#include "alloc_foreground.h"
#include "btree_io.h"
#include "btree_update_interior.h"
+#include "btree_write_buffer.h"
#include "buckets.h"
#include "checksum.h"
#include "disk_groups.h"
#include "error.h"
-#include "io.h"
#include "journal.h"
#include "journal_io.h"
#include "journal_reclaim.h"
#include "journal_seq_blacklist.h"
#include "replicas.h"
-
-#include <trace/events/bcachefs.h>
+#include "sb-clean.h"
+#include "trace.h"
static struct nonce journal_nonce(const struct jset *jset)
{
journal_entry_radix_idx(c, le64_to_cpu(j->seq)),
GFP_KERNEL);
if (!_i)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_journal_entry_add;
/*
* Duplicate journal entries? If so we want the one that didn't have a
if (!dup->csum_good)
goto replace;
- fsck_err(c, "found duplicate but non identical journal entries (seq %llu)",
+ fsck_err(c, journal_entry_replicas_data_mismatch,
+ "found duplicate but non identical journal entries (seq %llu)",
le64_to_cpu(j->seq));
i = dup;
goto found;
replace:
i = kvpmalloc(offsetof(struct journal_replay, j) + bytes, GFP_KERNEL);
if (!i)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_journal_entry_add;
i->nr_ptrs = 0;
i->csum_good = entry_ptr.csum_good;
i->ignore = false;
- memcpy(&i->j, j, bytes);
+ unsafe_memcpy(&i->j, j, bytes, "embedded variable length struct");
i->ptrs[i->nr_ptrs++] = entry_ptr;
if (dup) {
#define JOURNAL_ENTRY_BAD 7
static void journal_entry_err_msg(struct printbuf *out,
+ u32 version,
struct jset *jset,
struct jset_entry *entry)
{
- prt_str(out, "invalid journal entry ");
- if (entry)
- prt_printf(out, "%s ", bch2_jset_entry_types[entry->type]);
-
- if (!jset)
- prt_printf(out, "in superblock");
- else if (!entry)
- prt_printf(out, "at seq %llu", le64_to_cpu(jset->seq));
- else
- prt_printf(out, "at offset %zi/%u seq %llu",
- (u64 *) entry - jset->_data,
- le32_to_cpu(jset->u64s),
- le64_to_cpu(jset->seq));
+ prt_str(out, "invalid journal entry, version=");
+ bch2_version_to_text(out, version);
+
+ if (entry) {
+ prt_str(out, " type=");
+ prt_str(out, bch2_jset_entry_types[entry->type]);
+ }
+
+ if (!jset) {
+ prt_printf(out, " in superblock");
+ } else {
+
+ prt_printf(out, " seq=%llu", le64_to_cpu(jset->seq));
+
+ if (entry)
+ prt_printf(out, " offset=%zi/%u",
+ (u64 *) entry - jset->_data,
+ le32_to_cpu(jset->u64s));
+ }
+
prt_str(out, ": ");
}
-#define journal_entry_err(c, jset, entry, msg, ...) \
+#define journal_entry_err(c, version, jset, entry, _err, msg, ...) \
({ \
- struct printbuf buf = PRINTBUF; \
+ struct printbuf _buf = PRINTBUF; \
\
- journal_entry_err_msg(&buf, jset, entry); \
- prt_printf(&buf, msg, ##__VA_ARGS__); \
+ journal_entry_err_msg(&_buf, version, jset, entry); \
+ prt_printf(&_buf, msg, ##__VA_ARGS__); \
\
- switch (write) { \
+ switch (flags & BKEY_INVALID_WRITE) { \
case READ: \
- mustfix_fsck_err(c, "%s", buf.buf); \
+ mustfix_fsck_err(c, _err, "%s", _buf.buf); \
break; \
case WRITE: \
- bch_err(c, "corrupt metadata before write: %s\n", buf.buf);\
+ bch2_sb_error_count(c, BCH_FSCK_ERR_##_err); \
+ bch_err(c, "corrupt metadata before write: %s\n", _buf.buf);\
if (bch2_fs_inconsistent(c)) { \
ret = -BCH_ERR_fsck_errors_not_fixed; \
goto fsck_err; \
break; \
} \
\
- printbuf_exit(&buf); \
+ printbuf_exit(&_buf); \
true; \
})
-#define journal_entry_err_on(cond, c, jset, entry, msg, ...) \
- ((cond) ? journal_entry_err(c, jset, entry, msg, ##__VA_ARGS__) : false)
+#define journal_entry_err_on(cond, ...) \
+ ((cond) ? journal_entry_err(__VA_ARGS__) : false)
#define FSCK_DELETED_KEY 5
struct jset_entry *entry,
unsigned level, enum btree_id btree_id,
struct bkey_i *k,
- unsigned version, int big_endian, int write)
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
+ int write = flags & BKEY_INVALID_WRITE;
void *next = vstruct_next(entry);
struct printbuf buf = PRINTBUF;
int ret = 0;
- if (journal_entry_err_on(!k->k.u64s, c, jset, entry, "k->u64s 0")) {
+ if (journal_entry_err_on(!k->k.u64s,
+ c, version, jset, entry,
+ journal_entry_bkey_u64s_0,
+ "k->u64s 0")) {
entry->u64s = cpu_to_le16((u64 *) k - entry->_data);
journal_entry_null_range(vstruct_next(entry), next);
return FSCK_DELETED_KEY;
if (journal_entry_err_on((void *) bkey_next(k) >
(void *) vstruct_next(entry),
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_bkey_past_end,
"extends past end of journal entry")) {
entry->u64s = cpu_to_le16((u64 *) k - entry->_data);
journal_entry_null_range(vstruct_next(entry), next);
}
if (journal_entry_err_on(k->k.format != KEY_FORMAT_CURRENT,
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_bkey_bad_format,
"bad format %u", k->k.format)) {
le16_add_cpu(&entry->u64s, -((u16) k->k.u64s));
memmove(k, bkey_next(k), next - (void *) bkey_next(k));
if (bch2_bkey_invalid(c, bkey_i_to_s_c(k),
__btree_node_type(level, btree_id), write, &buf)) {
printbuf_reset(&buf);
- prt_printf(&buf, "invalid journal entry %s at offset %zi/%u seq %llu:",
- bch2_jset_entry_types[entry->type],
- (u64 *) entry - jset->_data,
- le32_to_cpu(jset->u64s),
- le64_to_cpu(jset->seq));
+ journal_entry_err_msg(&buf, version, jset, entry);
prt_newline(&buf);
printbuf_indent_add(&buf, 2);
bch2_bkey_invalid(c, bkey_i_to_s_c(k),
__btree_node_type(level, btree_id), write, &buf);
- mustfix_fsck_err(c, "%s", buf.buf);
+ mustfix_fsck_err(c, journal_entry_bkey_invalid,
+ "%s", buf.buf);
le16_add_cpu(&entry->u64s, -((u16) k->k.u64s));
memmove(k, bkey_next(k), next - (void *) bkey_next(k));
}
static int journal_entry_btree_keys_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct bkey_i *k = entry->start;
int ret = journal_validate_key(c, jset, entry,
entry->level,
entry->btree_id,
- k, version, big_endian, write);
+ k, version, big_endian,
+ flags|BKEY_INVALID_JOURNAL);
if (ret == FSCK_DELETED_KEY)
continue;
struct bkey_i *k;
bool first = true;
- vstruct_for_each(entry, k) {
+ jset_entry_for_each_key(entry, k) {
if (!first) {
prt_newline(out);
prt_printf(out, "%s: ", bch2_jset_entry_types[entry->type]);
}
- prt_printf(out, "btree=%s l=%u ", bch2_btree_ids[entry->btree_id], entry->level);
+ prt_printf(out, "btree=%s l=%u ", bch2_btree_id_str(entry->btree_id), entry->level);
bch2_bkey_val_to_text(out, c, bkey_i_to_s_c(k));
first = false;
}
}
static int journal_entry_btree_root_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct bkey_i *k = entry->start;
int ret = 0;
if (journal_entry_err_on(!entry->u64s ||
le16_to_cpu(entry->u64s) != k->k.u64s,
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_btree_root_bad_size,
"invalid btree root journal entry: wrong number of keys")) {
void *next = vstruct_next(entry);
/*
}
return journal_validate_key(c, jset, entry, 1, entry->btree_id, k,
- version, big_endian, write);
+ version, big_endian, flags);
fsck_err:
return ret;
}
}
static int journal_entry_prio_ptrs_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
/* obsolete, don't care: */
return 0;
}
static int journal_entry_blacklist_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
int ret = 0;
if (journal_entry_err_on(le16_to_cpu(entry->u64s) != 1,
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_blacklist_bad_size,
"invalid journal seq blacklist entry: bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
}
}
static int journal_entry_blacklist_v2_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct jset_entry_blacklist_v2 *bl_entry;
int ret = 0;
if (journal_entry_err_on(le16_to_cpu(entry->u64s) != 2,
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_blacklist_v2_bad_size,
"invalid journal seq blacklist entry: bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
goto out;
if (journal_entry_err_on(le64_to_cpu(bl_entry->start) >
le64_to_cpu(bl_entry->end),
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_blacklist_v2_start_past_end,
"invalid journal seq blacklist entry: start > end")) {
journal_entry_null_range(entry, vstruct_next(entry));
}
}
static int journal_entry_usage_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct jset_entry_usage *u =
container_of(entry, struct jset_entry_usage, entry);
int ret = 0;
if (journal_entry_err_on(bytes < sizeof(*u),
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_usage_bad_size,
"invalid journal entry usage: bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
static int journal_entry_data_usage_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct jset_entry_data_usage *u =
container_of(entry, struct jset_entry_data_usage, entry);
unsigned bytes = jset_u64s(le16_to_cpu(entry->u64s)) * sizeof(u64);
+ struct printbuf err = PRINTBUF;
int ret = 0;
if (journal_entry_err_on(bytes < sizeof(*u) ||
bytes < sizeof(*u) + u->r.nr_devs,
- c, jset, entry,
+ c, version, jset, entry,
+ journal_entry_data_usage_bad_size,
"invalid journal entry usage: bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
- return ret;
+ goto out;
}
+ if (journal_entry_err_on(bch2_replicas_entry_validate(&u->r, c->disk_sb.sb, &err),
+ c, version, jset, entry,
+ journal_entry_data_usage_bad_size,
+ "invalid journal entry usage: %s", err.buf)) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ goto out;
+ }
+out:
fsck_err:
+ printbuf_exit(&err);
return ret;
}
}
static int journal_entry_clock_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct jset_entry_clock *clock =
container_of(entry, struct jset_entry_clock, entry);
int ret = 0;
if (journal_entry_err_on(bytes != sizeof(*clock),
- c, jset, entry, "bad size")) {
+ c, version, jset, entry,
+ journal_entry_clock_bad_size,
+ "bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
if (journal_entry_err_on(clock->rw > 1,
- c, jset, entry, "bad rw")) {
+ c, version, jset, entry,
+ journal_entry_clock_bad_rw,
+ "bad rw")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
}
static int journal_entry_dev_usage_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
struct jset_entry_dev_usage *u =
container_of(entry, struct jset_entry_dev_usage, entry);
int ret = 0;
if (journal_entry_err_on(bytes < expected,
- c, jset, entry, "bad size (%u < %u)",
+ c, version, jset, entry,
+ journal_entry_dev_usage_bad_size,
+ "bad size (%u < %u)",
bytes, expected)) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
dev = le32_to_cpu(u->dev);
if (journal_entry_err_on(!bch2_dev_exists2(c, dev),
- c, jset, entry, "bad dev")) {
+ c, version, jset, entry,
+ journal_entry_dev_usage_bad_dev,
+ "bad dev")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
if (journal_entry_err_on(u->pad,
- c, jset, entry, "bad pad")) {
+ c, version, jset, entry,
+ journal_entry_dev_usage_bad_pad,
+ "bad pad")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
le64_to_cpu(u->d[i].sectors),
le64_to_cpu(u->d[i].fragmented));
}
-
- prt_printf(out, " buckets_ec: %llu", le64_to_cpu(u->buckets_ec));
}
static int journal_entry_log_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
return 0;
}
}
static int journal_entry_overwrite_validate(struct bch_fs *c,
- struct jset *jset,
- struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
- return journal_entry_btree_keys_validate(c, jset, entry, version, big_endian, write);
+ return journal_entry_btree_keys_validate(c, jset, entry,
+ version, big_endian, READ);
}
static void journal_entry_overwrite_to_text(struct printbuf *out, struct bch_fs *c,
journal_entry_btree_keys_to_text(out, c, entry);
}
+static int journal_entry_write_buffer_keys_validate(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
+{
+ return journal_entry_btree_keys_validate(c, jset, entry,
+ version, big_endian, READ);
+}
+
+static void journal_entry_write_buffer_keys_to_text(struct printbuf *out, struct bch_fs *c,
+ struct jset_entry *entry)
+{
+ journal_entry_btree_keys_to_text(out, c, entry);
+}
+
struct jset_entry_ops {
int (*validate)(struct bch_fs *, struct jset *,
- struct jset_entry *, unsigned, int, int);
+ struct jset_entry *, unsigned, int,
+ enum bkey_invalid_flags);
void (*to_text)(struct printbuf *, struct bch_fs *, struct jset_entry *);
};
int bch2_journal_entry_validate(struct bch_fs *c,
struct jset *jset,
struct jset_entry *entry,
- unsigned version, int big_endian, int write)
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
return entry->type < BCH_JSET_ENTRY_NR
? bch2_jset_entry_ops[entry->type].validate(c, jset, entry,
- version, big_endian, write)
+ version, big_endian, flags)
: 0;
}
}
static int jset_validate_entries(struct bch_fs *c, struct jset *jset,
- int write)
+ enum bkey_invalid_flags flags)
{
- struct jset_entry *entry;
+ unsigned version = le32_to_cpu(jset->version);
int ret = 0;
vstruct_for_each(jset, entry) {
- if (journal_entry_err_on(vstruct_next(entry) >
- vstruct_last(jset), c, jset, entry,
+ if (journal_entry_err_on(vstruct_next(entry) > vstruct_last(jset),
+ c, version, jset, entry,
+ journal_entry_past_jset_end,
"journal entry extends past end of jset")) {
jset->u64s = cpu_to_le32((u64 *) entry - jset->_data);
break;
}
ret = bch2_journal_entry_validate(c, jset, entry,
- le32_to_cpu(jset->version),
- JSET_BIG_ENDIAN(jset), write);
+ version, JSET_BIG_ENDIAN(jset), flags);
if (ret)
break;
}
static int jset_validate(struct bch_fs *c,
struct bch_dev *ca,
struct jset *jset, u64 sector,
- int write)
+ enum bkey_invalid_flags flags)
{
unsigned version;
int ret = 0;
return JOURNAL_ENTRY_NONE;
version = le32_to_cpu(jset->version);
- if (journal_entry_err_on((version != BCH_JSET_VERSION_OLD &&
- version < bcachefs_metadata_version_min) ||
- version >= bcachefs_metadata_version_max,
- c, jset, NULL,
- "%s sector %llu seq %llu: unknown journal entry version %u",
+ if (journal_entry_err_on(!bch2_version_compatible(version),
+ c, version, jset, NULL,
+ jset_unsupported_version,
+ "%s sector %llu seq %llu: incompatible journal entry version %u.%u",
ca ? ca->name : c->name,
sector, le64_to_cpu(jset->seq),
- version)) {
+ BCH_VERSION_MAJOR(version),
+ BCH_VERSION_MINOR(version))) {
/* don't try to continue: */
return -EINVAL;
}
if (journal_entry_err_on(!bch2_checksum_type_valid(c, JSET_CSUM_TYPE(jset)),
- c, jset, NULL,
+ c, version, jset, NULL,
+ jset_unknown_csum,
"%s sector %llu seq %llu: journal entry with unknown csum type %llu",
ca ? ca->name : c->name,
sector, le64_to_cpu(jset->seq),
/* last_seq is ignored when JSET_NO_FLUSH is true */
if (journal_entry_err_on(!JSET_NO_FLUSH(jset) &&
le64_to_cpu(jset->last_seq) > le64_to_cpu(jset->seq),
- c, jset, NULL,
+ c, version, jset, NULL,
+ jset_last_seq_newer_than_seq,
"invalid journal entry: last_seq > seq (%llu > %llu)",
le64_to_cpu(jset->last_seq),
le64_to_cpu(jset->seq))) {
return JOURNAL_ENTRY_BAD;
}
- ret = jset_validate_entries(c, jset, write);
+ ret = jset_validate_entries(c, jset, flags);
fsck_err:
return ret;
}
{
size_t bytes = vstruct_bytes(jset);
unsigned version;
- int write = READ;
+ enum bkey_invalid_flags flags = BKEY_INVALID_JOURNAL;
int ret = 0;
if (le64_to_cpu(jset->magic) != jset_magic(c))
return JOURNAL_ENTRY_NONE;
version = le32_to_cpu(jset->version);
- if (journal_entry_err_on((version != BCH_JSET_VERSION_OLD &&
- version < bcachefs_metadata_version_min) ||
- version >= bcachefs_metadata_version_max,
- c, jset, NULL,
- "%s sector %llu seq %llu: unknown journal entry version %u",
+ if (journal_entry_err_on(!bch2_version_compatible(version),
+ c, version, jset, NULL,
+ jset_unsupported_version,
+ "%s sector %llu seq %llu: unknown journal entry version %u.%u",
ca ? ca->name : c->name,
sector, le64_to_cpu(jset->seq),
- version)) {
+ BCH_VERSION_MAJOR(version),
+ BCH_VERSION_MINOR(version))) {
/* don't try to continue: */
return -EINVAL;
}
return JOURNAL_ENTRY_REREAD;
if (journal_entry_err_on(bytes > bucket_sectors_left << 9,
- c, jset, NULL,
+ c, version, jset, NULL,
+ jset_past_bucket_end,
"%s sector %llu seq %llu: journal entry too big (%zu bytes)",
ca ? ca->name : c->name,
sector, le64_to_cpu(jset->seq), bytes))
/* the bios are sized for this many pages, max: */
if (new_size > JOURNAL_ENTRY_SIZE_MAX)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_journal_read_buf_realloc;
new_size = roundup_pow_of_two(new_size);
n = kvpmalloc(new_size, GFP_KERNEL);
if (!n)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_journal_read_buf_realloc;
kvpfree(b->data, b->size);
b->data = n;
ret = submit_bio_wait(bio);
kfree(bio);
- if (bch2_dev_io_err_on(ret, ca,
+ if (bch2_dev_io_err_on(ret, ca, BCH_MEMBER_ERROR_read,
"journal read error: sector %llu",
offset) ||
bch2_meta_read_fault("journal")) {
ja->bucket_seq[bucket] = le64_to_cpu(j->seq);
csum_good = jset_csum_good(c, j);
- if (!csum_good)
+ if (bch2_dev_io_err_on(!csum_good, ca, BCH_MEMBER_ERROR_checksum,
+ "journal checksum error"))
saw_bad = true;
ret = bch2_encrypt(c, JSET_CSUM_TYPE(j), journal_nonce(j),
return 0;
}
-static void bch2_journal_read_device(struct closure *cl)
+static CLOSURE_CALLBACK(bch2_journal_read_device)
{
- struct journal_device *ja =
- container_of(cl, struct journal_device, read);
+ closure_type(ja, struct journal_device, read);
struct bch_dev *ca = container_of(ja, struct bch_dev, journal);
struct bch_fs *c = ca->fs;
struct journal_list *jlist =
struct journal_replay *r, **_r;
struct genradix_iter iter;
struct journal_read_buf buf = { NULL, 0 };
- u64 min_seq = U64_MAX;
unsigned i;
int ret = 0;
goto err;
}
- /* Find the journal bucket with the highest sequence number: */
- for (i = 0; i < ja->nr; i++) {
- if (ja->bucket_seq[i] > ja->bucket_seq[ja->cur_idx])
- ja->cur_idx = i;
-
- min_seq = min(ja->bucket_seq[i], min_seq);
- }
-
- /*
- * If there's duplicate journal entries in multiple buckets (which
- * definitely isn't supposed to happen, but...) - make sure to start
- * cur_idx at the last of those buckets, so we don't deadlock trying to
- * allocate
- */
- while (ja->bucket_seq[ja->cur_idx] > min_seq &&
- ja->bucket_seq[ja->cur_idx] ==
- ja->bucket_seq[(ja->cur_idx + 1) % ja->nr])
- ja->cur_idx = (ja->cur_idx + 1) % ja->nr;
-
ja->sectors_free = ca->mi.bucket_size;
mutex_lock(&jlist->lock);
- genradix_for_each(&c->journal_entries, iter, _r) {
+ genradix_for_each_reverse(&c->journal_entries, iter, _r) {
r = *_r;
if (!r)
continue;
for (i = 0; i < r->nr_ptrs; i++) {
- if (r->ptrs[i].dev == ca->dev_idx &&
- sector_to_bucket(ca, r->ptrs[i].sector) == ja->buckets[ja->cur_idx]) {
+ if (r->ptrs[i].dev == ca->dev_idx) {
unsigned wrote = bucket_remainder(ca, r->ptrs[i].sector) +
vstruct_sectors(&r->j, c->block_bits);
- ja->sectors_free = min(ja->sectors_free,
- ca->mi.bucket_size - wrote);
+ ja->cur_idx = r->ptrs[i].bucket;
+ ja->sectors_free = ca->mi.bucket_size - wrote;
+ goto found;
}
}
}
+found:
mutex_unlock(&jlist->lock);
if (ja->bucket_seq[ja->cur_idx] &&
ja->sectors_free == ca->mi.bucket_size) {
+#if 0
+ /*
+ * Debug code for ZNS support, where we (probably) want to be
+ * correlated where we stopped in the journal to the zone write
+ * points:
+ */
bch_err(c, "ja->sectors_free == ca->mi.bucket_size");
bch_err(c, "cur_idx %u/%u", ja->cur_idx, ja->nr);
for (i = 0; i < 3; i++) {
unsigned idx = (ja->cur_idx + ja->nr - 1 + i) % ja->nr;
+
bch_err(c, "bucket_seq[%u] = %llu", idx, ja->bucket_seq[idx]);
}
+#endif
ja->sectors_free = 0;
}
}
}
-int bch2_journal_read(struct bch_fs *c, u64 *blacklist_seq, u64 *start_seq)
+int bch2_journal_read(struct bch_fs *c,
+ u64 *last_seq,
+ u64 *blacklist_seq,
+ u64 *start_seq)
{
struct journal_list jlist;
struct journal_replay *i, **_i, *prev = NULL;
struct genradix_iter radix_iter;
- struct bch_dev *ca;
- unsigned iter;
struct printbuf buf = PRINTBUF;
bool degraded = false, last_write_torn = false;
- u64 seq, last_seq = 0;
+ u64 seq;
int ret = 0;
closure_init_stack(&jlist.cl);
jlist.last_seq = 0;
jlist.ret = 0;
- for_each_member_device(ca, c, iter) {
+ for_each_member_device(c, ca) {
if (!c->opts.fsck &&
!(bch2_dev_has_data(c, ca) & (1 << BCH_DATA_journal)))
continue;
if (jlist.ret)
return jlist.ret;
+ *last_seq = 0;
*start_seq = 0;
*blacklist_seq = 0;
/*
* Find most recent flush entry, and ignore newer non flush entries -
* those entries will be blacklisted:
- *
- *
- * XXX check for torn write on last journal entry
*/
genradix_for_each_reverse(&c->journal_entries, radix_iter, _i) {
- int write = READ;
+ enum bkey_invalid_flags flags = BKEY_INVALID_JOURNAL;
i = *_i;
*blacklist_seq = *start_seq = le64_to_cpu(i->j.seq) + 1;
if (JSET_NO_FLUSH(&i->j)) {
- journal_replay_free(c, i);
+ i->ignore = true;
continue;
}
if (!last_write_torn && !i->csum_good) {
last_write_torn = true;
- journal_replay_free(c, i);
+ i->ignore = true;
continue;
}
if (journal_entry_err_on(le64_to_cpu(i->j.last_seq) > le64_to_cpu(i->j.seq),
- c, &i->j, NULL,
+ c, le32_to_cpu(i->j.version), &i->j, NULL,
+ jset_last_seq_newer_than_seq,
"invalid journal entry: last_seq > seq (%llu > %llu)",
le64_to_cpu(i->j.last_seq),
le64_to_cpu(i->j.seq)))
i->j.last_seq = i->j.seq;
- last_seq = le64_to_cpu(i->j.last_seq);
+ *last_seq = le64_to_cpu(i->j.last_seq);
*blacklist_seq = le64_to_cpu(i->j.seq) + 1;
break;
}
return 0;
}
- if (!last_seq) {
- fsck_err(c, "journal read done, but no entries found after dropping non-flushes");
- ret = -1;
- goto err;
+ if (!*last_seq) {
+ fsck_err(c, dirty_but_no_journal_entries_post_drop_nonflushes,
+ "journal read done, but no entries found after dropping non-flushes");
+ return 0;
}
bch_info(c, "journal read done, replaying entries %llu-%llu",
- last_seq, *blacklist_seq - 1);
+ *last_seq, *blacklist_seq - 1);
if (*start_seq != *blacklist_seq)
bch_info(c, "dropped unflushed entries %llu-%llu",
continue;
seq = le64_to_cpu(i->j.seq);
- if (seq < last_seq) {
+ if (seq < *last_seq) {
journal_replay_free(c, i);
continue;
}
if (bch2_journal_seq_is_blacklisted(c, seq, true)) {
fsck_err_on(!JSET_NO_FLUSH(&i->j), c,
+ jset_seq_blacklisted,
"found blacklisted journal entry %llu", seq);
-
- journal_replay_free(c, i);
+ i->ignore = true;
}
}
/* Check for missing entries: */
- seq = last_seq;
+ seq = *last_seq;
genradix_for_each(&c->journal_entries, radix_iter, _i) {
i = *_i;
bch2_journal_ptrs_to_text(&buf2, c, i);
missing_end = seq - 1;
- fsck_err(c, "journal entries %llu-%llu missing! (replaying %llu-%llu)\n"
+ fsck_err(c, journal_entries_missing,
+ "journal entries %llu-%llu missing! (replaying %llu-%llu)\n"
" prev at %s\n"
" next at %s",
missing_start, missing_end,
- last_seq, *blacklist_seq - 1,
+ *last_seq, *blacklist_seq - 1,
buf1.buf, buf2.buf);
printbuf_exit(&buf1);
bch2_replicas_entry_sort(&replicas.e);
- /*
- * If we're mounting in degraded mode - if we didn't read all
- * the devices - this is wrong:
- */
-
printbuf_reset(&buf);
bch2_replicas_entry_to_text(&buf, &replicas.e);
if (!degraded &&
- fsck_err_on(!bch2_replicas_marked(c, &replicas.e), c,
- "superblock not marked as containing replicas %s",
- buf.buf)) {
+ !bch2_replicas_marked(c, &replicas.e) &&
+ (le64_to_cpu(i->j.seq) == *last_seq ||
+ fsck_err(c, journal_entry_replicas_not_marked,
+ "superblock not marked as containing replicas for journal entry %llu\n %s",
+ le64_to_cpu(i->j.seq), buf.buf))) {
ret = bch2_mark_replicas(c, &replicas.e);
if (ret)
goto err;
if (!ca->mi.durability ||
ca->mi.state != BCH_MEMBER_STATE_rw ||
!ja->nr ||
- bch2_bkey_has_device(bkey_i_to_s_c(&w->key),
- ca->dev_idx) ||
+ bch2_bkey_has_device_c(bkey_i_to_s_c(&w->key), ca->dev_idx) ||
sectors > ja->sectors_free)
continue;
}
/**
- * journal_next_bucket - move on to the next journal bucket if possible
+ * journal_write_alloc - decide where to write next journal entry
+ *
+ * @j: journal object
+ * @w: journal buf (entry to be written)
+ *
+ * Returns: 0 on success, or -EROFS on failure
*/
-static int journal_write_alloc(struct journal *j, struct journal_buf *w,
- unsigned sectors)
+static int journal_write_alloc(struct journal *j, struct journal_buf *w)
{
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct bch_devs_mask devs;
struct journal_device *ja;
struct bch_dev *ca;
struct dev_alloc_list devs_sorted;
+ unsigned sectors = vstruct_sectors(w->data, c->block_bits);
unsigned target = c->opts.metadata_target ?:
c->opts.foreground_target;
unsigned i, replicas = 0, replicas_want =
static void journal_buf_realloc(struct journal *j, struct journal_buf *buf)
{
+ struct bch_fs *c = container_of(j, struct bch_fs, journal);
+
/* we aren't holding j->lock: */
unsigned new_size = READ_ONCE(j->buf_size_want);
void *new_buf;
if (buf->buf_size >= new_size)
return;
- new_buf = kvpmalloc(new_size, GFP_NOIO|__GFP_NOWARN);
+ size_t btree_write_buffer_size = new_size / 64;
+
+ if (bch2_btree_write_buffer_resize(c, btree_write_buffer_size))
+ return;
+
+ new_buf = kvpmalloc(new_size, GFP_NOFS|__GFP_NOWARN);
if (!new_buf)
return;
return j->buf + (journal_last_unwritten_seq(j) & JOURNAL_BUF_MASK);
}
-static void journal_write_done(struct closure *cl)
+static CLOSURE_CALLBACK(journal_write_done)
{
- struct journal *j = container_of(cl, struct journal, io);
+ closure_type(j, struct journal, io);
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct journal_buf *w = journal_last_unwritten_buf(j);
struct bch_replicas_padded replicas;
bch2_do_discards(c);
closure_wake_up(&c->freelist_wait);
+
+ bch2_reset_alloc_cursors(c);
}
} else if (!j->err_seq || seq < j->err_seq)
j->err_seq = seq;
* Must come before signaling write completion, for
* bch2_fs_journal_stop():
*/
- if (j->watermark)
+ if (j->watermark != BCH_WATERMARK_stripe)
journal_reclaim_kick(&c->journal);
/* also must come before signalling write completion: */
} while ((v = atomic64_cmpxchg(&j->reservations.counter,
old.v, new.v)) != old.v);
+ bch2_journal_reclaim_fast(j);
bch2_journal_space_available(j);
+ track_event_change(&c->times[BCH_TIME_blocked_journal_max_in_flight],
+ &j->max_in_flight_start, false);
+
closure_wake_up(&w->wait);
journal_wake(j);
if (!journal_state_count(new, new.unwritten_idx) &&
journal_last_unwritten_seq(j) <= journal_cur_seq(j)) {
+ spin_unlock(&j->lock);
closure_call(&j->io, bch2_journal_write, c->io_complete_wq, NULL);
} else if (journal_last_unwritten_seq(j) == journal_cur_seq(j) &&
new.cur_entry_offset < JOURNAL_ENTRY_CLOSED_VAL) {
* might want to be written now:
*/
+ spin_unlock(&j->lock);
mod_delayed_work(c->io_complete_wq, &j->write_work, max(0L, delta));
+ } else {
+ spin_unlock(&j->lock);
}
-
- spin_unlock(&j->lock);
}
static void journal_write_endio(struct bio *bio)
struct journal_buf *w = journal_last_unwritten_buf(j);
unsigned long flags;
- if (bch2_dev_io_err_on(bio->bi_status, ca, "error writing journal entry %llu: %s",
+ if (bch2_dev_io_err_on(bio->bi_status, ca, BCH_MEMBER_ERROR_write,
+ "error writing journal entry %llu: %s",
le64_to_cpu(w->data->seq),
bch2_blk_status_to_str(bio->bi_status)) ||
bch2_meta_write_fault("journal")) {
percpu_ref_put(&ca->io_ref);
}
-static void do_journal_write(struct closure *cl)
+static CLOSURE_CALLBACK(do_journal_write)
{
- struct journal *j = container_of(cl, struct journal, io);
+ closure_type(j, struct journal, io);
struct bch_fs *c = container_of(j, struct bch_fs, journal);
struct bch_dev *ca;
struct journal_buf *w = journal_last_unwritten_buf(j);
}
continue_at(cl, journal_write_done, c->io_complete_wq);
- return;
}
-void bch2_journal_write(struct closure *cl)
+static int bch2_journal_write_prep(struct journal *j, struct journal_buf *w)
{
- struct journal *j = container_of(cl, struct journal, io);
struct bch_fs *c = container_of(j, struct bch_fs, journal);
- struct bch_dev *ca;
- struct journal_buf *w = journal_last_unwritten_buf(j);
struct jset_entry *start, *end;
- struct jset *jset;
- struct bio *bio;
- struct printbuf journal_debug_buf = PRINTBUF;
+ struct jset *jset = w->data;
+ struct journal_keys_to_wb wb = { NULL };
+ unsigned sectors, bytes, u64s;
+ unsigned long btree_roots_have = 0;
bool validate_before_checksum = false;
- unsigned i, sectors, bytes, u64s, nr_rw_members = 0;
+ u64 seq = le64_to_cpu(jset->seq);
int ret;
- BUG_ON(BCH_SB_CLEAN(c->disk_sb.sb));
-
- journal_buf_realloc(j, w);
- jset = w->data;
-
- j->write_start_time = local_clock();
-
- spin_lock(&j->lock);
- if (bch2_journal_error(j) ||
- w->noflush ||
- (!w->must_flush &&
- (jiffies - j->last_flush_write) < msecs_to_jiffies(c->opts.journal_flush_delay) &&
- test_bit(JOURNAL_MAY_SKIP_FLUSH, &j->flags))) {
- w->noflush = true;
- SET_JSET_NO_FLUSH(jset, true);
- jset->last_seq = 0;
- w->last_seq = 0;
-
- j->nr_noflush_writes++;
- } else {
- j->last_flush_write = jiffies;
- j->nr_flush_writes++;
- }
- spin_unlock(&j->lock);
-
/*
- * New btree roots are set by journalling them; when the journal entry
- * gets written we have to propagate them to c->btree_roots
+ * Simple compaction, dropping empty jset_entries (from journal
+ * reservations that weren't fully used) and merging jset_entries that
+ * can be.
*
- * But, every journal entry we write has to contain all the btree roots
- * (at least for now); so after we copy btree roots to c->btree_roots we
- * have to get any missing btree roots and add them to this journal
- * entry:
+ * If we wanted to be really fancy here, we could sort all the keys in
+ * the jset and drop keys that were overwritten - probably not worth it:
*/
+ vstruct_for_each(jset, i) {
+ unsigned u64s = le16_to_cpu(i->u64s);
+
+ /* Empty entry: */
+ if (!u64s)
+ continue;
+
+ /*
+ * New btree roots are set by journalling them; when the journal
+ * entry gets written we have to propagate them to
+ * c->btree_roots
+ *
+ * But, every journal entry we write has to contain all the
+ * btree roots (at least for now); so after we copy btree roots
+ * to c->btree_roots we have to get any missing btree roots and
+ * add them to this journal entry:
+ */
+ switch (i->type) {
+ case BCH_JSET_ENTRY_btree_root:
+ bch2_journal_entry_to_btree_root(c, i);
+ __set_bit(i->btree_id, &btree_roots_have);
+ break;
+ case BCH_JSET_ENTRY_write_buffer_keys:
+ EBUG_ON(!w->need_flush_to_write_buffer);
+
+ if (!wb.wb)
+ bch2_journal_keys_to_write_buffer_start(c, &wb, seq);
+
+ struct bkey_i *k;
+ jset_entry_for_each_key(i, k) {
+ ret = bch2_journal_key_to_wb(c, &wb, i->btree_id, k);
+ if (ret) {
+ bch2_fs_fatal_error(c, "-ENOMEM flushing journal keys to btree write buffer");
+ bch2_journal_keys_to_write_buffer_end(c, &wb);
+ return ret;
+ }
+ }
+ i->type = BCH_JSET_ENTRY_btree_keys;
+ break;
+ }
+ }
- bch2_journal_entries_to_btree_roots(c, jset);
+ if (wb.wb)
+ bch2_journal_keys_to_write_buffer_end(c, &wb);
+ w->need_flush_to_write_buffer = false;
start = end = vstruct_last(jset);
- end = bch2_btree_roots_to_journal_entries(c, jset->start, end);
+ end = bch2_btree_roots_to_journal_entries(c, end, btree_roots_have);
- bch2_journal_super_entries_add_common(c, &end,
- le64_to_cpu(jset->seq));
+ bch2_journal_super_entries_add_common(c, &end, seq);
u64s = (u64 *) end - (u64 *) start;
BUG_ON(u64s > j->entry_u64s_reserved);
le32_add_cpu(&jset->u64s, u64s);
- BUG_ON(vstruct_sectors(jset, c->block_bits) > w->sectors);
+
+ sectors = vstruct_sectors(jset, c->block_bits);
+ bytes = vstruct_bytes(jset);
+
+ if (sectors > w->sectors) {
+ bch2_fs_fatal_error(c, "aieeee! journal write overran available space, %zu > %u (extra %u reserved %u/%u)",
+ vstruct_bytes(jset), w->sectors << 9,
+ u64s, w->u64s_reserved, j->entry_u64s_reserved);
+ return -EINVAL;
+ }
jset->magic = cpu_to_le64(jset_magic(c));
- jset->version = c->sb.version < bcachefs_metadata_version_bkey_renumber
- ? cpu_to_le32(BCH_JSET_VERSION_OLD)
- : cpu_to_le32(c->sb.version);
+ jset->version = cpu_to_le32(c->sb.version);
SET_JSET_BIG_ENDIAN(jset, CPU_BIG_ENDIAN);
SET_JSET_CSUM_TYPE(jset, bch2_meta_checksum_type(c));
if (!JSET_NO_FLUSH(jset) && journal_entry_empty(jset))
- j->last_empty_seq = le64_to_cpu(jset->seq);
+ j->last_empty_seq = seq;
if (bch2_csum_type_is_encryption(JSET_CSUM_TYPE(jset)))
validate_before_checksum = true;
validate_before_checksum = true;
if (validate_before_checksum &&
- jset_validate(c, NULL, jset, 0, WRITE))
- goto err;
+ (ret = jset_validate(c, NULL, jset, 0, WRITE)))
+ return ret;
ret = bch2_encrypt(c, JSET_CSUM_TYPE(jset), journal_nonce(jset),
jset->encrypted_start,
vstruct_end(jset) - (void *) jset->encrypted_start);
if (bch2_fs_fatal_err_on(ret, c,
"error decrypting journal entry: %i", ret))
- goto err;
+ return ret;
jset->csum = csum_vstruct(c, JSET_CSUM_TYPE(jset),
journal_nonce(jset), jset);
if (!validate_before_checksum &&
- jset_validate(c, NULL, jset, 0, WRITE))
- goto err;
-
- sectors = vstruct_sectors(jset, c->block_bits);
- BUG_ON(sectors > w->sectors);
+ (ret = jset_validate(c, NULL, jset, 0, WRITE)))
+ return ret;
- bytes = vstruct_bytes(jset);
memset((void *) jset + bytes, 0, (sectors << 9) - bytes);
+ return 0;
+}
+
+static int bch2_journal_write_pick_flush(struct journal *j, struct journal_buf *w)
+{
+ struct bch_fs *c = container_of(j, struct bch_fs, journal);
+ int error = bch2_journal_error(j);
+
+ /*
+ * If the journal is in an error state - we did an emergency shutdown -
+ * we prefer to continue doing journal writes. We just mark them as
+ * noflush so they'll never be used, but they'll still be visible by the
+ * list_journal tool - this helps in debugging.
+ *
+ * There's a caveat: the first journal write after marking the
+ * superblock dirty must always be a flush write, because on startup
+ * from a clean shutdown we didn't necessarily read the journal and the
+ * new journal write might overwrite whatever was in the journal
+ * previously - we can't leave the journal without any flush writes in
+ * it.
+ *
+ * So if we're in an error state, and we're still starting up, we don't
+ * write anything at all.
+ */
+ if (error && test_bit(JOURNAL_NEED_FLUSH_WRITE, &j->flags))
+ return -EIO;
+
+ if (error ||
+ w->noflush ||
+ (!w->must_flush &&
+ (jiffies - j->last_flush_write) < msecs_to_jiffies(c->opts.journal_flush_delay) &&
+ test_bit(JOURNAL_MAY_SKIP_FLUSH, &j->flags))) {
+ w->noflush = true;
+ SET_JSET_NO_FLUSH(w->data, true);
+ w->data->last_seq = 0;
+ w->last_seq = 0;
+
+ j->nr_noflush_writes++;
+ } else {
+ j->last_flush_write = jiffies;
+ j->nr_flush_writes++;
+ clear_bit(JOURNAL_NEED_FLUSH_WRITE, &j->flags);
+ }
+
+ return 0;
+}
+
+CLOSURE_CALLBACK(bch2_journal_write)
+{
+ closure_type(j, struct journal, io);
+ struct bch_fs *c = container_of(j, struct bch_fs, journal);
+ struct journal_buf *w = journal_last_unwritten_buf(j);
+ struct bch_replicas_padded replicas;
+ struct bio *bio;
+ struct printbuf journal_debug_buf = PRINTBUF;
+ unsigned nr_rw_members = 0;
+ int ret;
+
+ BUG_ON(BCH_SB_CLEAN(c->disk_sb.sb));
+
+ j->write_start_time = local_clock();
-retry_alloc:
spin_lock(&j->lock);
- ret = journal_write_alloc(j, w, sectors);
+ ret = bch2_journal_write_pick_flush(j, w);
+ spin_unlock(&j->lock);
+ if (ret)
+ goto err;
+
+ mutex_lock(&j->buf_lock);
+ journal_buf_realloc(j, w);
+
+ ret = bch2_journal_write_prep(j, w);
+ mutex_unlock(&j->buf_lock);
+ if (ret)
+ goto err;
+
+ j->entry_bytes_written += vstruct_bytes(w->data);
+
+ while (1) {
+ spin_lock(&j->lock);
+ ret = journal_write_alloc(j, w);
+ if (!ret || !j->can_discard)
+ break;
- if (ret && j->can_discard) {
spin_unlock(&j->lock);
bch2_journal_do_discards(j);
- goto retry_alloc;
}
- if (ret)
+ if (ret) {
__bch2_journal_debug_to_text(&journal_debug_buf, j);
+ spin_unlock(&j->lock);
+ bch_err(c, "Unable to allocate journal write:\n%s",
+ journal_debug_buf.buf);
+ printbuf_exit(&journal_debug_buf);
+ goto err;
+ }
/*
* write is allocated, no longer need to account for it in
bch2_journal_space_available(j);
spin_unlock(&j->lock);
- if (ret) {
- bch_err(c, "Unable to allocate journal write:\n%s",
- journal_debug_buf.buf);
- printbuf_exit(&journal_debug_buf);
- bch2_fatal_error(c);
- continue_at(cl, journal_write_done, c->io_complete_wq);
- return;
- }
-
w->devs_written = bch2_bkey_devs(bkey_i_to_s_c(&w->key));
if (c->opts.nochanges)
goto no_io;
- for_each_rw_member(ca, c, i)
+ for_each_rw_member(c, ca)
nr_rw_members++;
if (nr_rw_members > 1)
w->separate_flush = true;
- if (!JSET_NO_FLUSH(jset) && w->separate_flush) {
- for_each_rw_member(ca, c, i) {
+ /*
+ * Mark journal replicas before we submit the write to guarantee
+ * recovery will find the journal entries after a crash.
+ */
+ bch2_devlist_to_replicas(&replicas.e, BCH_DATA_journal,
+ w->devs_written);
+ ret = bch2_mark_replicas(c, &replicas.e);
+ if (ret)
+ goto err;
+
+ if (!JSET_NO_FLUSH(w->data) && w->separate_flush) {
+ for_each_rw_member(c, ca) {
percpu_ref_get(&ca->io_ref);
bio = ca->journal.bio;