diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-04-26 00:32:56 -0400 |
---|---|---|
committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-04-26 02:03:00 -0400 |
commit | dc6db4dd69aa5af106fc6239529911aea9a936fe (patch) | |
tree | c49750c0801c97d8421a98282b50d719a998b992 | |
parent | 2c27ffcdbce6743c82a5de2214a9beb22cd48eb8 (diff) |
bcachefs: bch_member.last_journal_bucket
On recovery from clean shutdown we don't typically read the journal, but
we still want to avoid overwriting existing entries in the journal for
list_journal debugging.
Thus, add some fields to the member info section so we can remember
where we left off.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
-rw-r--r-- | fs/bcachefs/bcachefs_format.h | 7 | ||||
-rw-r--r-- | fs/bcachefs/journal_io.c | 28 | ||||
-rw-r--r-- | fs/bcachefs/journal_io.h | 3 | ||||
-rw-r--r-- | fs/bcachefs/recovery.c | 2 | ||||
-rw-r--r-- | fs/bcachefs/sb-clean.c | 2 |
5 files changed, 42 insertions, 0 deletions
diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h index f7fbfccd2b1e..24bceb344941 100644 --- a/fs/bcachefs/bcachefs_format.h +++ b/fs/bcachefs/bcachefs_format.h @@ -589,6 +589,13 @@ struct bch_member { __le64 errors_reset_time; __le64 seq; __le64 btree_allocated_bitmap; + /* + * On recovery from a clean shutdown we don't normally read the journal, + * but we still want to resume writing from where we left off so we + * don't overwrite more than is necessary, for list journal debugging: + */ + __le32 last_journal_bucket; + __le32 last_journal_bucket_offset; }; #define BCH_MEMBER_V1_BYTES 56 diff --git a/fs/bcachefs/journal_io.c b/fs/bcachefs/journal_io.c index 98cf9a65216f..f3c5e9a423fd 100644 --- a/fs/bcachefs/journal_io.c +++ b/fs/bcachefs/journal_io.c @@ -17,6 +17,34 @@ #include "sb-clean.h" #include "trace.h" +void bch2_journal_pos_from_member_info_set(struct bch_fs *c) +{ + lockdep_assert_held(&c->sb_lock); + + for_each_member_device(c, ca) { + struct bch_member *m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx); + + m->last_journal_bucket = cpu_to_le32(ca->journal.cur_idx); + m->last_journal_bucket_offset = cpu_to_le32(ca->mi.bucket_size - ca->journal.sectors_free); + } +} + +void bch2_journal_pos_from_member_info_resume(struct bch_fs *c) +{ + mutex_lock(&c->sb_lock); + for_each_member_device(c, ca) { + struct bch_member m = bch2_sb_member_get(c->disk_sb.sb, ca->dev_idx); + + unsigned idx = le32_to_cpu(m.last_journal_bucket); + if (idx < ca->journal.nr) + ca->journal.cur_idx = idx; + unsigned offset = le32_to_cpu(m.last_journal_bucket_offset); + if (offset <= ca->mi.bucket_size) + ca->journal.sectors_free = ca->mi.bucket_size - offset; + } + mutex_unlock(&c->sb_lock); +} + void bch2_journal_ptrs_to_text(struct printbuf *out, struct bch_fs *c, struct journal_replay *j) { diff --git a/fs/bcachefs/journal_io.h b/fs/bcachefs/journal_io.h index 4f1e763ab506..43cfed58ef33 100644 --- a/fs/bcachefs/journal_io.h +++ b/fs/bcachefs/journal_io.h @@ -4,6 +4,9 @@ #include "darray.h" +void bch2_journal_pos_from_member_info_set(struct bch_fs *); +void bch2_journal_pos_from_member_info_resume(struct bch_fs *); + struct journal_ptr { bool csum_good; u8 dev; diff --git a/fs/bcachefs/recovery.c b/fs/bcachefs/recovery.c index 2574f9931768..41b019e9bd9e 100644 --- a/fs/bcachefs/recovery.c +++ b/fs/bcachefs/recovery.c @@ -672,6 +672,8 @@ int bch2_fs_recovery(struct bch_fs *c) goto err; } + bch2_journal_pos_from_member_info_resume(c); + if (!c->sb.clean || c->opts.retain_recovery_info) { struct genradix_iter iter; struct journal_replay **i; diff --git a/fs/bcachefs/sb-clean.c b/fs/bcachefs/sb-clean.c index 844e5f6ace72..0d5316037841 100644 --- a/fs/bcachefs/sb-clean.c +++ b/fs/bcachefs/sb-clean.c @@ -376,6 +376,8 @@ void bch2_fs_mark_clean(struct bch_fs *c) goto out; } + bch2_journal_pos_from_member_info_set(c); + bch2_write_super(c); out: mutex_unlock(&c->sb_lock); |