From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q1NAmw65097577 for ; Thu, 23 Feb 2012 04:48:59 -0600 Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by cuda.sgi.com with ESMTP id COXd4yFkoDtkcAZj (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Thu, 23 Feb 2012 02:48:56 -0800 (PST) Received: from relay2.suse.de (unknown [195.135.220.254]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 3D425906EB for ; Thu, 23 Feb 2012 11:48:54 +0100 (CET) Date: Thu, 23 Feb 2012 11:48:53 +0100 From: Jan Kara Subject: xlog_space_left: head behind tail Message-ID: <20120223104853.GA24638@quack.suse.cz> MIME-Version: 1.0 Content-Disposition: inline List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com Hello, when I run: while true; do ~/tests/xfstests-dev/ltp/fsstress -d /mnt -n 10000 -p 4; done and in parallel while true; do ./fsfreeze /mnt; sync; ./fsfreeze -u /mnt; sleep 3; done where fsfreeze is a small utility freezing and unfreezing filesystem. I get warnings like: [ 2029.103193] XFS (vdb1): xlog_space_left: head behind tail [ 2029.103195] tail_cycle = 10, tail_bytes = 6036480 [ 2029.103197] GH cycle = 10, GH bytes = 6035728 [ 2029.103218] XFS (vdb1): xlog_space_left: head behind tail [ 2029.103219] tail_cycle = 10, tail_bytes = 6036480 [ 2029.103220] GH cycle = 10, GH bytes = 6035728 [ 2033.269796] XFS (vdb1): xlog_space_left: head behind tail [ 2033.269800] tail_cycle = 10, tail_bytes = 6400512 [ 2033.269803] GH cycle = 10, GH bytes = 6399752 [ 2033.269830] XFS (vdb1): xlog_space_left: head behind tail [ 2033.269835] tail_cycle = 10, tail_bytes = 6400512 [ 2033.269838] GH cycle = 10, GH bytes = 6399752 [ 2033.269847] XFS (vdb1): xlog_space_left: head behind tail [ 2033.269850] tail_cycle = 10, tail_bytes = 6400512 [ 2033.269852] GH cycle = 10, GH bytes = 6399752 [ 2033.269892] XFS (vdb1): xlog_space_left: head behind tail [ 2033.269894] tail_cycle = 10, tail_bytes = 6400512 [ 2033.269896] GH cycle = 10, GH bytes = 6399752 [ 2033.269915] XFS (vdb1): xlog_space_left: head behind tail [ 2033.269918] tail_cycle = 10, tail_bytes = 6400512 [ 2033.269920] GH cycle = 10, GH bytes = 6399752 They usually start to appear like 20 minutes after starting the tests and when they start to appear they happen every couple of seconds (as you can see from the timestamps). Is it a real problem or just annoyance? Honza -- Jan Kara SUSE Labs, CR _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs