Re: [BUG] journal handler reference count breaked and fs deadlocked

[Alex Tomas]

what system did that time? mount options?

On Sun, 9 Nov 2003 23:34:00 +0200
Alex Lyashkov <shadow@xxxxxxxxxx> wrote:

> Hello All
> 
> I try locate what are point where fs deadlocked.
> after recompile kernel with debug jbd and set debug level to 100 i log kernel 
> via serial console
> after deadlock - i see in log
> ==============
> journal.c, 581): log_start_commit: JBD: requesting commit 501252/501251
> (journal.c, 608): log_wait_commit: JBD: want 501252, j_commit_sequence=501251
> (journal.c, 263): kjournald: kjournald wakes
> (journal.c, 238): kjournald: commit_sequence=501251, commit_request=501252
> (journal.c, 242): kjournald: OK, requests differ
> (commit.c, 81): journal_commit_transaction: JBD: starting commit of 
> transaction 501252
> (commit.c, 87): journal_commit_transaction: wait updates.......
> (transaction.c, 567): do_get_write_access: buffer_head c79f2e70, force_copy 0
> (revoke.c, 375): journal_cancel_revoke: journal_head c79f2e70, cancelling 
> revoke
> (transaction.c, 567): do_get_write_access: buffer_head c79f2e70, force_copy 0
> (revoke.c, 375): journal_cancel_revoke: journal_head c79f2e70, cancelling 
> revoke
> (transaction.c, 1104): journal_dirty_metadata: journal_head c79f2e70
> (transaction.c, 1392): journal_stop: h_ref 2 -> 1
> ==============
> i think it`s reason fs deadlocked, because wait query not be waked :-\
> if i right - it very big problem on ext3..
> other logs\infos can be created after request....
> 
> 
> -- 
> With best regards,
> Alex
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