From owner-freebsd-questions Thu Jun 4 00:46:12 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id AAA19799 for freebsd-questions-outgoing; Thu, 4 Jun 1998 00:46:12 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from huron.nvl.virginia.edu (adrian@huron.nvl.Virginia.EDU [128.143.244.43]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id AAA19634 for ; Thu, 4 Jun 1998 00:46:00 -0700 (PDT) (envelope-from adrian@nvl.virginia.edu) Received: from localhost (adrian@localhost) by huron.nvl.virginia.edu (8.8.6 (PHNE_14041)/8.8.6) with SMTP id DAA21809; Thu, 4 Jun 1998 03:45:54 -0400 (EDT) Date: Thu, 4 Jun 1998 03:45:53 -0400 (EDT) From: Adrian Filipi-Martin Reply-To: Adrian Filipi-Martin To: Doug White cc: Brett Paden , questions@FreeBSD.ORG Subject: Re: Partition at 109%?? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 3 Jun 1998, Doug White wrote: > On Wed, 3 Jun 1998, Brett Paden wrote: > > > Is this merely as safety precaution, or is this a weird bug I am > > witnessing? > > Safety precaution. The filesystem reserves 10% of the space for a buffer > by default. Root can override that limit and use it, but your filesystem > performance will suffer, and no one else will be able to write to the > filesystem. Well, the fact that root can write to the filesystem past the 100% mark could be considered a security feature. I think it is more technically correct to say that the 10% reserved disk space is a performance enhancement. It is used to allow the kernel to group blocks of data together to achieve more efficient I/O. If you format a disk with less reserved space or run it until it is 110% full, you will see significant degradation in filesystem performance. Adrian -- adrian@virginia.edu ---->>>>| If I were stranded on a desert island, and System Administrator --->>>| I could only have one OS for my computer, Neurosurgical Visualization Lab ->>| it would be FreeBSD. Think about it..... http://www.nvl.virginia.edu/ ->| http://www.freebsd.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message