Date: Wed, 6 Jan 2010 15:19:49 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: alan bryan <alan.bryan@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: Zombie NFS writing from FreeBSD clients to FreeBSD 8.0 server with ZFS Message-ID: <Pine.GSO.4.63.1001061514590.23965@muncher.cs.uoguelph.ca> In-Reply-To: <700718.76026.qm@web50501.mail.re2.yahoo.com> References: <700718.76026.qm@web50501.mail.re2.yahoo.com>
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On Wed, 6 Jan 2010, alan bryan wrote: > I have a AMD64 FreeBSD 8.0 server with ZFS filesystem being shared via NFS. These are being accessed by the clients. The clients are a mix of FreeBSD 6.2 32bit and FreeBSD 7.0 64bit. I have seen similar behavior from both versions of FreeBSD as clients. > [stuff related to lotsa writes being done snipped] > > Any ideas on what to try, where to look for more insight, etc...?? > It might be worth taking a look at the traffic. Wireshark (or a tcpdump packet capture read into wireshark) does a good job of interpreting NFS traffic. "tcpdump -s 0 -w <file> host <client>" run for a short period of time when <client> has the problem and then looking at that in wireshark would at least allow you to see what the writes look like? - Are they the same write being retried over and over? - Is the server replying to them with an error? The above might give some insight into what's happening, rick
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