From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q1OGpiFB069047 for ; Fri, 24 Feb 2012 10:51:45 -0600 Received: from greer.hardwarefreak.com (mo-65-41-216-221.sta.embarqhsd.net [65.41.216.221]) by cuda.sgi.com with ESMTP id taLvQAf1J9gLNA80 for ; Fri, 24 Feb 2012 08:51:43 -0800 (PST) Message-ID: <4F47C021.7010008@hardwarefreak.com> Date: Fri, 24 Feb 2012 10:51:45 -0600 From: Stan Hoeppner MIME-Version: 1.0 Subject: Re: creating a new 80 TB XFS References: <4F478818.4050803@cape-horn-eng.com> <20120224150805.243e4906@harpe.intellique.com> <4F47B020.4000202@cape-horn-eng.com> (sfid-20120224_171032_352286_A09775B9) <201202241720.23581.Martin@lichtvoll.de> In-Reply-To: <201202241720.23581.Martin@lichtvoll.de> Reply-To: stan@hardwarefreak.com 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: Martin Steigerwald Cc: xfs@oss.sgi.com On 2/24/2012 10:20 AM, Martin Steigerwald wrote: > Am Freitag, 24. Februar 2012 schrieb Richard Ems: >>>> MOUNT >>>> On mount I will use the options >>>> >>>> mount -o noatime,nobarrier,nofail,logbufs=8,logbsize=256k,inode64 >>>> /dev/sdX1 /mount_point >>> >>> >>> >>> I think that the logbufs/logbsize option matches the default here. >>> Use delaylog if applicable. See the xfs FAQ. >> >> Yes, if I trust the mount manual page, it states "The default value is >> 8 buffers for any recent kernel." . I suppose 3.2.6 is "a recent >> kernel", so this could be avoided, but having it explicitly on the >> mkfs.xfs line does not hurt, or? >> And for logbsize: "The default value for any recent kernel is 32768." >> >> But then at the end of the manual page for mount it says "December >> 2004", so how actual is this information? Can the default mount values >> be shown by running mount with some verbose and dry-run parameters? > > Does cat /proc/mounts show them? /proc/mounts is more detailed than mount > or mount -l. Vanilla kernel.org 3.2.6: ~$ cat /proc/mounts /dev/sda7 /samba xfs rw,relatime,attr2,delaylog,noquota 0 0 It doesn't show the default logbufs and logbsize values. I asked about this specific issue over a year ago, because the documentation is inconsistent, and you can't get the default values out of a running system. If you can I don't know how. If someone stated a method, I can't recall it. :( I do recall Dave, IIRC, saying something to the effect of 'just use the defaults, as they are 8 and 256K in recent kernels anyway'. That's not a direct quote, but my recollection. -- Stan _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs