// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
+#include "alloc_background.h"
#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 "sb-clean.h"
+#include "trace.h"
-#include <trace/events/bcachefs.h>
+void bch2_journal_ptrs_to_text(struct printbuf *out, struct bch_fs *c,
+ struct journal_replay *j)
+{
+ darray_for_each(j->ptrs, i) {
+ struct bch_dev *ca = bch_dev_bkey_exists(c, i->dev);
+ u64 offset;
+
+ div64_u64_rem(i->sector, ca->mi.bucket_size, &offset);
+
+ if (i != j->ptrs.data)
+ prt_printf(out, " ");
+ prt_printf(out, "%u:%u:%u (sector %llu)",
+ i->dev, i->bucket, i->bucket_offset, i->sector);
+ }
+}
+
+static void bch2_journal_replay_to_text(struct printbuf *out, struct bch_fs *c,
+ struct journal_replay *j)
+{
+ prt_printf(out, "seq %llu ", le64_to_cpu(j->j.seq));
+
+ bch2_journal_ptrs_to_text(out, c, j);
+
+ struct jset_entry *entry;
+ for_each_jset_entry_type(entry, &j->j, BCH_JSET_ENTRY_datetime) {
+ struct jset_entry_datetime *datetime =
+ container_of(entry, struct jset_entry_datetime, entry);
+ bch2_prt_datetime(out, le64_to_cpu(datetime->seconds));
+ break;
+ }
+}
+
+static struct nonce journal_nonce(const struct jset *jset)
+{
+ return (struct nonce) {{
+ [0] = 0,
+ [1] = ((__le32 *) &jset->seq)[0],
+ [2] = ((__le32 *) &jset->seq)[1],
+ [3] = BCH_NONCE_JOURNAL,
+ }};
+}
-static void __journal_replay_free(struct journal_replay *i)
+static bool jset_csum_good(struct bch_fs *c, struct jset *j, struct bch_csum *csum)
{
- list_del(&i->list);
- kvpfree(i, offsetof(struct journal_replay, j) +
- vstruct_bytes(&i->j));
+ if (!bch2_checksum_type_valid(c, JSET_CSUM_TYPE(j))) {
+ *csum = (struct bch_csum) {};
+ return false;
+ }
+ *csum = csum_vstruct(c, JSET_CSUM_TYPE(j), journal_nonce(j), j);
+ return !bch2_crc_cmp(j->csum, *csum);
+}
+
+static inline u32 journal_entry_radix_idx(struct bch_fs *c, u64 seq)
+{
+ return (seq - c->journal_entries_base_seq) & (~0U >> 1);
+}
+
+static void __journal_replay_free(struct bch_fs *c,
+ struct journal_replay *i)
+{
+ struct journal_replay **p =
+ genradix_ptr(&c->journal_entries,
+ journal_entry_radix_idx(c, le64_to_cpu(i->j.seq)));
+
+ BUG_ON(*p != i);
+ *p = NULL;
+ kvfree(i);
}
static void journal_replay_free(struct bch_fs *c, struct journal_replay *i)
i->ignore = true;
if (!c->opts.read_entire_journal)
- __journal_replay_free(i);
+ __journal_replay_free(c, i);
}
struct journal_list {
struct closure cl;
+ u64 last_seq;
struct mutex lock;
- struct list_head *head;
int ret;
};
* be replayed:
*/
static int journal_entry_add(struct bch_fs *c, struct bch_dev *ca,
- struct bch_extent_ptr entry_ptr,
- struct journal_list *jlist, struct jset *j,
- bool bad)
+ struct journal_ptr entry_ptr,
+ struct journal_list *jlist, struct jset *j)
{
- struct journal_replay *i, *pos, *dup = NULL;
- struct bch_extent_ptr *ptr;
- struct list_head *where;
+ struct genradix_iter iter;
+ struct journal_replay **_i, *i, *dup;
size_t bytes = vstruct_bytes(j);
- u64 last_seq = 0;
+ u64 last_seq = !JSET_NO_FLUSH(j) ? le64_to_cpu(j->last_seq) : 0;
+ struct printbuf buf = PRINTBUF;
int ret = JOURNAL_ENTRY_ADD_OK;
- list_for_each_entry_reverse(i, jlist->head, list) {
- if (!JSET_NO_FLUSH(&i->j)) {
- last_seq = le64_to_cpu(i->j.last_seq);
- break;
- }
- }
-
/* Is this entry older than the range we need? */
if (!c->opts.read_entire_journal &&
- le64_to_cpu(j->seq) < last_seq) {
- ret = JOURNAL_ENTRY_ADD_OUT_OF_RANGE;
- goto out;
- }
+ le64_to_cpu(j->seq) < jlist->last_seq)
+ return JOURNAL_ENTRY_ADD_OUT_OF_RANGE;
+
+ /*
+ * genradixes are indexed by a ulong, not a u64, so we can't index them
+ * by sequence number directly: Assume instead that they will all fall
+ * within the range of +-2billion of the filrst one we find.
+ */
+ if (!c->journal_entries_base_seq)
+ c->journal_entries_base_seq = max_t(s64, 1, le64_to_cpu(j->seq) - S32_MAX);
/* Drop entries we don't need anymore */
- if (!JSET_NO_FLUSH(j)) {
- list_for_each_entry_safe(i, pos, jlist->head, list) {
- if (le64_to_cpu(i->j.seq) >= le64_to_cpu(j->last_seq))
+ if (last_seq > jlist->last_seq && !c->opts.read_entire_journal) {
+ genradix_for_each_from(&c->journal_entries, iter, _i,
+ journal_entry_radix_idx(c, jlist->last_seq)) {
+ i = *_i;
+
+ if (!i || i->ignore)
+ continue;
+
+ if (le64_to_cpu(i->j.seq) >= last_seq)
break;
journal_replay_free(c, i);
}
}
- list_for_each_entry_reverse(i, jlist->head, list) {
- if (le64_to_cpu(j->seq) > le64_to_cpu(i->j.seq)) {
- where = &i->list;
- goto add;
- }
- }
+ jlist->last_seq = max(jlist->last_seq, last_seq);
- where = jlist->head;
-add:
- dup = where->next != jlist->head
- ? container_of(where->next, struct journal_replay, list)
- : NULL;
-
- if (dup && le64_to_cpu(j->seq) != le64_to_cpu(dup->j.seq))
- dup = NULL;
+ _i = genradix_ptr_alloc(&c->journal_entries,
+ journal_entry_radix_idx(c, le64_to_cpu(j->seq)),
+ GFP_KERNEL);
+ if (!_i)
+ return -BCH_ERR_ENOMEM_journal_entry_add;
/*
* Duplicate journal entries? If so we want the one that didn't have a
* checksum error:
*/
+ dup = *_i;
if (dup) {
- if (dup->bad) {
- /* we'll replace @dup: */
- } else if (bad) {
- i = dup;
- goto found;
- } else {
- fsck_err_on(bytes != vstruct_bytes(&dup->j) ||
- memcmp(j, &dup->j, bytes), c,
- "found duplicate but non identical journal entries (seq %llu)",
- le64_to_cpu(j->seq));
- i = dup;
- goto found;
- }
- }
+ bool identical = bytes == vstruct_bytes(&dup->j) &&
+ !memcmp(j, &dup->j, bytes);
+ bool not_identical = !identical &&
+ entry_ptr.csum_good &&
+ dup->csum_good;
+
+ bool same_device = false;
+ darray_for_each(dup->ptrs, ptr)
+ if (ptr->dev == ca->dev_idx)
+ same_device = true;
+
+ ret = darray_push(&dup->ptrs, entry_ptr);
+ if (ret)
+ goto out;
+
+ bch2_journal_replay_to_text(&buf, c, dup);
+
+ fsck_err_on(same_device,
+ c, journal_entry_dup_same_device,
+ "duplicate journal entry on same device\n %s",
+ buf.buf);
+
+ fsck_err_on(not_identical,
+ c, journal_entry_replicas_data_mismatch,
+ "found duplicate but non identical journal entries\n %s",
+ buf.buf);
+
+ if (entry_ptr.csum_good && !identical)
+ goto replace;
- i = kvpmalloc(offsetof(struct journal_replay, j) + bytes, GFP_KERNEL);
- if (!i) {
- ret = -ENOMEM;
goto out;
}
+replace:
+ i = kvmalloc(offsetof(struct journal_replay, j) + bytes, GFP_KERNEL);
+ if (!i)
+ return -BCH_ERR_ENOMEM_journal_entry_add;
- i->nr_ptrs = 0;
- i->bad = bad;
+ darray_init(&i->ptrs);
+ 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");
if (dup) {
- i->nr_ptrs = dup->nr_ptrs;
- memcpy(i->ptrs, dup->ptrs, sizeof(dup->ptrs));
- __journal_replay_free(dup);
- }
-
- list_add(&i->list, where);
-found:
- for (ptr = i->ptrs; ptr < i->ptrs + i->nr_ptrs; ptr++) {
- if (ptr->dev == ca->dev_idx) {
- bch_err(c, "duplicate journal entry %llu on same device",
- le64_to_cpu(i->j.seq));
- goto out;
- }
- }
-
- if (i->nr_ptrs >= ARRAY_SIZE(i->ptrs)) {
- bch_err(c, "found too many copies of journal entry %llu",
- le64_to_cpu(i->j.seq));
- goto out;
+ /* The first ptr should represent the jset we kept: */
+ darray_for_each(dup->ptrs, ptr)
+ darray_push(&i->ptrs, *ptr);
+ __journal_replay_free(c, dup);
+ } else {
+ darray_push(&i->ptrs, entry_ptr);
}
- i->ptrs[i->nr_ptrs++] = entry_ptr;
+ *_i = i;
out:
fsck_err:
+ printbuf_exit(&buf);
return ret;
}
-static struct nonce journal_nonce(const struct jset *jset)
-{
- return (struct nonce) {{
- [0] = 0,
- [1] = ((__le32 *) &jset->seq)[0],
- [2] = ((__le32 *) &jset->seq)[1],
- [3] = BCH_NONCE_JOURNAL,
- }};
-}
-
/* this fills in a range with empty jset_entries: */
static void journal_entry_null_range(void *start, void *end)
{
#define JOURNAL_ENTRY_NONE 6
#define JOURNAL_ENTRY_BAD 7
-#define journal_entry_err(c, msg, ...) \
+static void journal_entry_err_msg(struct printbuf *out,
+ u32 version,
+ struct jset *jset,
+ struct jset_entry *entry)
+{
+ 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, version, jset, entry, _err, msg, ...) \
({ \
- switch (write) { \
+ struct printbuf _buf = PRINTBUF; \
+ \
+ journal_entry_err_msg(&_buf, version, jset, entry); \
+ prt_printf(&_buf, msg, ##__VA_ARGS__); \
+ \
+ switch (flags & BKEY_INVALID_WRITE) { \
case READ: \
- mustfix_fsck_err(c, msg, ##__VA_ARGS__); \
+ mustfix_fsck_err(c, _err, "%s", _buf.buf); \
break; \
case WRITE: \
- bch_err(c, "corrupt metadata before write:\n" \
- msg, ##__VA_ARGS__); \
+ 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_FSCK_ERRORS_NOT_FIXED; \
+ ret = -BCH_ERR_fsck_errors_not_fixed; \
goto fsck_err; \
} \
break; \
} \
+ \
+ printbuf_exit(&_buf); \
true; \
})
-#define journal_entry_err_on(cond, c, msg, ...) \
- ((cond) ? journal_entry_err(c, msg, ##__VA_ARGS__) : false)
+#define journal_entry_err_on(cond, ...) \
+ ((cond) ? journal_entry_err(__VA_ARGS__) : false)
#define FSCK_DELETED_KEY 5
-static int journal_validate_key(struct bch_fs *c, const char *where,
+static int journal_validate_key(struct bch_fs *c,
+ struct jset *jset,
struct jset_entry *entry,
unsigned level, enum btree_id btree_id,
- struct bkey_i *k, const char *type,
- unsigned version, int big_endian, int write)
+ struct bkey_i *k,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
{
+ int write = flags & BKEY_INVALID_WRITE;
void *next = vstruct_next(entry);
- const char *invalid;
+ struct printbuf buf = PRINTBUF;
int ret = 0;
- if (journal_entry_err_on(!k->k.u64s, c,
- "invalid %s in %s entry offset %zi/%u: k->u64s 0",
- type, where,
- (u64 *) k - entry->_data,
- le16_to_cpu(entry->u64s))) {
+ 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,
- "invalid %s in %s entry offset %zi/%u: extends past end of journal entry",
- type, where,
- (u64 *) k - entry->_data,
- le16_to_cpu(entry->u64s))) {
+ (void *) vstruct_next(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);
return FSCK_DELETED_KEY;
}
- if (journal_entry_err_on(k->k.format != KEY_FORMAT_CURRENT, c,
- "invalid %s in %s entry offset %zi/%u: bad format %u",
- type, where,
- (u64 *) k - entry->_data,
- le16_to_cpu(entry->u64s),
- k->k.format)) {
+ if (journal_entry_err_on(k->k.format != KEY_FORMAT_CURRENT,
+ 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));
journal_entry_null_range(vstruct_next(entry), next);
bch2_bkey_compat(level, btree_id, version, big_endian,
write, NULL, bkey_to_packed(k));
- invalid = bch2_bkey_invalid(c, bkey_i_to_s_c(k),
- __btree_node_type(level, btree_id));
- if (invalid) {
- char buf[160];
+ if (bch2_bkey_invalid(c, bkey_i_to_s_c(k),
+ __btree_node_type(level, btree_id), write, &buf)) {
+ printbuf_reset(&buf);
+ journal_entry_err_msg(&buf, version, jset, entry);
+ prt_newline(&buf);
+ printbuf_indent_add(&buf, 2);
+
+ bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(k));
+ prt_newline(&buf);
+ bch2_bkey_invalid(c, bkey_i_to_s_c(k),
+ __btree_node_type(level, btree_id), write, &buf);
- bch2_bkey_val_to_text(&PBUF(buf), c, bkey_i_to_s_c(k));
- mustfix_fsck_err(c, "invalid %s in %s entry offset %zi/%u: %s\n%s",
- type, where,
- (u64 *) k - entry->_data,
- le16_to_cpu(entry->u64s),
- invalid, 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));
journal_entry_null_range(vstruct_next(entry), next);
+
+ printbuf_exit(&buf);
return FSCK_DELETED_KEY;
}
bch2_bkey_compat(level, btree_id, version, big_endian,
write, NULL, bkey_to_packed(k));
fsck_err:
+ printbuf_exit(&buf);
return ret;
}
static int journal_entry_btree_keys_validate(struct bch_fs *c,
- const char *where,
- 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;
while (k != vstruct_last(entry)) {
- int ret = journal_validate_key(c, where, entry,
+ int ret = journal_validate_key(c, jset, entry,
entry->level,
entry->btree_id,
- k, "key", 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) {
- printbuf_newline(out);
- pr_buf(out, "%s: ", bch2_jset_entry_types[entry->type]);
+ prt_newline(out);
+ prt_printf(out, "%s: ", bch2_jset_entry_types[entry->type]);
}
- pr_buf(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,
- const char *where,
- 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,
+ le16_to_cpu(entry->u64s) != k->k.u64s,
+ 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 0;
}
- return journal_validate_key(c, where, entry, 1, entry->btree_id, k,
- "btree root", version, big_endian, write);
+ ret = journal_validate_key(c, jset, entry, 1, entry->btree_id, k,
+ version, big_endian, flags);
+ if (ret == FSCK_DELETED_KEY)
+ ret = 0;
fsck_err:
return ret;
}
}
static int journal_entry_prio_ptrs_validate(struct bch_fs *c,
- const char *where,
- 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,
- const char *where,
- 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,
+ if (journal_entry_err_on(le16_to_cpu(entry->u64s) != 1,
+ c, version, jset, entry,
+ journal_entry_blacklist_bad_size,
"invalid journal seq blacklist entry: bad size")) {
journal_entry_null_range(entry, vstruct_next(entry));
}
struct jset_entry_blacklist *bl =
container_of(entry, struct jset_entry_blacklist, entry);
- pr_buf(out, "seq=%llu", le64_to_cpu(bl->seq));
+ prt_printf(out, "seq=%llu", le64_to_cpu(bl->seq));
}
static int journal_entry_blacklist_v2_validate(struct bch_fs *c,
- const char *where,
- 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,
+ if (journal_entry_err_on(le16_to_cpu(entry->u64s) != 2,
+ 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;
bl_entry = container_of(entry, struct jset_entry_blacklist_v2, entry);
if (journal_entry_err_on(le64_to_cpu(bl_entry->start) >
- le64_to_cpu(bl_entry->end), c,
+ le64_to_cpu(bl_entry->end),
+ 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));
}
struct jset_entry_blacklist_v2 *bl =
container_of(entry, struct jset_entry_blacklist_v2, entry);
- pr_buf(out, "start=%llu end=%llu",
+ prt_printf(out, "start=%llu end=%llu",
le64_to_cpu(bl->start),
le64_to_cpu(bl->end));
}
static int journal_entry_usage_validate(struct bch_fs *c,
- const char *where,
- 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,
+ 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;
struct jset_entry_usage *u =
container_of(entry, struct jset_entry_usage, entry);
- pr_buf(out, "type=%s v=%llu",
+ prt_printf(out, "type=%s v=%llu",
bch2_fs_usage_types[u->entry.btree_id],
le64_to_cpu(u->v));
}
static int journal_entry_data_usage_validate(struct bch_fs *c,
- const char *where,
- 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,
+ 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;
}
container_of(entry, struct jset_entry_data_usage, entry);
bch2_replicas_entry_to_text(out, &u->r);
- pr_buf(out, "=%llu", le64_to_cpu(u->v));
+ prt_printf(out, "=%llu", le64_to_cpu(u->v));
}
static int journal_entry_clock_validate(struct bch_fs *c,
- const char *where,
- 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, "invalid journal entry clock: 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, "invalid journal entry clock: bad rw")) {
+ c, version, jset, entry,
+ journal_entry_clock_bad_rw,
+ "bad rw")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
struct jset_entry_clock *clock =
container_of(entry, struct jset_entry_clock, entry);
- pr_buf(out, "%s=%llu", clock->rw ? "write" : "read", le64_to_cpu(clock->time));
+ prt_printf(out, "%s=%llu", clock->rw ? "write" : "read", le64_to_cpu(clock->time));
}
static int journal_entry_dev_usage_validate(struct bch_fs *c,
- const char *where,
- 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, "invalid journal entry dev usage: 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, "invalid journal entry dev usage: 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, "invalid journal entry dev usage: bad pad")) {
+ c, version, jset, entry,
+ journal_entry_dev_usage_bad_pad,
+ "bad pad")) {
journal_entry_null_range(entry, vstruct_next(entry));
return ret;
}
container_of(entry, struct jset_entry_dev_usage, entry);
unsigned i, nr_types = jset_entry_dev_usage_nr_types(u);
- pr_buf(out, "dev=%u", le32_to_cpu(u->dev));
+ prt_printf(out, "dev=%u", le32_to_cpu(u->dev));
for (i = 0; i < nr_types; i++) {
- if (i < BCH_DATA_NR)
- pr_buf(out, " %s", bch2_data_types[i]);
- else
- pr_buf(out, " (unknown data type %u)", i);
- pr_buf(out, ": buckets=%llu sectors=%llu fragmented=%llu",
+ bch2_prt_data_type(out, i);
+ prt_printf(out, ": buckets=%llu sectors=%llu fragmented=%llu",
le64_to_cpu(u->d[i].buckets),
le64_to_cpu(u->d[i].sectors),
le64_to_cpu(u->d[i].fragmented));
}
-
- pr_buf(out, " buckets_ec: %llu buckets_unavailable: %llu",
- le64_to_cpu(u->buckets_ec),
- le64_to_cpu(u->buckets_unavailable));
}
static int journal_entry_log_validate(struct bch_fs *c,
- const char *where,
- 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;
}
struct jset_entry_log *l = container_of(entry, struct jset_entry_log, entry);
unsigned bytes = vstruct_bytes(entry) - offsetof(struct jset_entry_log, d);
- bch_scnmemcpy(out, l->d, strnlen(l->d, bytes));
+ prt_printf(out, "%.*s", bytes, l->d);
+}
+
+static int journal_entry_overwrite_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_overwrite_to_text(struct printbuf *out, struct bch_fs *c,
+ struct jset_entry *entry)
+{
+ 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);
+}
+
+static int journal_entry_datetime_validate(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ unsigned version, int big_endian,
+ enum bkey_invalid_flags flags)
+{
+ unsigned bytes = vstruct_bytes(entry);
+ unsigned expected = 16;
+ int ret = 0;
+
+ if (journal_entry_err_on(vstruct_bytes(entry) < expected,
+ 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;
+ }
+fsck_err:
+ return ret;
+}
+
+static void journal_entry_datetime_to_text(struct printbuf *out, struct bch_fs *c,
+ struct jset_entry *entry)
+{
+ struct jset_entry_datetime *datetime =
+ container_of(entry, struct jset_entry_datetime, entry);
+
+ bch2_prt_datetime(out, le64_to_cpu(datetime->seconds));
}
struct jset_entry_ops {
- int (*validate)(struct bch_fs *, const char *,
- struct jset_entry *, unsigned, int, int);
+ int (*validate)(struct bch_fs *, struct jset *,
+ struct jset_entry *, unsigned, int,
+ enum bkey_invalid_flags);
void (*to_text)(struct printbuf *, struct bch_fs *, struct jset_entry *);
};
#undef x
};
-int bch2_journal_entry_validate(struct bch_fs *c, const char *where,
+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, where, entry,
- version, big_endian, write)
+ ? bch2_jset_entry_ops[entry->type].validate(c, jset, entry,
+ version, big_endian, flags)
: 0;
}
struct jset_entry *entry)
{
if (entry->type < BCH_JSET_ENTRY_NR) {
- pr_buf(out, "%s: ", bch2_jset_entry_types[entry->type]);
+ prt_printf(out, "%s: ", bch2_jset_entry_types[entry->type]);
bch2_jset_entry_ops[entry->type].to_text(out, c, entry);
} else {
- pr_buf(out, "(unknown type %u)", entry->type);
+ prt_printf(out, "(unknown type %u)", entry->type);
}
}
static int jset_validate_entries(struct bch_fs *c, struct jset *jset,
- int write)
+ enum bkey_invalid_flags flags)
{
- char buf[100];
- struct jset_entry *entry;
+ unsigned version = le32_to_cpu(jset->version);
int ret = 0;
vstruct_for_each(jset, entry) {
- scnprintf(buf, sizeof(buf), "jset %llu entry offset %zi/%u",
- le64_to_cpu(jset->seq),
- (u64 *) entry - jset->_data,
- le32_to_cpu(jset->u64s));
-
- if (journal_entry_err_on(vstruct_next(entry) >
- vstruct_last(jset), c,
+ 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, buf, entry,
- le32_to_cpu(jset->version),
- JSET_BIG_ENDIAN(jset), write);
+ ret = bch2_journal_entry_validate(c, jset, entry,
+ 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,
- unsigned bucket_sectors_left,
- unsigned sectors_read,
- int write)
+ enum bkey_invalid_flags flags)
{
- size_t bytes = vstruct_bytes(jset);
- struct bch_csum csum;
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,
- "%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;
+ return -EINVAL;
}
- if (bytes > (sectors_read << 9) &&
- sectors_read < bucket_sectors_left)
- return JOURNAL_ENTRY_REREAD;
-
- if (journal_entry_err_on(bytes > bucket_sectors_left << 9, c,
- "%s sector %llu seq %llu: journal entry too big (%zu bytes)",
- ca ? ca->name : c->name,
- sector, le64_to_cpu(jset->seq), bytes)) {
- ret = JOURNAL_ENTRY_BAD;
- le32_add_cpu(&jset->u64s,
- -((bytes - (bucket_sectors_left << 9)) / 8));
- }
-
- if (journal_entry_err_on(!bch2_checksum_type_valid(c, JSET_CSUM_TYPE(jset)), c,
+ if (journal_entry_err_on(!bch2_checksum_type_valid(c, JSET_CSUM_TYPE(jset)),
+ 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),
- JSET_CSUM_TYPE(jset))) {
- ret = JOURNAL_ENTRY_BAD;
- goto csum_done;
- }
-
- if (write)
- goto csum_done;
-
- csum = csum_vstruct(c, JSET_CSUM_TYPE(jset), journal_nonce(jset), jset);
- if (journal_entry_err_on(bch2_crc_cmp(csum, jset->csum), c,
- "%s sector %llu seq %llu: journal checksum bad",
- ca ? ca->name : c->name,
- sector, le64_to_cpu(jset->seq)))
+ JSET_CSUM_TYPE(jset)))
ret = JOURNAL_ENTRY_BAD;
- bch2_encrypt(c, JSET_CSUM_TYPE(jset), journal_nonce(jset),
- jset->encrypted_start,
- vstruct_end(jset) - (void *) jset->encrypted_start);
-csum_done:
/* 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,
+ le64_to_cpu(jset->last_seq) > le64_to_cpu(jset->seq),
+ 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))) {
jset->last_seq = jset->seq;
return JOURNAL_ENTRY_BAD;
}
+
+ ret = jset_validate_entries(c, jset, flags);
fsck_err:
return ret;
}
-static int jset_validate_for_write(struct bch_fs *c, struct jset *jset)
+static int jset_validate_early(struct bch_fs *c,
+ struct bch_dev *ca,
+ struct jset *jset, u64 sector,
+ unsigned bucket_sectors_left,
+ unsigned sectors_read)
{
- unsigned sectors = vstruct_sectors(jset, c->block_bits);
+ size_t bytes = vstruct_bytes(jset);
+ unsigned version;
+ 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(!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),
+ BCH_VERSION_MAJOR(version),
+ BCH_VERSION_MINOR(version))) {
+ /* don't try to continue: */
+ return -EINVAL;
+ }
+
+ if (bytes > (sectors_read << 9) &&
+ sectors_read < bucket_sectors_left)
+ return JOURNAL_ENTRY_REREAD;
- return jset_validate(c, NULL, jset, 0, sectors, sectors, WRITE) ?:
- jset_validate_entries(c, jset, WRITE);
+ if (journal_entry_err_on(bytes > bucket_sectors_left << 9,
+ 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))
+ le32_add_cpu(&jset->u64s,
+ -((bytes - (bucket_sectors_left << 9)) / 8));
+fsck_err:
+ return ret;
}
struct journal_read_buf {
/* 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);
+ n = kvmalloc(new_size, GFP_KERNEL);
if (!n)
- return -ENOMEM;
+ return -BCH_ERR_ENOMEM_journal_read_buf_realloc;
- kvpfree(b->data, b->size);
+ kvfree(b->data);
b->data = n;
b->size = new_size;
return 0;
unsigned sectors, sectors_read = 0;
u64 offset = bucket_to_sector(ca, ja->buckets[bucket]),
end = offset + ca->mi.bucket_size;
- bool saw_bad = false;
+ bool saw_bad = false, csum_good;
+ struct printbuf err = PRINTBUF;
int ret = 0;
pr_debug("reading %u", bucket);
while (offset < end) {
if (!sectors_read) {
struct bio *bio;
+ unsigned nr_bvecs;
reread:
sectors_read = min_t(unsigned,
end - offset, buf->size >> 9);
+ nr_bvecs = buf_pages(buf->data, sectors_read << 9);
+
+ bio = bio_kmalloc(nr_bvecs, GFP_KERNEL);
+ bio_init(bio, ca->disk_sb.bdev, bio->bi_inline_vecs, nr_bvecs, REQ_OP_READ);
- bio = bio_kmalloc(GFP_KERNEL,
- buf_pages(buf->data,
- sectors_read << 9));
- bio_set_dev(bio, ca->disk_sb.bdev);
- bio->bi_iter.bi_sector = offset;
- bio_set_op_attrs(bio, REQ_OP_READ, 0);
+ bio->bi_iter.bi_sector = offset;
bch2_bio_map(bio, buf->data, sectors_read << 9);
ret = submit_bio_wait(bio);
- bio_put(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")) {
* found on a different device, and missing or
* no journal entries will be handled later
*/
- return 0;
+ goto out;
}
j = buf->data;
}
- ret = jset_validate(c, ca, j, offset,
- end - offset, sectors_read,
- READ);
+ ret = jset_validate_early(c, ca, j, offset,
+ end - offset, sectors_read);
switch (ret) {
- case BCH_FSCK_OK:
+ case 0:
sectors = vstruct_sectors(j, c->block_bits);
break;
case JOURNAL_ENTRY_REREAD:
ret = journal_read_buf_realloc(buf,
vstruct_bytes(j));
if (ret)
- return ret;
+ goto err;
}
goto reread;
case JOURNAL_ENTRY_NONE:
if (!saw_bad)
- return 0;
- sectors = block_sectors(c);
- goto next_block;
- case JOURNAL_ENTRY_BAD:
- saw_bad = true;
+ goto out;
/*
* On checksum error we don't really trust the size
* field of the journal entry we read, so try reading
* again at next block boundary:
*/
sectors = block_sectors(c);
- break;
+ goto next_block;
default:
- return ret;
+ goto err;
}
/*
* bucket:
*/
if (le64_to_cpu(j->seq) < ja->bucket_seq[bucket])
- return 0;
+ goto out;
ja->bucket_seq[bucket] = le64_to_cpu(j->seq);
+ enum bch_csum_type csum_type = JSET_CSUM_TYPE(j);
+ struct bch_csum csum;
+ csum_good = jset_csum_good(c, j, &csum);
+
+ if (bch2_dev_io_err_on(!csum_good, ca, BCH_MEMBER_ERROR_checksum,
+ "%s",
+ (printbuf_reset(&err),
+ prt_str(&err, "journal "),
+ bch2_csum_err_msg(&err, csum_type, j->csum, csum),
+ err.buf)))
+ saw_bad = true;
+
+ ret = bch2_encrypt(c, JSET_CSUM_TYPE(j), journal_nonce(j),
+ j->encrypted_start,
+ vstruct_end(j) - (void *) j->encrypted_start);
+ bch2_fs_fatal_err_on(ret, c,
+ "error decrypting journal entry: %s",
+ bch2_err_str(ret));
+
mutex_lock(&jlist->lock);
- ret = journal_entry_add(c, ca, (struct bch_extent_ptr) {
- .dev = ca->dev_idx,
- .offset = offset,
- }, jlist, j, ret != 0);
+ ret = journal_entry_add(c, ca, (struct journal_ptr) {
+ .csum_good = csum_good,
+ .dev = ca->dev_idx,
+ .bucket = bucket,
+ .bucket_offset = offset -
+ bucket_to_sector(ca, ja->buckets[bucket]),
+ .sector = offset,
+ }, jlist, j);
mutex_unlock(&jlist->lock);
switch (ret) {
case JOURNAL_ENTRY_ADD_OUT_OF_RANGE:
break;
default:
- return ret;
+ goto err;
}
next_block:
pr_debug("next");
j = ((void *) j) + (sectors << 9);
}
- return 0;
+out:
+ ret = 0;
+err:
+ printbuf_exit(&err);
+ return ret;
}
-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 =
container_of(cl->parent, struct journal_list, cl);
+ 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;
+ ja->sectors_free = ca->mi.bucket_size;
- min_seq = min(ja->bucket_seq[i], min_seq);
+ mutex_lock(&jlist->lock);
+ genradix_for_each_reverse(&c->journal_entries, iter, _r) {
+ r = *_r;
+
+ if (!r)
+ continue;
+
+ darray_for_each(r->ptrs, i)
+ if (i->dev == ca->dev_idx) {
+ unsigned wrote = bucket_remainder(ca, i->sector) +
+ vstruct_sectors(&r->j, c->block_bits);
+
+ ja->cur_idx = i->bucket;
+ ja->sectors_free = ca->mi.bucket_size - wrote;
+ goto found;
+ }
}
+found:
+ mutex_unlock(&jlist->lock);
- /*
- * 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;
+ 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;
- ja->sectors_free = 0;
+ bch_err(c, "bucket_seq[%u] = %llu", idx, ja->bucket_seq[idx]);
+ }
+#endif
+ ja->sectors_free = 0;
+ }
/*
* Set dirty_idx to indicate the entire journal is full and needs to be
ja->dirty_idx = (ja->cur_idx + 1) % ja->nr;
out:
bch_verbose(c, "journal read done on device %s, ret %i", ca->name, ret);
- kvpfree(buf.data, buf.size);
+ kvfree(buf.data);
percpu_ref_put(&ca->io_ref);
closure_return(cl);
return;
goto out;
}
-static void bch2_journal_ptrs_to_text(struct printbuf *out, struct bch_fs *c,
- struct journal_replay *j)
-{
- unsigned i;
-
- for (i = 0; i < j->nr_ptrs; i++) {
- struct bch_dev *ca = bch_dev_bkey_exists(c, j->ptrs[i].dev);
- u64 offset;
-
- div64_u64_rem(j->ptrs[i].offset, ca->mi.bucket_size, &offset);
-
- if (i)
- pr_buf(out, " ");
- pr_buf(out, "%u:%llu (offset %llu)",
- j->ptrs[i].dev,
- (u64) j->ptrs[i].offset, offset);
- }
-}
-
-int bch2_journal_read(struct bch_fs *c, struct list_head *list,
- 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, *t;
- struct bch_dev *ca;
- unsigned iter;
- size_t keys = 0, entries = 0;
- bool degraded = false;
- u64 seq, last_seq = 0;
+ struct journal_replay *i, **_i, *prev = NULL;
+ struct genradix_iter radix_iter;
+ struct printbuf buf = PRINTBUF;
+ bool degraded = false, last_write_torn = false;
+ u64 seq;
int ret = 0;
closure_init_stack(&jlist.cl);
mutex_init(&jlist.lock);
- jlist.head = list;
+ jlist.last_seq = 0;
jlist.ret = 0;
- for_each_member_device(ca, c, iter) {
- if (!test_bit(BCH_FS_REBUILD_REPLICAS, &c->flags) &&
+ 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;
- if (list_empty(list)) {
- bch_info(c, "journal read done, but no entries found");
- return 0;
- }
-
- i = list_last_entry(list, struct journal_replay, list);
- *start_seq = le64_to_cpu(i->j.seq) + 1;
+ *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:
*/
- list_for_each_entry_safe_reverse(i, t, list, list) {
- if (i->ignore)
+ genradix_for_each_reverse(&c->journal_entries, radix_iter, _i) {
+ enum bkey_invalid_flags flags = BKEY_INVALID_JOURNAL;
+
+ i = *_i;
+
+ if (!i || i->ignore)
continue;
- if (!JSET_NO_FLUSH(&i->j)) {
- last_seq = le64_to_cpu(i->j.last_seq);
- *blacklist_seq = le64_to_cpu(i->j.seq) + 1;
- break;
+ if (!*start_seq)
+ *blacklist_seq = *start_seq = le64_to_cpu(i->j.seq) + 1;
+
+ if (JSET_NO_FLUSH(&i->j)) {
+ i->ignore = true;
+ continue;
+ }
+
+ if (!last_write_torn && !i->csum_good) {
+ last_write_torn = true;
+ i->ignore = true;
+ continue;
}
- journal_replay_free(c, i);
+ if (journal_entry_err_on(le64_to_cpu(i->j.last_seq) > le64_to_cpu(i->j.seq),
+ 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);
+ *blacklist_seq = le64_to_cpu(i->j.seq) + 1;
+ break;
}
- if (!last_seq) {
- fsck_err(c, "journal read done, but no entries found after dropping non-flushes");
- return -1;
+ if (!*start_seq) {
+ bch_info(c, "journal read done, but no entries found");
+ return 0;
}
+ 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);
+
+ if (*start_seq != *blacklist_seq)
+ bch_info(c, "dropped unflushed entries %llu-%llu",
+ *blacklist_seq, *start_seq - 1);
+
/* Drop blacklisted entries and entries older than last_seq: */
- list_for_each_entry_safe(i, t, list, list) {
- if (i->ignore)
+ genradix_for_each(&c->journal_entries, radix_iter, _i) {
+ i = *_i;
+
+ if (!i || i->ignore)
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;
- list_for_each_entry(i, list, list) {
- if (i->ignore)
+ seq = *last_seq;
+ genradix_for_each(&c->journal_entries, radix_iter, _i) {
+ i = *_i;
+
+ if (!i || i->ignore)
continue;
BUG_ON(seq > le64_to_cpu(i->j.seq));
while (seq < le64_to_cpu(i->j.seq)) {
u64 missing_start, missing_end;
- char buf1[200], buf2[200];
+ struct printbuf buf1 = PRINTBUF, buf2 = PRINTBUF;
while (seq < le64_to_cpu(i->j.seq) &&
bch2_journal_seq_is_blacklisted(c, seq, false))
!bch2_journal_seq_is_blacklisted(c, seq, false))
seq++;
- if (i->list.prev != list) {
- struct printbuf out = PBUF(buf1);
- struct journal_replay *p = list_prev_entry(i, list);
-
- bch2_journal_ptrs_to_text(&out, c, p);
- pr_buf(&out, " size %llu", vstruct_sectors(&p->j, c->block_bits));
+ if (prev) {
+ bch2_journal_ptrs_to_text(&buf1, c, prev);
+ prt_printf(&buf1, " size %zu", vstruct_sectors(&prev->j, c->block_bits));
} else
- sprintf(buf1, "(none)");
- bch2_journal_ptrs_to_text(&PBUF(buf2), c, i);
+ prt_printf(&buf1, "(none)");
+ 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,
- buf1, buf2);
+ *last_seq, *blacklist_seq - 1,
+ buf1.buf, buf2.buf);
+
+ printbuf_exit(&buf1);
+ printbuf_exit(&buf2);
}
+ prev = i;
seq++;
}
- list_for_each_entry(i, list, list) {
- struct jset_entry *entry;
- struct bkey_i *k, *_n;
+ genradix_for_each(&c->journal_entries, radix_iter, _i) {
struct bch_replicas_padded replicas = {
.e.data_type = BCH_DATA_journal,
.e.nr_required = 1,
};
- unsigned ptr;
- char buf[80];
- if (i->ignore)
+ i = *_i;
+ if (!i || i->ignore)
continue;
- ret = jset_validate_entries(c, &i->j, READ);
+ darray_for_each(i->ptrs, ptr) {
+ struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+
+ if (!ptr->csum_good)
+ bch_err_dev_offset(ca, ptr->sector,
+ "invalid journal checksum, seq %llu%s",
+ le64_to_cpu(i->j.seq),
+ i->csum_good ? " (had good copy on another device)" : "");
+ }
+
+ ret = jset_validate(c,
+ bch_dev_bkey_exists(c, i->ptrs.data[0].dev),
+ &i->j,
+ i->ptrs.data[0].sector,
+ READ);
if (ret)
- goto fsck_err;
+ goto err;
- for (ptr = 0; ptr < i->nr_ptrs; ptr++)
- replicas.e.devs[replicas.e.nr_devs++] = i->ptrs[ptr].dev;
+ darray_for_each(i->ptrs, ptr)
+ replicas.e.devs[replicas.e.nr_devs++] = ptr->dev;
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 &&
- (test_bit(BCH_FS_REBUILD_REPLICAS, &c->flags) ||
- fsck_err_on(!bch2_replicas_marked(c, &replicas.e), c,
- "superblock not marked as containing replicas %s",
- (bch2_replicas_entry_to_text(&PBUF(buf),
- &replicas.e), 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)
- return ret;
+ goto err;
}
-
- for_each_jset_key(k, _n, entry, &i->j)
- keys++;
- entries++;
}
-
- bch_info(c, "journal read done, %zu keys in %zu entries, seq %llu",
- keys, entries, *start_seq);
-
- if (*start_seq != *blacklist_seq)
- bch_info(c, "dropped unflushed entries %llu-%llu",
- *blacklist_seq, *start_seq - 1);
+err:
fsck_err:
+ printbuf_exit(&buf);
return ret;
}
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 =
READ_ONCE(c->opts.metadata_replicas);
+ unsigned replicas_need = min_t(unsigned, replicas_want,
+ READ_ONCE(c->opts.metadata_replicas_required));
rcu_read_lock();
retry:
BUG_ON(bkey_val_u64s(&w->key.k) > BCH_REPLICAS_MAX);
- return replicas >= c->opts.metadata_replicas_required ? 0 : -EROFS;
-}
-
-static void journal_write_compact(struct jset *jset)
-{
- struct jset_entry *i, *next, *prev = NULL;
-
- /*
- * Simple compaction, dropping empty jset_entries (from journal
- * reservations that weren't fully used) and merging jset_entries that
- * can be.
- *
- * 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_safe(jset, i, next) {
- unsigned u64s = le16_to_cpu(i->u64s);
-
- /* Empty entry: */
- if (!u64s)
- continue;
-
- /* Can we merge with previous entry? */
- if (prev &&
- i->btree_id == prev->btree_id &&
- i->level == prev->level &&
- i->type == prev->type &&
- i->type == BCH_JSET_ENTRY_btree_keys &&
- le16_to_cpu(prev->u64s) + u64s <= U16_MAX) {
- memmove_u64s_down(vstruct_next(prev),
- i->_data,
- u64s);
- le16_add_cpu(&prev->u64s, u64s);
- continue;
- }
-
- /* Couldn't merge, move i into new position (after prev): */
- prev = prev ? vstruct_next(prev) : jset->start;
- if (i != prev)
- memmove_u64s_down(prev, i, jset_u64s(u64s));
- }
-
- prev = prev ? vstruct_next(prev) : jset->start;
- jset->u64s = cpu_to_le32((u64 *) prev - jset->_data);
+ return replicas >= replicas_need ? 0 : -EROFS;
}
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 = kvmalloc(new_size, GFP_NOFS|__GFP_NOWARN);
if (!new_buf)
return;
swap(buf->buf_size, new_size);
spin_unlock(&j->lock);
- kvpfree(new_buf, new_size);
+ kvfree(new_buf);
}
static inline struct journal_buf *journal_last_unwritten_buf(struct journal *j)
{
- return j->buf + j->reservations.unwritten_idx;
+ 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(w, struct journal_buf, io);
+ struct journal *j = container_of(w, struct journal, buf[w->idx]);
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;
union journal_res_state old, new;
- u64 v, seq;
+ u64 v, seq = le64_to_cpu(w->data->seq);
int err = 0;
- bch2_time_stats_update(!JSET_NO_FLUSH(w->data)
- ? j->flush_write_time
- : j->noflush_write_time, j->write_start_time);
+ time_stats_update(!JSET_NO_FLUSH(w->data)
+ ? j->flush_write_time
+ : j->noflush_write_time, j->write_start_time);
if (!w->devs_written.nr) {
bch_err(c, "unable to write journal to sufficient devices");
if (err)
bch2_fatal_error(c);
- spin_lock(&j->lock);
- seq = le64_to_cpu(w->data->seq);
+ closure_debug_destroy(cl);
+ spin_lock(&j->lock);
if (seq >= j->pin.front)
journal_seq_pin(j, seq)->devs = w->devs_written;
+ if (err && (!j->err_seq || seq < j->err_seq))
+ j->err_seq = seq;
+ w->write_done = true;
- if (!err) {
- j->seq_ondisk = seq;
+ bool completed = false;
- if (!JSET_NO_FLUSH(w->data)) {
+ for (seq = journal_last_unwritten_seq(j);
+ seq <= journal_cur_seq(j);
+ seq++) {
+ w = j->buf + (seq & JOURNAL_BUF_MASK);
+ if (!w->write_done)
+ break;
+
+ if (!j->err_seq && !JSET_NO_FLUSH(w->data)) {
j->flushed_seq_ondisk = seq;
j->last_seq_ondisk = w->last_seq;
+
+ 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;
- /*
- * Updating last_seq_ondisk may let bch2_journal_reclaim_work() discard
- * more buckets:
- *
- * Must come before signaling write completion, for
- * bch2_fs_journal_stop():
- */
- journal_reclaim_kick(&c->journal);
+ j->seq_ondisk = seq;
- /* also must come before signalling write completion: */
- closure_debug_destroy(cl);
+ /*
+ * Updating last_seq_ondisk may let bch2_journal_reclaim_work() discard
+ * more buckets:
+ *
+ * Must come before signaling write completion, for
+ * bch2_fs_journal_stop():
+ */
+ if (j->watermark != BCH_WATERMARK_stripe)
+ journal_reclaim_kick(&c->journal);
- v = atomic64_read(&j->reservations.counter);
- do {
- old.v = new.v = v;
- BUG_ON(new.idx == new.unwritten_idx);
+ v = atomic64_read(&j->reservations.counter);
+ do {
+ old.v = new.v = v;
+ BUG_ON(journal_state_count(new, new.unwritten_idx));
+ BUG_ON(new.unwritten_idx != (seq & JOURNAL_BUF_MASK));
- new.unwritten_idx++;
- } while ((v = atomic64_cmpxchg(&j->reservations.counter,
- old.v, new.v)) != old.v);
+ new.unwritten_idx++;
+ } while ((v = atomic64_cmpxchg(&j->reservations.counter, old.v, new.v)) != old.v);
- bch2_journal_space_available(j);
+ completed = true;
+ }
- closure_wake_up(&w->wait);
- journal_wake(j);
+ if (completed) {
+ bch2_journal_reclaim_fast(j);
+ bch2_journal_space_available(j);
- if (test_bit(JOURNAL_NEED_WRITE, &j->flags))
- mod_delayed_work(c->io_complete_wq, &j->write_work, 0);
- spin_unlock(&j->lock);
+ track_event_change(&c->times[BCH_TIME_blocked_journal_max_in_flight], false);
+
+ closure_wake_up(&w->wait);
+ journal_wake(j);
+ }
- if (new.unwritten_idx != new.idx &&
- !journal_state_count(new, new.unwritten_idx))
- closure_call(&j->io, bch2_journal_write, c->io_complete_wq, NULL);
+ if (journal_last_unwritten_seq(j) == journal_cur_seq(j) &&
+ new.cur_entry_offset < JOURNAL_ENTRY_CLOSED_VAL) {
+ struct journal_buf *buf = journal_cur_buf(j);
+ long delta = buf->expires - jiffies;
+
+ /*
+ * We don't close a journal entry to write it while there's
+ * previous entries still in flight - the current journal entry
+ * might want to be written now:
+ */
+ mod_delayed_work(j->wq, &j->write_work, max(0L, delta));
+ }
+
+ spin_unlock(&j->lock);
}
static void journal_write_endio(struct bio *bio)
{
- struct bch_dev *ca = bio->bi_private;
+ struct journal_bio *jbio = container_of(bio, struct journal_bio, bio);
+ struct bch_dev *ca = jbio->ca;
struct journal *j = &ca->fs->journal;
- struct journal_buf *w = journal_last_unwritten_buf(j);
- unsigned long flags;
+ struct journal_buf *w = j->buf + jbio->buf_idx;
- 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")) {
+ unsigned long flags;
+
spin_lock_irqsave(&j->err_lock, flags);
bch2_dev_list_drop_dev(&w->devs_written, ca->dev_idx);
spin_unlock_irqrestore(&j->err_lock, flags);
}
- closure_put(&j->io);
+ closure_put(&w->io);
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(w, struct journal_buf, io);
+ struct journal *j = container_of(w, struct journal, buf[w->idx]);
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 bch_extent_ptr *ptr;
- struct bio *bio;
unsigned sectors = vstruct_sectors(w->data, c->block_bits);
extent_for_each_ptr(bkey_i_to_s_extent(&w->key), ptr) {
- ca = bch_dev_bkey_exists(c, ptr->dev);
+ struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev);
+ struct journal_device *ja = &ca->journal;
+
if (!percpu_ref_tryget(&ca->io_ref)) {
/* XXX: fix this */
bch_err(c, "missing device for journal write\n");
this_cpu_add(ca->io_done->sectors[WRITE][BCH_DATA_journal],
sectors);
- bio = ca->journal.bio;
- bio_reset(bio);
- bio_set_dev(bio, ca->disk_sb.bdev);
+ struct bio *bio = &ja->bio[w->idx]->bio;
+ bio_reset(bio, ca->disk_sb.bdev, REQ_OP_WRITE|REQ_SYNC|REQ_META);
bio->bi_iter.bi_sector = ptr->offset;
bio->bi_end_io = journal_write_endio;
bio->bi_private = ca;
- bio->bi_opf = REQ_OP_WRITE|REQ_SYNC|REQ_META;
BUG_ON(bio->bi_iter.bi_sector == ca->prev_journal_sector);
ca->prev_journal_sector = bio->bi_iter.bi_sector;
bch2_bio_map(bio, w->data, sectors << 9);
- trace_journal_write(bio);
+ trace_and_count(c, journal_write, bio);
closure_bio_submit(bio, cl);
- ca->journal.bucket_seq[ca->journal.cur_idx] =
- le64_to_cpu(w->data->seq);
+ ja->bucket_seq[ja->cur_idx] = le64_to_cpu(w->data->seq);
}
- continue_at(cl, journal_write_done, c->io_complete_wq);
- return;
+ continue_at(cl, journal_write_done, j->wq);
}
-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;
- char *journal_debug_buf = NULL;
+ 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();
+ /*
+ * Simple compaction, dropping empty jset_entries (from journal
+ * reservations that weren't fully used) and merging jset_entries that
+ * can be.
+ *
+ * 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);
- spin_lock(&j->lock);
- if (c->sb.features & (1ULL << BCH_FEATURE_journal_no_flush) &&
- (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;
+ /* Empty entry: */
+ if (!u64s)
+ continue;
- j->nr_noflush_writes++;
- } else {
- j->last_flush_write = jiffies;
- j->nr_flush_writes++;
+ /*
+ * 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;
+ }
}
- 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
- *
- * 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 (wb.wb)
+ bch2_journal_keys_to_write_buffer_end(c, &wb);
- bch2_journal_entries_to_btree_roots(c, jset);
+ spin_lock(&c->journal.lock);
+ w->need_flush_to_write_buffer = false;
+ spin_unlock(&c->journal.lock);
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));
+ struct jset_entry_datetime *d =
+ container_of(jset_entry_init(&end, sizeof(*d)), struct jset_entry_datetime, entry);
+ d->entry.type = BCH_JSET_ENTRY_datetime;
+ d->seconds = cpu_to_le64(ktime_get_real_seconds());
+
+ 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);
- journal_write_compact(jset);
+ 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_new_versioning
- ? 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_for_write(c, jset))
- goto err;
+ (ret = jset_validate(c, NULL, jset, 0, WRITE)))
+ return ret;
- bch2_encrypt(c, JSET_CSUM_TYPE(jset), journal_nonce(jset),
+ 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))
+ return ret;
jset->csum = csum_vstruct(c, JSET_CSUM_TYPE(jset),
journal_nonce(jset), jset);
if (!validate_before_checksum &&
- jset_validate_for_write(c, jset))
- 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(w, struct journal_buf, io);
+ struct journal *j = container_of(w, struct journal, buf[w->idx]);
+ struct bch_fs *c = container_of(j, struct bch_fs, journal);
+ struct bch_replicas_padded replicas;
+ struct printbuf journal_debug_buf = PRINTBUF;
+ unsigned nr_rw_members = 0;
+ int ret;
+
+ for_each_rw_member(c, ca)
+ nr_rw_members++;
+
+ BUG_ON(BCH_SB_CLEAN(c->disk_sb.sb));
+ BUG_ON(!w->write_started);
+ BUG_ON(w->write_allocated);
+ BUG_ON(w->write_done);
+
+ j->write_start_time = local_clock();
-retry_alloc:
spin_lock(&j->lock);
- ret = journal_write_alloc(j, w, sectors);
+ if (nr_rw_members > 1)
+ w->separate_flush = true;
+
+ 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) {
- journal_debug_buf = kmalloc(4096, GFP_ATOMIC);
- if (journal_debug_buf)
- __bch2_journal_debug_to_text(&_PBUF(journal_debug_buf, 4096), j);
+ __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;
}
/*
* bch2_journal_space_available():
*/
w->sectors = 0;
+ w->write_allocated = true;
/*
* journal entry has been compacted and allocated, recalculate space
* available:
*/
bch2_journal_space_available(j);
+ bch2_journal_do_writes(j);
spin_unlock(&j->lock);
- if (ret) {
- bch_err(c, "Unable to allocate journal write:\n%s",
- journal_debug_buf);
- kfree(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 (test_bit(JOURNAL_NOCHANGES, &j->flags))
+ if (c->opts.nochanges)
goto no_io;
- for_each_rw_member(ca, c, i)
- nr_rw_members++;
+ /*
+ * 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 (nr_rw_members > 1)
- w->separate_flush = true;
+ if (!JSET_NO_FLUSH(w->data))
+ closure_wait_event(&j->async_wait, j->seq_ondisk + 1 == le64_to_cpu(w->data->seq));
- if (!JSET_NO_FLUSH(jset) && w->separate_flush) {
- for_each_rw_member(ca, c, i) {
+ 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;
- bio_reset(bio);
- bio_set_dev(bio, ca->disk_sb.bdev);
- bio->bi_opf = REQ_OP_FLUSH;
+ struct journal_device *ja = &ca->journal;
+ struct bio *bio = &ja->bio[w->idx]->bio;
+ bio_reset(bio, ca->disk_sb.bdev,
+ REQ_OP_WRITE|REQ_SYNC|REQ_META|REQ_PREFLUSH);
bio->bi_end_io = journal_write_endio;
bio->bi_private = ca;
closure_bio_submit(bio, cl);
}
}
- continue_at(cl, do_journal_write, c->io_complete_wq);
+ continue_at(cl, do_journal_write, j->wq);
return;
no_io:
- continue_at(cl, journal_write_done, c->io_complete_wq);
+ continue_at(cl, journal_write_done, j->wq);
return;
err:
bch2_fatal_error(c);
- continue_at(cl, journal_write_done, c->io_complete_wq);
+ continue_at(cl, journal_write_done, j->wq);
}
projects / bcachefs-tools-debian / blobdiff