From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262745AbTKIVed (ORCPT ); Sun, 9 Nov 2003 16:34:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262746AbTKIVed (ORCPT ); Sun, 9 Nov 2003 16:34:33 -0500 Received: from [212.86.245.254] ([212.86.245.254]:48257 "EHLO umka.bear.com.ua") by vger.kernel.org with ESMTP id S262745AbTKIVea (ORCPT ); Sun, 9 Nov 2003 16:34:30 -0500 Content-Type: text/plain; charset=US-ASCII From: Alex Lyashkov Organization: Home To: Jan Kara Subject: [BUG] journal handler reference count breaked and fs deadlocked Date: Sun, 9 Nov 2003 23:34:00 +0200 User-Agent: KMail/1.4.1 Cc: Andrew Morton , linux-kernel@vger.kernel.org, Herbert Poetzl MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Message-Id: <200311092334.01957.shadow@itt.net.ru> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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