From owner-freebsd-questions Thu May 31 21:20: 6 2001 Delivered-To: freebsd-questions@freebsd.org Received: from core.usrlib.org (CC2-861.charter-stl.com [24.217.115.99]) by hub.freebsd.org (Postfix) with ESMTP id 3D72137B422 for ; Thu, 31 May 2001 21:20:00 -0700 (PDT) (envelope-from ajh3@core.usrlib.org) Received: by core.usrlib.org (Postfix, from userid 1001) id A87EEA873; Thu, 31 May 2001 23:18:41 -0500 (CDT) Date: Thu, 31 May 2001 23:18:41 -0500 From: Andrew Hesford To: Kris Kennaway Cc: Andrew Hesford , Rick Hamell , Christoph Kukulies , questions@freebsd.org Subject: Re: 2GB filesize limit? Message-ID: <20010531231841.B46862@core.usrlib.org> References: <200105310943.f4V9hgX04825@gilberto.physik.rwth-aachen.de> <20010531114130.A45461@core.usrlib.org> <20010531120721.F96927@xor.obsecurity.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010531120721.F96927@xor.obsecurity.org>; from kris@obsecurity.org on Thu, May 31, 2001 at 12:07:21PM -0700 X-Loop: Andrew Hesford Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, May 31, 2001 at 12:07:21PM -0700, Kris Kennaway wrote: > On Thu, May 31, 2001 at 11:41:30AM -0500, Andrew Hesford wrote: > > On Wed, May 30, 2001 at 09:06:54AM -0700, Rick Hamell wrote: > > > > What is currently FreeBSD's max file size? > > > > > > Maximum filesystem size is 2 gigablocks, maximum file size is 1 > > gigablock. > Actually the max FS size is 2^31 sectors (usually 512 bytes), not > blocks. That comes out to 1 TB. This is the maximum *partition* size. From /sys/ufs/ffs/fs.h, we have in the definition of "struct fs" the following: int32_t fs_size /* number of blocks in fs */ Hence a filesystem can have 2^31 blocks, or 2 gigablocks. For you, this means a whopping 32T filesystem (since you do use the 16k block size. > > With the standard 8K block size, this means you can have a > > filesystem 16TB big, and a file 8TB big. > > Ah yes, this explains my other message (I'm using 16k block sizes). > > Kris It turns out I read (and responded to) your other message before I read this one, but yes, it does. Mere commoners like me are restricted to 8T files with truncate. -- Andrew Hesford ajh3@usrlib.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message