From owner-freebsd-questions Sat Dec 7 4:29:38 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 046EE37B401 for ; Sat, 7 Dec 2002 04:29:37 -0800 (PST) Received: from maild.telia.com (maild.telia.com [194.22.190.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5CE8F43EA9 for ; Sat, 7 Dec 2002 04:29:35 -0800 (PST) (envelope-from erikt@midgard.homeip.net) Received: from d1o913.telia.com (d1o913.telia.com [195.252.44.241]) by maild.telia.com (8.12.5/8.12.5) with ESMTP id gB7CTX1R006813 for ; Sat, 7 Dec 2002 13:29:34 +0100 (CET) X-Original-Recipient: Received: from falcon.midgard.homeip.net (h76n3fls20o913.telia.com [213.67.148.76]) by d1o913.telia.com (8.8.8/8.8.8) with SMTP id NAA12389 for ; Sat, 7 Dec 2002 13:29:33 +0100 (CET) Received: (qmail 7191 invoked by uid 1001); 7 Dec 2002 12:29:31 -0000 Date: Sat, 7 Dec 2002 13:29:31 +0100 From: Erik Trulsson To: Josh Brooks Cc: freebsd-questions@freebsd.org Subject: Re: NFS - what troubles to expect ? Message-ID: <20021207122931.GA7158@falcon.midgard.homeip.net> Mail-Followup-To: Josh Brooks , freebsd-questions@freebsd.org References: <20021206215223.R77087-100000@mail.econolodgetulsa.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20021206215223.R77087-100000@mail.econolodgetulsa.com> User-Agent: Mutt/1.5.1i 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 Fri, Dec 06, 2002 at 09:54:35PM -0800, Josh Brooks wrote: >=20 > Helol, >=20 > I have used NFS on sun/solaris systems for many years, and the one big > headache that comes to mind is how, if the server is down, and the client > has an automount on boot, the client will hang forever (basically forever) > trying to mount from the down NFS server. >=20 > Does this behavior exist in the FreeBSD world ? What other related > behavior can I expect if I have about 10 servers that are all _clients_ > for an 11th NFS server, and that NFS server goes down ? Will the > performance on the clients go down when the NFS server disappears ? >=20 > Will they too, like solaris systems, hang forever on boot when the nfs > server they automount is not present ? The default behaviour is the same as on Solaris, but it can be modified. From the mount_nfs(8) manpage: By default, mount_nfs keeps retrying until the mount succeeds. This behaviour is intended for filesystems listed in fstab(5) that are criti= =AD cal to the boot process. For non-critical filesystems, the -b and -R flags provide mechanisms to prevent the boot process from hanging if the server is unavailable. If the server becomes unresponsive while an NFS filesystem is mounted, any new or outstanding file operations on that filesystem will hang unin= =AD terruptibly until the server comes back. To modify this default behaviour, see the -i and -s flags. --=20 Erik Trulsson ertr1013@student.uu.se To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message