From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q1SA9GSZ173679 for ; Tue, 28 Feb 2012 04:09:17 -0600 Received: from busoni.debian.org (busoni.debian.org [140.211.15.34]) by cuda.sgi.com with ESMTP id i8CVW3Nj3yhdNt0d (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Tue, 28 Feb 2012 02:09:12 -0800 (PST) Subject: Bug#661580: mkfs.xfs fails to detect correct sector size Resent-To: debian-bugs-dist@lists.debian.org Resent-Message-ID: Date: Tue, 28 Feb 2012 04:11:51 -0500 From: Christoph Hellwig Message-ID: <20120228091151.GA24717@infradead.org> References: <20120228074914.31280.78231.reportbug@frosties.localnet> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20120228074914.31280.78231.reportbug@frosties.localnet> Reply-To: Christoph Hellwig , 661580@bugs.debian.org 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: Goswin von Brederlow , 661580@bugs.debian.org Cc: Debian Bug Tracking System , Carlos Maiolino Carlos, didn't you plan to look into this issue? Goswin, how do you determin that mkfs is still doing unaligned I/O when forcing the large sevtor size? Once we set the sector size XFS can't do I/O smaller than it. On Tue, Feb 28, 2012 at 08:49:14AM +0100, Goswin von Brederlow wrote: > Package: xfsprogs > Version: 3.1.7 > Severity: important > File: /sbin/mkfs.xfs > > Hi, > > since I recently bought a harddisk with 4K sector size I've been > checking for correct alignment and blocksizes in various things. One > of them being xfs. > > When I partition the disk in parted it shows correctly to have a > logical blocksize of 512 byte and physical blocksize of 4096 byte. > But mkfs.xfs does not detect that the physical blocksize is 4096 byte > and creates a filesystem with: > > meta-data=/dev/sde1 isize=256 agcount=32, agsize=22892696 blks > = sectsz=512 attr=2 > data = bsize=4096 blocks=732566272, imaxpct=5 > = sunit=0 swidth=0 blks > naming =version 2 bsize=4096 ascii-ci=0 > log =internal bsize=4096 blocks=357698, version=2 > = sectsz=512 sunit=0 blks, lazy-count=1 > realtime =none extsz=4096 blocks=0, rtextents=0 > > > This often results in access to the disk that is not aligned to the > blocksize with the resulting degradation in performance. > > Further, manually selecting the right sector size of 4096 still causes > lots of unaligned access while formating and while mounting the > filesystem. It does seem to fix the problem for actual use though. > > MfG > Goswin > > -- System Information: > Debian Release: wheezy/sid > APT prefers unstable > APT policy: (500, 'unstable') > Architecture: amd64 (x86_64) > > Kernel: Linux 3.1.0-1-amd64 (SMP w/4 CPU cores) > Locale: LANG=C, LC_CTYPE=de_DE (charmap=ISO-8859-1) > Shell: /bin/sh linked to /bin/dash > > Versions of packages xfsprogs depends on: > ii libblkid1 2.20.1-1 > ii libc6 2.13-21 > ii libreadline5 5.2-11 > ii libuuid1 2.19.1-5 > > xfsprogs recommends no packages. > > Versions of packages xfsprogs suggests: > pn acl 2.2.51-4 > pn attr 1:2.4.46-3 > pn quota > pn xfsdump > > -- no debconf information > > > _______________________________________________ > xfs mailing list > xfs@oss.sgi.com > http://oss.sgi.com/mailman/listinfo/xfs ---end quoted text--- _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs