From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756518AbXD2QZ0 (ORCPT ); Sun, 29 Apr 2007 12:25:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756521AbXD2QZ0 (ORCPT ); Sun, 29 Apr 2007 12:25:26 -0400 Received: from lucidpixels.com ([75.144.35.66]:47390 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756518AbXD2QZX (ORCPT ); Sun, 29 Apr 2007 12:25:23 -0400 Date: Sun, 29 Apr 2007 12:25:19 -0400 (EDT) From: Justin Piszcz X-X-Sender: jpiszcz@p34.internal.lan To: xfs@oss.sgi.com cc: linux-kernel@vger.kernel.org Subject: Re: mkfs.xfs cannot make sector size 64 KiB? In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Adding LKML to cc list. On Sun, 29 Apr 2007, Justin Piszcz wrote: >> From the manpage: > > -b Block size options. > > This option specifies the fundamental block size of the > filesys- > tem. The valid suboptions are: log=value and size=value; > only > one can be supplied. The block size is specified either as > a > base two logarithm value with log=, or in bytes with size=. > The > default value is 4096 bytes (4 KiB), the minimum is 512, and > the > maximum is 65536 (64 KiB). XFS on Linux currently only > supports > pagesize or smaller blocks. > > The maximum size is 64 KiB, yet it seems only up to 32 KiB is valid? > > I am running x86_64. > > $ uname -m > x86_64 > > > p34:~# mkfs.xfs -b size=512 /dev/md3 > mkfs.xfs: /dev/md3 appears to contain an existing filesystem (xfs). > mkfs.xfs: Use the -f option to force overwrite. > p34:~# mkfs.xfs -b size=4096 /dev/md3 > mkfs.xfs: /dev/md3 appears to contain an existing filesystem (xfs). > mkfs.xfs: Use the -f option to force overwrite. > p34:~# mkfs.xfs -b size=8192 /dev/md3 > mkfs.xfs: /dev/md3 appears to contain an existing filesystem (xfs). > mkfs.xfs: Use the -f option to force overwrite. > p34:~# mkfs.xfs -b size=16384 /dev/md3 > mkfs.xfs: /dev/md3 appears to contain an existing filesystem (xfs). > mkfs.xfs: Use the -f option to force overwrite. > p34:~# mkfs.xfs -b size=32768 /dev/md3 > mkfs.xfs: /dev/md3 appears to contain an existing filesystem (xfs). > mkfs.xfs: Use the -f option to force overwrite. > p34:~# mkfs.xfs -b size=65536 /dev/md3 > illegal sector size 65536 > Usage: mkfs.xfs > /* blocksize */ [-b log=n|size=num] > /* data subvol */ [-d agcount=n,agsize=n,file,name=xxx,size=num, > (sunit=value,swidth=value|su=num,sw=num), > sectlog=n|sectsize=num,unwritten=0|1] > /* inode size */ [-i log=n|perblock=n|size=num,maxpct=n,attr=0|1|2] > /* log subvol */ [-l agnum=n,internal,size=num,logdev=xxx,version=n > sunit=value|su=num,sectlog=n|sectsize=num] > /* label */ [-L label (maximum 12 characters)] > /* naming */ [-n log=n|size=num,version=n] > /* prototype file */ [-p fname] > /* quiet */ [-q] > /* realtime subvol */ [-r extsize=num,size=num,rtdev=xxx] > /* sectorsize */ [-s log=n|size=num] > /* version */ [-V] > devicename > is required unless -d name=xxx is given. > is xxx (bytes), xxxs (sectors), xxxb (fs blocks), xxxk (xxx KiB), > xxxm (xxx MiB), xxxg (xxx GiB), xxxt (xxx TiB) or xxxp (xxx PiB). > is xxx (512 byte blocks). > p34:~# > > Unless, the page size is not <= 64 for x86_64? > > Justin. > >