From owner-freebsd-current@FreeBSD.ORG Tue Jul 19 20:38:06 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1CFA516A41F for ; Tue, 19 Jul 2005 20:38:06 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from mh2.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8712E43D45 for ; Tue, 19 Jul 2005 20:38:05 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh2.centtech.com (8.13.1/8.13.1) with ESMTP id j6JKc4pA003020 for ; Tue, 19 Jul 2005 15:38:04 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <42DD64AB.3000605@centtech.com> Date: Tue, 19 Jul 2005 15:38:03 -0500 From: Eric Anderson User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.8) Gecko/20050603 X-Accept-Language: en-us, en MIME-Version: 1.0 To: FreeBSD Current Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: mksnap_ffs takes 4-5 minutes? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Jul 2005 20:38:06 -0000 Last week, I tried making a snapshot of one of my NFS servers' partitions. I've done this one other machines before, with smaller barely used partitions, and it has always been relatively snappy. This time, when I ran mksnap_ffs, the command took nearly 5 minutes, in which time all NFS traffic was suspended, as well as all disk access on the machine. After reading in the FreeBSD Implementation book (McKusick), it claims it should be very very fast. Anyone know why it should take so long to do this snapshot? Is this expected normal behaviour, or should I expect faster snapshots? Here's some info on the filesystem: Filesystem 1K-blocks Used Avail Capacity iused ifree %iused Mounted on /dev/da1s1d 406234604 91799154 281936682 25% 1300303 51197103 2% /scr03 /dev/da1s1d on /scr03 (ufs, NFS exported, local, soft-updates) Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology A lost ounce of gold may be found, a lost moment of time never. ------------------------------------------------------------------------