From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Wilhelms Damasio - Taghos Subject: Re: Ext4 flush blocked Date: Thu, 14 Jul 2011 22:27:50 -0300 Message-ID: <4E1F9796.5020107@taghos.com.br> References: <4E1F95B8.4050005@taghos.com.br> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: Theodore Ts'o , Andreas Dilger , linux-ext4@vger.kernel.org Return-path: Received: from gateway07.websitewelcome.com ([69.56.236.22]:59922 "HELO gateway07.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S932677Ab1GOBiR (ORCPT ); Thu, 14 Jul 2011 21:38:17 -0400 Received: from gator1481.hostgator.com (gator1481.hostgator.com [184.173.199.228]) by ham.websitewelcome.com (Postfix) with ESMTP id 87D8C7D804500 for ; Thu, 14 Jul 2011 20:28:00 -0500 (CDT) In-Reply-To: <4E1F95B8.4050005@taghos.com.br> Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi Again, Em 14/07/2011 22:19, Felipe Wilhelms Damasio - Taghos escreveu: > After a while using (about an hour) I get a lot of: > > INFO: task flush-8:16:6650 blocked for more than 120 seconds. I also saw this: INFO: task jbd2/sdb1-8:1672 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sdb1-8 D 0000000000000004 0 1672 2 0x00000000 ffff88042e171aa0 0000000000000046 0000000000012500 ffff88042e171fd8 ffff88042e171fd8 ffff88042c2eadf0 0000000000012500 0000000000012500 0000000000012500 ffff88042c2eadf0 ffff88042e0d0690 ffff88042c2eb098 Call Trace: [] io_schedule+0x7b/0xc2 [] sync_page+0x41/0x45 [] __wait_on_bit+0x47/0x79 [] ? sync_page+0x0/0x45 [] wait_on_page_bit+0x6e/0x75 [] ? wake_bit_function+0x0/0x2a [] ? pagevec_lookup_tag+0x22/0x2b [] write_cache_pages+0x1d5/0x2e9 [] ? __writepage+0x0/0x2f [] generic_writepages+0x1f/0x25 [] jbd2_journal_commit_transaction+0x35b/0x10b2 [] ? get_parent_ip+0x11/0x41 [] kjournald2+0xd2/0x22b [] ? autoremove_wake_function+0x0/0x38 [] ? _raw_spin_unlock_irqrestore+0x2c/0x37 [] ? kjournald2+0x0/0x22b [] kthread+0x7d/0x85 [] kernel_thread_helper+0x4/0x10 [] ? kthread+0x0/0x85 [] ? kernel_thread_helper+0x0/0x10 Don't know if this helps, though. Is there something I can try to fix this? Cheers, -- Felipe Wilhelms Damasio TAGHOS - Tecnologia Rua Prof. Alvaro Alvim, 211 Porto Alegre - RS - (51) 3239-3180 www.taghos.com.br