From owner-freebsd-current Fri Sep 17 16:14:40 1999 Delivered-To: freebsd-current@freebsd.org Received: from proxy2.ba.best.com (proxy2.ba.best.com [206.184.139.14]) by hub.freebsd.org (Postfix) with ESMTP id AC2F415916 for ; Fri, 17 Sep 1999 16:14:38 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: from apollo.backplane.com ([209.157.86.2]) by proxy2.ba.best.com (8.9.3/8.9.2/best.out) with ESMTP id QAA04254 for ; Fri, 17 Sep 1999 16:12:34 -0700 (PDT) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id JAA53554; Fri, 17 Sep 1999 09:11:03 -0700 (PDT) (envelope-from dillon) Date: Fri, 17 Sep 1999 09:11:03 -0700 (PDT) From: Matthew Dillon Message-Id: <199909171611.JAA53554@apollo.backplane.com> To: Julian Elischer Cc: Dan Nelson , Brad Knowles , Thomas Dean , freebsd-current@FreeBSD.ORG Subject: Re: More benchmarking stuff... References: Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :> files sitting in unflushed disk caches and you reboot, those files are :> lost. Softupdated just guarantees that the disk will be in a stable :> state after a crash, not that all data written before the crash will be :> available. :> : :Soft updates guarantees that when an fsync() is done, it's on disk... Actually.... it doesn't. I wish it did. All softupdates does is guarentee that the on-disk image is stable, it doesn't guarentee that the on-disk image has been synchronized to what the program thinks it has written to the file. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message