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bcachefs: Better journal debug

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2019-02-26 14:28:08 -05:00 committed by Kent Overstreet
parent c8cc5b3e3f
commit 2d3b581039
1 changed files with 33 additions and 14 deletions
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47
fs/bcachefs/journal.c
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@ -1084,35 +1084,54 @@ ssize_t bch2_journal_print_debug(struct journal *j, char *buf)
{
struct printbuf out = _PBUF(buf, PAGE_SIZE);
struct bch_fs *c = container_of(j, struct bch_fs, journal);
union journal_res_state *s = &j->reservations;
union journal_res_state s;
struct bch_dev *ca;
unsigned iter;
rcu_read_lock();
spin_lock(&j->lock);
s = READ_ONCE(j->reservations);
pr_buf(&out,
"active journal entries:\t%llu\n"
"seq:\t\t\t%llu\n"
"last_seq:\t\t%llu\n"
"last_seq_ondisk:\t%llu\n"
"reservation count:\t%u\n"
"reservation offset:\t%u\n"
"current entry u64s:\t%u\n"
"io in flight:\t\t%i\n"
"need write:\t\t%i\n"
"dirty:\t\t\t%i\n"
"replay done:\t\t%i\n",
"current entry:\t\t",
fifo_used(&j->pin),
journal_cur_seq(j),
journal_last_seq(j),
j->last_seq_ondisk,
journal_state_count(*s, s->idx),
s->cur_entry_offset,
j->cur_entry_u64s,
s->prev_buf_unwritten,
j->last_seq_ondisk);
switch (s.cur_entry_offset) {
case JOURNAL_ENTRY_ERROR_VAL:
pr_buf(&out, "error\n");
break;
case JOURNAL_ENTRY_CLOSED_VAL:
pr_buf(&out, "closed\n");
break;
default:
pr_buf(&out, "%u/%u\n",
s.cur_entry_offset,
j->cur_entry_u64s);
break;
}
pr_buf(&out,
"current entry refs:\t%u\n"
"prev entry unwritten:\t",
journal_state_count(s, s.idx));
if (s.prev_buf_unwritten)
pr_buf(&out, "yes, ref %u\n",
journal_state_count(s, !s.idx));
else
pr_buf(&out, "no\n");
pr_buf(&out,
"need write:\t\t%i\n"
"replay done:\t\t%i\n",
test_bit(JOURNAL_NEED_WRITE, &j->flags),
journal_entry_is_open(j),
test_bit(JOURNAL_REPLAY_DONE, &j->flags));
for_each_member_device_rcu(ca, c, iter,