From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Wed, 18 Jun 2008 23:20:33 -0700 (PDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.168.28]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m5J6KV5q014464 for ; Wed, 18 Jun 2008 23:20:31 -0700 Received: from ipmail01.adl6.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id D879BCEE2CD for ; Wed, 18 Jun 2008 23:21:29 -0700 (PDT) Received: from ipmail01.adl6.internode.on.net (ipmail01.adl6.internode.on.net [203.16.214.146]) by cuda.sgi.com with ESMTP id sfcEPtG1Nb3qTrNE for ; Wed, 18 Jun 2008 23:21:29 -0700 (PDT) Date: Thu, 19 Jun 2008 16:21:18 +1000 From: Dave Chinner Subject: Re: open sleeps Message-ID: <20080619062118.GY3700@disturbed> References: <4859EE54.6050801@vpac.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4859EE54.6050801@vpac.org> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Brian May Cc: xfs@oss.sgi.com On Thu, Jun 19, 2008 at 03:27:48PM +1000, Brian May wrote: > Hello, > > I am having (weird) issues with XFS, in that open(...) on certain files > takes 45 seconds to return. After the file has been opened, the next > file in the same directory takes 45 seconds. If the file was recently > opened it returns immediately. > > I thought this was a low level I/O issue, so copied the files in > question to a completely independent RAID array (separate LVM, RAID, > controllers, disks), but the problem remains. > > More details at thread starting from > . > > Any ideas? # echo t > /proc/sysrq-trigger when it is hung to get a stack trace of the blocked open call. Cheers, Dave. -- Dave Chinner david@fromorbit.com