw)
set_btree_node_need_rewrite(b);
}
out:
mempool_free(iter, &c->fill_iter);
printbuf_exit(&buf);
+ time_stats_update(&c->times[BCH_TIME_btree_node_read_done], start_time);
return retry_read;
fsck_err:
- if (ret == BTREE_RETRY_READ) {
+ if (ret == -BCH_ERR_btree_node_read_err_want_retry ||
+ ret == -BCH_ERR_btree_node_read_err_must_retry)
retry_read = 1;
- } else {
- bch2_inconsistent_error(c);
+ else
set_btree_node_read_error(b);
- }
goto out;
}
bch_info(c, "retrying read");
ca = bch_dev_bkey_exists(c, rb->pick.ptr.dev);
rb->have_ioref = bch2_dev_get_ioref(ca, READ);
- bio_reset(bio);
- bio->bi_opf = REQ_OP_READ|REQ_SYNC|REQ_META;
+ bio_reset(bio, NULL, REQ_OP_READ|REQ_SYNC|REQ_META);
bio->bi_iter.bi_sector = rb->pick.ptr.offset;
- bio->bi_iter.bi_size = btree_bytes(c);
+ bio->bi_iter.bi_size = btree_buf_bytes(b);
if (rb->have_ioref) {
bio_set_dev(bio, ca->disk_sb.bdev);
}
start:
printbuf_reset(&buf);
- btree_pos_to_text(&buf, c, b);
- bch2_dev_io_err_on(bio->bi_status, ca, "btree read error %s for %s",
+ bch2_btree_pos_to_text(&buf, c, b);
+ bch2_dev_io_err_on(bio->bi_status, ca, BCH_MEMBER_ERROR_read,
+ "btree read error %s for %s",
bch2_blk_status_to_str(bio->bi_status), buf.buf);
if (rb->have_ioref)
percpu_ref_put(&ca->io_ref);
&failed, &rb->pick) > 0;
if (!bio->bi_status &&
- !bch2_btree_node_read_done(c, ca, b, can_retry)) {
+ !bch2_btree_node_read_done(c, ca, b, can_retry, &saw_error)) {
if (retry)
bch_info(c, "retry success");
break;
}
}
- bch2_time_stats_update(&c->times[BCH_TIME_btree_node_read],
+ time_stats_update(&c->times[BCH_TIME_btree_node_read],
rb->start_time);
bio_put(&rb->bio);
- printbuf_exit(&buf);
- if (saw_error && !btree_node_read_error(b))
+ if (saw_error && !btree_node_read_error(b)) {
+ printbuf_reset(&buf);
+ bch2_bpos_to_text(&buf, b->key.k.p);
+ bch_info(c, "%s: rewriting btree node at btree=%s level=%u %s due to error",
+ __func__, bch2_btree_id_str(b->c.btree_id), b->c.level, buf.buf);
+
bch2_btree_node_rewrite_async(c, b);
+ }
+ printbuf_exit(&buf);
clear_btree_node_read_in_flight(b);
wake_up_bit(&b->flags, BTREE_NODE_read_in_flight);
}
if (rb->have_ioref) {
struct bch_dev *ca = bch_dev_bkey_exists(c, rb->pick.ptr.dev);
+
bch2_latency_acct(ca, rb->start_time, READ);
}
unsigned nr;
void *buf[BCH_REPLICAS_MAX];
struct bio *bio[BCH_REPLICAS_MAX];
- int err[BCH_REPLICAS_MAX];
+ blk_status_t err[BCH_REPLICAS_MAX];
};
static unsigned btree_node_sectors_written(struct bch_fs *c, void *data)
return offset;
}
-static void btree_node_read_all_replicas_done(struct closure *cl)
+static CLOSURE_CALLBACK(btree_node_read_all_replicas_done)
{
- struct btree_node_read_all *ra =
- container_of(cl, struct btree_node_read_all, cl);
+ closure_type(ra, struct btree_node_read_all, cl);
struct bch_fs *c = ra->c;
struct btree *b = ra->b;
struct printbuf buf = PRINTBUF;
unsigned i, written = 0, written2 = 0;
__le64 seq = b->key.k.type == KEY_TYPE_btree_ptr_v2
? bkey_i_to_btree_ptr_v2(&b->key)->v.seq : 0;
+ bool _saw_error = false, *saw_error = &_saw_error;
for (i = 0; i < ra->nr; i++) {
struct btree_node *bn = ra->buf[i];
}
written2 = btree_node_sectors_written(c, ra->buf[i]);
- if (btree_err_on(written2 != written, BTREE_ERR_FIXABLE, c, NULL, b, NULL,
+ if (btree_err_on(written2 != written, -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, NULL,
+ btree_node_replicas_sectors_written_mismatch,
"btree node sectors written mismatch: %u != %u",
written, written2) ||
btree_err_on(btree_node_has_extra_bsets(c, written2, ra->buf[i]),
- BTREE_ERR_FIXABLE, c, NULL, b, NULL,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, NULL,
+ btree_node_bset_after_end,
"found bset signature after last bset") ||
btree_err_on(memcmp(ra->buf[best], ra->buf[i], written << 9),
- BTREE_ERR_FIXABLE, c, NULL, b, NULL,
+ -BCH_ERR_btree_node_read_err_fixable,
+ c, NULL, b, NULL,
+ btree_node_replicas_data_mismatch,
"btree node replicas content mismatch"))
dump_bset_maps = true;
sectors = vstruct_sectors(bne, c->block_bits);
}
- pr_buf(&buf, " %u-%u", offset, offset + sectors);
+ prt_printf(&buf, " %u-%u", offset, offset + sectors);
if (bne && bch2_journal_seq_is_blacklisted(c,
le64_to_cpu(bne->keys.journal_seq), false))
- pr_buf(&buf, "*");
+ prt_printf(&buf, "*");
offset += sectors;
}
bne = ra->buf[i] + (offset << 9);
if (bne->keys.seq == bn->keys.seq) {
if (!gap)
- pr_buf(&buf, " GAP");
+ prt_printf(&buf, " GAP");
gap = true;
sectors = vstruct_sectors(bne, c->block_bits);
- pr_buf(&buf, " %u-%u", offset, offset + sectors);
+ prt_printf(&buf, " %u-%u", offset, offset + sectors);
if (bch2_journal_seq_is_blacklisted(c,
le64_to_cpu(bne->keys.journal_seq), false))
- pr_buf(&buf, "*");
+ prt_printf(&buf, "*");
}
offset++;
}
}
if (best >= 0) {
- memcpy(b->data, ra->buf[best], btree_bytes(c));
- ret = bch2_btree_node_read_done(c, NULL, b, false);
+ memcpy(b->data, ra->buf[best], btree_buf_bytes(b));
+ ret = bch2_btree_node_read_done(c, NULL, b, false, saw_error);
} else {
ret = -1;
}
if (ret)
set_btree_node_read_error(b);
+ else if (*saw_error)
+ bch2_btree_node_rewrite_async(c, b);
for (i = 0; i < ra->nr; i++) {
mempool_free(ra->buf[i], &c->btree_bounce_pool);
if (rb->have_ioref) {
struct bch_dev *ca = bch_dev_bkey_exists(c, rb->pick.ptr.dev);
+
bch2_latency_acct(ca, rb->start_time, READ);
}
ra = kzalloc(sizeof(*ra), GFP_NOFS);
if (!ra)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_btree_node_read_all_replicas;
closure_init(&ra->cl, NULL);
ra->c = c;
for (i = 0; i < ra->nr; i++) {
ra->buf[i] = mempool_alloc(&c->btree_bounce_pool, GFP_NOFS);
- ra->bio[i] = bio_alloc_bioset(GFP_NOFS, buf_pages(ra->buf[i],
- btree_bytes(c)),
+ ra->bio[i] = bio_alloc_bioset(NULL,
+ buf_pages(ra->buf[i], btree_buf_bytes(b)),
+ REQ_OP_READ|REQ_SYNC|REQ_META,
+ GFP_NOFS,
&c->btree_bio);
}
rb->have_ioref = bch2_dev_get_ioref(ca, READ);
rb->idx = i;
rb->pick = pick;
- rb->bio.bi_opf = REQ_OP_READ|REQ_SYNC|REQ_META;
rb->bio.bi_iter.bi_sector = pick.ptr.offset;
rb->bio.bi_end_io = btree_node_read_all_replicas_endio;
- bch2_bio_map(&rb->bio, ra->buf[i], btree_bytes(c));
+ bch2_bio_map(&rb->bio, ra->buf[i], btree_buf_bytes(b));
if (rb->have_ioref) {
this_cpu_add(ca->io_done->sectors[READ][BCH_DATA_btree],
if (sync) {
closure_sync(&ra->cl);
- btree_node_read_all_replicas_done(&ra->cl);
+ btree_node_read_all_replicas_done(&ra->cl.work);
} else {
continue_at(&ra->cl, btree_node_read_all_replicas_done,
c->io_complete_wq);
return 0;
}
-void bch2_btree_node_read(struct bch_fs *c, struct btree *b,
+void bch2_btree_node_read(struct btree_trans *trans, struct btree *b,
bool sync)
{
+ struct bch_fs *c = trans->c;
struct extent_ptr_decoded pick;
struct btree_read_bio *rb;
struct bch_dev *ca;
struct bio *bio;
- struct printbuf buf = PRINTBUF;
int ret;
- btree_pos_to_text(&buf, c, b);
- trace_btree_read(c, b);
+ trace_and_count(c, btree_node_read, trans, b);
if (bch2_verify_all_btree_replicas &&
!btree_node_read_all_replicas(c, b, sync))
- goto out;
+ return;
ret = bch2_bkey_pick_read_device(c, bkey_i_to_s_c(&b->key),
NULL, &pick);
- if (bch2_fs_fatal_err_on(ret <= 0, c,
- "btree node read error: no device to read from\n"
- " at %s", buf.buf)) {
+
+ if (ret <= 0) {
+ struct printbuf buf = PRINTBUF;
+
+ prt_str(&buf, "btree node read error: no device to read from\n at ");
+ bch2_btree_pos_to_text(&buf, c, b);
+ bch_err(c, "%s", buf.buf);
+
+ if (c->recovery_passes_explicit & BIT_ULL(BCH_RECOVERY_PASS_check_topology) &&
+ c->curr_recovery_pass > BCH_RECOVERY_PASS_check_topology)
+ bch2_fatal_error(c);
+
set_btree_node_read_error(b);
- goto out;
+ clear_btree_node_read_in_flight(b);
+ wake_up_bit(&b->flags, BTREE_NODE_read_in_flight);
+ printbuf_exit(&buf);
+ return;
}
ca = bch_dev_bkey_exists(c, pick.ptr.dev);
- bio = bio_alloc_bioset(GFP_NOIO, buf_pages(b->data,
- btree_bytes(c)),
+ bio = bio_alloc_bioset(NULL,
+ buf_pages(b->data, btree_buf_bytes(b)),
+ REQ_OP_READ|REQ_SYNC|REQ_META,
+ GFP_NOFS,
&c->btree_bio);
rb = container_of(bio, struct btree_read_bio, bio);
rb->c = c;
rb->have_ioref = bch2_dev_get_ioref(ca, READ);
rb->pick = pick;
INIT_WORK(&rb->work, btree_node_read_work);
- bio->bi_opf = REQ_OP_READ|REQ_SYNC|REQ_META;
bio->bi_iter.bi_sector = pick.ptr.offset;
bio->bi_end_io = btree_node_read_endio;
- bch2_bio_map(bio, b->data, btree_bytes(c));
+ bch2_bio_map(bio, b->data, btree_buf_bytes(b));
if (rb->have_ioref) {
this_cpu_add(ca->io_done->sectors[READ][BCH_DATA_btree],
if (sync) {
submit_bio_wait(bio);
-
+ bch2_latency_acct(ca, rb->start_time, READ);
btree_node_read_work(&rb->work);
} else {
submit_bio(bio);
else
queue_work(c->io_complete_wq, &rb->work);
}
-out:
- printbuf_exit(&buf);
}
-int bch2_btree_root_read(struct bch_fs *c, enum btree_id id,
- const struct bkey_i *k, unsigned level)
+static int __bch2_btree_root_read(struct btree_trans *trans, enum btree_id id,
+ const struct bkey_i *k, unsigned level)
{
+ struct bch_fs *c = trans->c;
struct closure cl;
struct btree *b;
int ret;
closure_init_stack(&cl);
do {
- ret = bch2_btree_cache_cannibalize_lock(c, &cl);
+ ret = bch2_btree_cache_cannibalize_lock(trans, &cl);
closure_sync(&cl);
} while (ret);
- b = bch2_btree_node_mem_alloc(c, level != 0);
- bch2_btree_cache_cannibalize_unlock(c);
+ b = bch2_btree_node_mem_alloc(trans, level != 0);
+ bch2_btree_cache_cannibalize_unlock(trans);
BUG_ON(IS_ERR(b));
set_btree_node_read_in_flight(b);
- bch2_btree_node_read(c, b, true);
+ bch2_btree_node_read(trans, b, true);
if (btree_node_read_error(b)) {
bch2_btree_node_hash_remove(&c->btree_cache, b);
list_move(&b->list, &c->btree_cache.freeable);
mutex_unlock(&c->btree_cache.lock);
- ret = -EIO;
+ ret = -BCH_ERR_btree_node_read_error;
goto err;
}
return ret;
}
-void bch2_btree_complete_write(struct bch_fs *c, struct btree *b,
- struct btree_write *w)
+int bch2_btree_root_read(struct bch_fs *c, enum btree_id id,
+ const struct bkey_i *k, unsigned level)
+{
+ return bch2_trans_run(c, __bch2_btree_root_read(trans, id, k, level));
+}
+
+static void bch2_btree_complete_write(struct bch_fs *c, struct btree *b,
+ struct btree_write *w)
{
unsigned long old, new, v = READ_ONCE(b->will_make_reachable);
{
struct btree_write *w = btree_prev_write(b);
unsigned long old, new, v;
+ unsigned type = 0;
bch2_btree_complete_write(c, b, w);
new |= (1U << BTREE_NODE_write_in_flight_inner);
new |= (1U << BTREE_NODE_just_written);
new ^= (1U << BTREE_NODE_write_idx);
+
+ type = new & BTREE_WRITE_TYPE_MASK;
+ new &= ~BTREE_WRITE_TYPE_MASK;
} else {
new &= ~(1U << BTREE_NODE_write_in_flight);
new &= ~(1U << BTREE_NODE_write_in_flight_inner);
} while ((v = cmpxchg(&b->flags, old, new)) != old);
if (new & (1U << BTREE_NODE_write_in_flight))
- __bch2_btree_node_write(c, b, BTREE_WRITE_ALREADY_STARTED);
+ __bch2_btree_node_write(c, b, BTREE_WRITE_ALREADY_STARTED|type);
else
wake_up_bit(&b->flags, BTREE_NODE_write_in_flight);
}
static void btree_node_write_done(struct bch_fs *c, struct btree *b)
{
- six_lock_read(&b->c.lock, NULL, NULL);
+ struct btree_trans *trans = bch2_trans_get(c);
+
+ btree_node_lock_nopath_nofail(trans, &b->c, SIX_LOCK_read);
__btree_node_write_done(c, b);
six_unlock_read(&b->c.lock);
+
+ bch2_trans_put(trans);
}
static void btree_node_write_work(struct work_struct *work)
struct bch_fs *c = wbio->wbio.c;
struct btree *b = wbio->wbio.bio.bi_private;
struct bch_extent_ptr *ptr;
- int ret;
+ int ret = 0;
btree_bounce_free(c,
wbio->data_bytes,
bch2_bkey_drop_ptrs(bkey_i_to_s(&wbio->key), ptr,
bch2_dev_list_has_dev(wbio->wbio.failed, ptr->dev));
- if (!bch2_bkey_nr_ptrs(bkey_i_to_s_c(&wbio->key)))
+ if (!bch2_bkey_nr_ptrs(bkey_i_to_s_c(&wbio->key))) {
+ ret = -BCH_ERR_btree_node_write_all_failed;
goto err;
+ }
if (wbio->wbio.first_btree_write) {
if (wbio->wbio.failed.nr) {
}
} else {
ret = bch2_trans_do(c, NULL, NULL, 0,
- bch2_btree_node_update_key_get_iter(&trans, b, &wbio->key,
- !wbio->wbio.failed.nr));
+ bch2_btree_node_update_key_get_iter(trans, b, &wbio->key,
+ BCH_WATERMARK_reclaim|
+ BCH_TRANS_COMMIT_journal_reclaim|
+ BCH_TRANS_COMMIT_no_enospc|
+ BCH_TRANS_COMMIT_no_check_rw,
+ !wbio->wbio.failed.nr));
if (ret)
goto err;
}
return;
err:
set_btree_node_noevict(b);
- bch2_fs_fatal_error(c, "fatal error writing btree node");
+ if (!bch2_err_matches(ret, EROFS))
+ bch2_fs_fatal_error(c, "fatal error writing btree node: %s", bch2_err_str(ret));
goto out;
}
if (wbio->have_ioref)
bch2_latency_acct(ca, wbio->submit_time, WRITE);
- if (bch2_dev_io_err_on(bio->bi_status, ca, "btree write error: %s",
+ if (bch2_dev_io_err_on(bio->bi_status, ca, BCH_MEMBER_ERROR_write,
+ "btree write error: %s",
bch2_blk_status_to_str(bio->bi_status)) ||
bch2_meta_write_fault("btree")) {
spin_lock_irqsave(&c->btree_write_error_lock, flags);
static int validate_bset_for_write(struct bch_fs *c, struct btree *b,
struct bset *i, unsigned sectors)
{
- unsigned whiteout_u64s = 0;
struct printbuf buf = PRINTBUF;
+ bool saw_error;
int ret;
ret = bch2_bkey_invalid(c, bkey_i_to_s_c(&b->key),
if (ret)
return ret;
- ret = validate_bset_keys(c, b, i, &whiteout_u64s, WRITE, false) ?:
- validate_bset(c, NULL, b, i, b->written, sectors, WRITE, false);
+ ret = validate_bset_keys(c, b, i, WRITE, false, &saw_error) ?:
+ validate_bset(c, NULL, b, i, b->written, sectors, WRITE, false, &saw_error);
if (ret) {
bch2_inconsistent_error(c);
dump_stack();
static void btree_write_submit(struct work_struct *work)
{
struct btree_write_bio *wbio = container_of(work, struct btree_write_bio, work);
- struct bch_extent_ptr *ptr;
- __BKEY_PADDED(k, BKEY_BTREE_PTR_VAL_U64s_MAX) tmp;
+ BKEY_PADDED_ONSTACK(k, BKEY_BTREE_PTR_VAL_U64s_MAX) tmp;
bkey_copy(&tmp.k, &wbio->key);
bkey_for_each_ptr(bch2_bkey_ptrs(bkey_i_to_s(&tmp.k)), ptr)
ptr->offset += wbio->sector_offset;
- bch2_submit_wbio_replicas(&wbio->wbio, wbio->wbio.c, BCH_DATA_btree, &tmp.k);
+ bch2_submit_wbio_replicas(&wbio->wbio, wbio->wbio.c, BCH_DATA_btree,
+ &tmp.k, false);
}
void __bch2_btree_node_write(struct bch_fs *c, struct btree *b, unsigned flags)
struct bset *i;
struct btree_node *bn = NULL;
struct btree_node_entry *bne = NULL;
- struct sort_iter sort_iter;
+ struct sort_iter_stack sort_iter;
struct nonce nonce;
unsigned bytes_to_write, sectors_to_write, bytes, u64s;
u64 seq = 0;
bool used_mempool;
unsigned long old, new;
bool validate_before_checksum = false;
+ enum btree_write_type type = flags & BTREE_WRITE_TYPE_MASK;
void *data;
int ret;
if (old & (1 << BTREE_NODE_write_in_flight))
return;
+ if (flags & BTREE_WRITE_ONLY_IF_NEED)
+ type = new & BTREE_WRITE_TYPE_MASK;
+ new &= ~BTREE_WRITE_TYPE_MASK;
+
new &= ~(1 << BTREE_NODE_dirty);
new &= ~(1 << BTREE_NODE_need_write);
new |= (1 << BTREE_NODE_write_in_flight);
if (new & (1U << BTREE_NODE_need_write))
return;
do_write:
+ BUG_ON((type == BTREE_WRITE_initial) != (b->written == 0));
+
atomic_dec(&c->btree_cache.dirty);
BUG_ON(btree_node_fake(b));
bch2_sort_whiteouts(c, b);
- sort_iter_init(&sort_iter, b);
+ sort_iter_stack_init(&sort_iter, b);
bytes = !b->written
? sizeof(struct btree_node)
continue;
bytes += le16_to_cpu(i->u64s) * sizeof(u64);
- sort_iter_add(&sort_iter,
+ sort_iter_add(&sort_iter.iter,
btree_bkey_first(b, t),
btree_bkey_last(b, t));
seq = max(seq, le64_to_cpu(i->journal_seq));
i->journal_seq = cpu_to_le64(seq);
i->u64s = 0;
- sort_iter_add(&sort_iter,
- unwritten_whiteouts_start(c, b),
- unwritten_whiteouts_end(c, b));
+ sort_iter_add(&sort_iter.iter,
+ unwritten_whiteouts_start(b),
+ unwritten_whiteouts_end(b));
SET_BSET_SEPARATE_WHITEOUTS(i, false);
b->whiteout_u64s = 0;
- u64s = bch2_sort_keys(i->start, &sort_iter, false);
+ u64s = bch2_sort_keys(i->start, &sort_iter.iter, false);
le16_add_cpu(&i->u64s, u64s);
+ BUG_ON(!b->written && i->u64s != b->data->keys.u64s);
+
set_needs_whiteout(i, false);
/* do we have data to write? */
bytes_to_write = vstruct_end(i) - data;
sectors_to_write = round_up(bytes_to_write, block_bytes(c)) >> 9;
+ if (!b->written &&
+ b->key.k.type == KEY_TYPE_btree_ptr_v2)
+ BUG_ON(btree_ptr_sectors_written(&b->key) != sectors_to_write);
+
memset(data + bytes_to_write, 0,
(sectors_to_write << 9) - bytes_to_write);
BUG_ON(BSET_BIG_ENDIAN(i) != CPU_BIG_ENDIAN);
BUG_ON(i->seq != b->data->keys.seq);
- i->version = c->sb.version < bcachefs_metadata_version_bkey_renumber
- ? cpu_to_le16(BCH_BSET_VERSION_OLD)
- : cpu_to_le16(c->sb.version);
+ i->version = cpu_to_le16(c->sb.version);
SET_BSET_OFFSET(i, b->written);
SET_BSET_CSUM_TYPE(i, bch2_meta_checksum_type(c));
c->opts.nochanges)
goto err;
- trace_btree_write(b, bytes_to_write, sectors_to_write);
+ trace_and_count(c, btree_node_write, b, bytes_to_write, sectors_to_write);
- wbio = container_of(bio_alloc_bioset(GFP_NOIO,
+ wbio = container_of(bio_alloc_bioset(NULL,
buf_pages(data, sectors_to_write << 9),
+ REQ_OP_WRITE|REQ_META,
+ GFP_NOFS,
&c->btree_bio),
struct btree_write_bio, wbio.bio);
wbio_init(&wbio->wbio.bio);
wbio->wbio.c = c;
wbio->wbio.used_mempool = used_mempool;
wbio->wbio.first_btree_write = !b->written;
- wbio->wbio.bio.bi_opf = REQ_OP_WRITE|REQ_META;
wbio->wbio.bio.bi_end_io = btree_node_write_endio;
wbio->wbio.bio.bi_private = b;
b->written += sectors_to_write;
- if (wbio->wbio.first_btree_write &&
- b->key.k.type == KEY_TYPE_btree_ptr_v2)
- bkey_i_to_btree_ptr_v2(&b->key)->v.sectors_written =
- cpu_to_le16(b->written);
-
if (wbio->key.k.type == KEY_TYPE_btree_ptr_v2)
bkey_i_to_btree_ptr_v2(&wbio->key)->v.sectors_written =
cpu_to_le16(b->written);
- atomic64_inc(&c->btree_writes_nr);
- atomic64_add(sectors_to_write, &c->btree_writes_sectors);
+ atomic64_inc(&c->btree_write_stats[type].nr);
+ atomic64_add(bytes_to_write, &c->btree_write_stats[type].bytes);
INIT_WORK(&wbio->work, btree_write_submit);
queue_work(c->io_complete_wq, &wbio->work);
return;
err:
set_btree_node_noevict(b);
- if (!b->written &&
- b->key.k.type == KEY_TYPE_btree_ptr_v2)
- bkey_i_to_btree_ptr_v2(&b->key)->v.sectors_written =
- cpu_to_le16(sectors_to_write);
b->written += sectors_to_write;
nowrite:
btree_bounce_free(c, bytes, used_mempool, data);
bne = want_new_bset(c, b);
if (bne)
- bch2_bset_init_next(c, b, bne);
+ bch2_bset_init_next(b, bne);
bch2_btree_build_aux_trees(b);
{
return __bch2_btree_flush_all(c, BTREE_NODE_write_in_flight);
}
+
+static const char * const bch2_btree_write_types[] = {
+#define x(t, n) [n] = #t,
+ BCH_BTREE_WRITE_TYPES()
+ NULL
+};
+
+void bch2_btree_write_stats_to_text(struct printbuf *out, struct bch_fs *c)
+{
+ printbuf_tabstop_push(out, 20);
+ printbuf_tabstop_push(out, 10);
+
+ prt_tab(out);
+ prt_str(out, "nr");
+ prt_tab(out);
+ prt_str(out, "size");
+ prt_newline(out);
+
+ for (unsigned i = 0; i < BTREE_WRITE_TYPE_NR; i++) {
+ u64 nr = atomic64_read(&c->btree_write_stats[i].nr);
+ u64 bytes = atomic64_read(&c->btree_write_stats[i].bytes);
+
+ prt_printf(out, "%s:", bch2_btree_write_types[i]);
+ prt_tab(out);
+ prt_u64(out, nr);
+ prt_tab(out);
+ prt_human_readable_u64(out, nr ? div64_u64(bytes, nr) : 0);
+ prt_newline(out);
+ }
+}
projects / bcachefs-tools-debian / blobdiff