Date: Thu, 18 Oct 2012 11:35:18 +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: <20121018093517.GS9028@thebe.jupiter.sigsegv.be> In-Reply-To: <CANJVYoLWWPDJ0r=RnWiSnUTKnY3AD5K-LL6QkWQecmuqjVLw0Q@mail.gmail.com> References: <CANJVYoLWWPDJ0r=RnWiSnUTKnY3AD5K-LL6QkWQecmuqjVLw0Q@mail.gmail.com>
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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
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