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 n6T1V2iM214632 for ; Tue, 28 Jul 2009 20:31:06 -0500 Received: from Ishtar.sc.tlinx.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id F14E5141767D for ; Tue, 28 Jul 2009 18:31:43 -0700 (PDT) Received: from Ishtar.sc.tlinx.org (ishtar.tlinx.org [64.81.245.74]) by cuda.sgi.com with ESMTP id G1m9gfdl55xeu5pF for ; Tue, 28 Jul 2009 18:31:43 -0700 (PDT) Message-ID: <4A6FA67D.7080800@tlinx.org> Date: Tue, 28 Jul 2009 18:31:41 -0700 From: "Linda A. Walsh" MIME-Version: 1.0 Subject: Re: does XFS support block sizes other than 512 bytes? References: <4A6119B5.6000706@tlinx.org> <4A671E44.4040305@xfs.org> In-Reply-To: <4A671E44.4040305@xfs.org> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Russell Cattelan , xfs-oss Russell Cattelan wrote: >> But at least 1K might be a reasonable tradeoff? Been quite a while since >> I tried it and don't even know if the SAS drives allow it (if they do, >> I wonder if the newer SATA drives do?) > Yes > XFS can support any power of 2 sector size up to the page size of your > system. > And it is recommend that on things like raid5 devices that the sector > size be > set to the same size as the filesystem block size. > >> thanks more... :-) >> -linda --- Just tried a 146GB-15K Seagate Cheetah SAS. It didn't like anything other than 512bytes. Any larger size ended up with a 528 byte sector size which really miffed the linux kernel so bad, it wouldn't expose it as a device in /dev. If you don't know mknod and the correct dev num, it would make for a very interesting time formatting it back down. ;-) Do you know what brands might allow resizing? You say SATA might allow...just a WAG...but maybe a Seagate SATA might not? ;^) Also, I wonder what might happen with a HW RAID card -- if it would deal with 4K block sizes. It deals with up to 1MB stripe sizes...so you'd think it'd handle 4K block sizes...??? Thanks for the fun times so far...;^) _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs