Date: Sun, 20 Dec 2009 13:57:59 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: Bob Friesenhahn <bfriesen@simple.dallas.tx.us> Cc: freebsd-fs@freebsd.org Subject: Re: am-utils/NFS mount lockups in 8.0 Message-ID: <Pine.GSO.4.63.0912201355080.377@muncher.cs.uoguelph.ca> In-Reply-To: <alpine.GSO.2.01.0912191217470.1586@freddy.simplesystems.org> References: <alpine.GSO.2.01.0912191217470.1586@freddy.simplesystems.org>
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On Sat, 19 Dec 2009, Bob Friesenhahn wrote: > After upgrading my FreeBSD system from FreeBSD 7.2 to 8.0, the am-utils > automounter is experiencing difficulty with managing the NFS client mounts to > my Solaris 10U8 system. There have never been any difficulties before. This > is when using the NFSv3/TCP in the default kernel and not the new NFSv4 > implementation. If it matters, this is for NFS exports from a ZFS pool, with > an exported filesystem per user. > > The problem I see is that the initial mount is instantaneous and works great. > After the mount times out, the re-mount produces several "NFS timeout" > messages to the widow where the accessing program is running. Sometimes this > remount succeeds, but if it fails, then the program is left locked up forever > waiting for the NFS mount. Meanwhile connectivity between the FreeBSD system > and the Solaris system is fine, as illustrated by excellent connectivity with > SSH and no lost packets via 'ping'. > You could try the patch at: http://people.freebsd.org/~rmacklem/patches/freebsd8-clntvc.patch (Fixes an issue w.r.t. client side TCP reconnects and didn't quite make it into 8.0.) I am trying to keep a list of FreeBSD8.0 NFS fixes at: http://people.freebsd.org/~rmacklem Good luck with it, rick
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