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Date: Thu, 18 Oct 2012 13:52:36 +0200
From: Kristof Provost <kristof@sigsegv.be>
To: Alexey Tyurikov <alexey.tyurikov@gmail.com>
Subject: Re: ZFS over NFS issue with linux clients
Message-ID: <20121018115236.GT9028@thebe.jupiter.sigsegv.be>
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I track stable/9 in 'production', where production is on my home
gateway/file/mail server.

Regards,
Kristof

On 2012-10-18 13:31:10 (+0200), Alexey Tyurikov <alexey.tyurikov@gmail.com> wrote:
> Yes, I can confirm, the issue doesn't exist on FreeBSD 9.1. Affected
> releases: 8.3, 9.0
> 
> @Kristof: thank you for the answer! do you use 9.1 in production?
> 
> Best regards
> Alexey
> 
> 2012/10/18 Kristof Provost <kristof@sigsegv.be>
> 
> > On 2012-10-18 10:50:25 (+0200), Alexey Tyurikov <alexey.tyurikov@gmail.com>
> > wrote:
> > > I'm looking for people using FreeBSD 9.0 amd64 ZFS over NFS (v3 and v4)
> > > with Linux clients. My clients (last CentOS6 and Debian6) don't use cache
> > > for files lying on ZFS over NFS. Tested:
> > >
> > >  $ grep something /nfs_zfs/file-100MB # network activity, client read the
> > > file over NFS (slow)
> > >  $ grep something /nfs_zfs/file-100MB # network activity, client read the
> > > file over NFS once again (slow)
> > >
> > I'm unable to reproduce this behaviour with a Debian 6.0 client (ARM,
> > because my openrd is the only client I can get to at the moment). That's
> > a 2.6.32-5-kirkwood kernel.
> >
> > The server is FreeBSD 9.1-PRERELEASE #91 r241441 (amd64). I can't
> > easily compare to UFS, because the server is ZFS only.
> >
> > I see network activity on the first read, but only very little (a single
> > getattr + reply in fact) on the second read.
> >
> > Regards,
> > Kristof
> >
> >
> 
> 
> -- 
> Alexey Tyurikov