From owner-freebsd-questions Sat Apr 14 8:25:31 2001 Delivered-To: freebsd-questions@freebsd.org Received: from chmod.ath.cx (CC2-861.charter-stl.com [24.217.115.99]) by hub.freebsd.org (Postfix) with ESMTP id E50A037B505 for ; Sat, 14 Apr 2001 08:25:29 -0700 (PDT) (envelope-from ajh3@chmod.ath.cx) Received: by chmod.ath.cx (Postfix, from userid 1001) id E2A2CA8D1; Sat, 14 Apr 2001 10:24:35 -0500 (CDT) Date: Sat, 14 Apr 2001 10:24:35 -0500 From: Andrew Hesford To: Gunnar Isaksson Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD filesystem limitations Message-ID: <20010414102435.A91157@cec.wustl.edu> References: <3AD80959.91CBE6C5@telia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3AD80959.91CBE6C5@telia.com>; from sm5iuf@telia.com on Sat, Apr 14, 2001 at 10:24:57AM +0200 X-Loop: Andrew Hesford Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, Apr 14, 2001 at 10:24:57AM +0200, Gunnar Isaksson wrote: > I have no memory of any filesize limitation on > FreeBSD and would like to know if there is anything > similar to the Linux 2GB limit? Okay, after posting my last response, I found this interesting tidbit of information from http://www3.au.freebsd.org/FAQ/install.html: The maximum theoretical filesystem size limitation is 2 gigablocks. Thus, with the default block size of 8K, this is 16TB. With a 4K block size (this is the smallest possible, I think) this works out to 8TB. In practice, there is a soft limit (I'm not sure what this means) of 1TB, although modifications can yield 4TB filesystems, which do exist. The maximum file size on an FFS filesystem is approximately 1 gigablocks, or half the maximum filesystem size. With the smallest possible block size (4K), this means you have 4TB files, and with a default 8K block size, you can get 8TB files. I wonder how long it takes to dd one of those from /dev/urandom. -- Andrew Hesford ajh3@chmod.ath.cx To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message