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 p52GHKoe210139 for ; Thu, 2 Jun 2011 11:17:22 -0500 Received: from greer.hardwarefreak.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 44E0F14E26B5 for ; Thu, 2 Jun 2011 09:17:19 -0700 (PDT) Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id Fx1R9bcrdeU0lxkb for ; Thu, 02 Jun 2011 09:17:19 -0700 (PDT) Message-ID: <4DE7B78C.4040608@hardwarefreak.com> Date: Thu, 02 Jun 2011 11:17:16 -0500 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: I/O hang, possibly XFS, possibly general References: In-Reply-To: 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: Paul Anderson Cc: xfs-oss On 6/2/2011 9:42 AM, Paul Anderson wrote: > had mounted the filesystem with inode64,largeio,logbufs=8,noatime. I don't see 'delaylog' in your mount options nor an external log device specified. Delayed logging will dramatically decrease IOPs to the log device via cleverly discarding duplicate metadata write operations and other tricks. Enabling it may solve your problem given your high metadata workload. Delayed logging design document: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=Documentation/filesystems/xfs-delayed-logging-design.txt Delaylog was an optional mount option from 2.6.35 to 2.6.38. In 2.6.39 and up it is the default. Give it a go. -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs