Date: Thu, 18 Oct 2012 13:52:36 +0200 From: Kristof Provost <kristof@sigsegv.be> To: Alexey Tyurikov <alexey.tyurikov@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS over NFS issue with linux clients Message-ID: <20121018115236.GT9028@thebe.jupiter.sigsegv.be> In-Reply-To: <CANJVYoJwobEk%2BPMaLDco8krsRsa-JsfkxqDUkVf8v%2B4MED=XqQ@mail.gmail.com> References: <CANJVYoLWWPDJ0r=RnWiSnUTKnY3AD5K-LL6QkWQecmuqjVLw0Q@mail.gmail.com> <20121018093517.GS9028@thebe.jupiter.sigsegv.be> <CANJVYoJwobEk%2BPMaLDco8krsRsa-JsfkxqDUkVf8v%2B4MED=XqQ@mail.gmail.com>
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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
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