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 n2CEPi2Z081189 for ; Thu, 12 Mar 2009 09:26:04 -0500 Received: from rgminet12.oracle.com (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 7EB441C38F6D for ; Thu, 12 Mar 2009 07:25:21 -0700 (PDT) Received: from rgminet12.oracle.com (rcsinet12.oracle.com [148.87.113.124]) by cuda.sgi.com with ESMTP id q2eYeXAlhoPXjeD1 for ; Thu, 12 Mar 2009 07:25:21 -0700 (PDT) Subject: Re: LWN article: 4K disk sectors From: "Martin K. Petersen" References: <200903121258.51497@zmi.at> <49B909CC.7080402@sandeen.net> <200903121452.16419@zmi.at> Date: Thu, 12 Mar 2009 10:23:30 -0400 In-Reply-To: <200903121452.16419@zmi.at> (Michael Monnerie's message of "Thu\, 12 Mar 2009 14\:52\:16 +0100") Message-ID: MIME-Version: 1.0 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: Michael Monnerie Cc: xfs@oss.sgi.com >>>>> "Michael" == Michael Monnerie writes: Michael> I thought that it's a limitation of the Linux kernel in more Michael> parts than just the filesystem (like block cache), that sector Michael> sizes must be 512B. Nope. We've supported bigger sector sizes for years because of CD-ROMs, mainframe DASD, etc. Michael> If I had a 4K drive, would that be usable with XFS already? # cat /sys/block/sdc/queue/hw_sector_size 4096 # xfs_info /mnt meta-data=/dev/sdc1 isize=256 agcount=16, agsize=5113686 blks = sectsz=4096 attr=0 data = bsize=4096 blocks=81818976, imaxpct=25 = sunit=0 swidth=0 blks, unwritten=1 naming =version 2 bsize=4096 log =internal bsize=4096 blocks=32768, version=2 = sectsz=4096 sunit=1 blks, lazy-count=0 realtime =none extsz=4096 blocks=0, rtextents=0 -- Martin K. Petersen Oracle Linux Engineering _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs