Date: Fri, 8 Oct 2010 13:00:30 +0200 From: Marco van Tol <marco@tols.org> To: gil@vidals.net Cc: freebsd-fs@freebsd.org Subject: Re: moving away from freebsd and zfs Message-ID: <20101008110030.GD94234@tolstoy.tols.org> In-Reply-To: <AANLkTik6K2sZy0Wosj1cadz=mbAktzTZFzTEenopF-9C@mail.gmail.com> References: <AANLkTik6K2sZy0Wosj1cadz=mbAktzTZFzTEenopF-9C@mail.gmail.com>
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On Fri, Oct 08, 2010 at 03:00:28AM -0700, Gil Vidals wrote: > I'm hoping that somebody can help me as I've spent about a month studying > FreeBSD + ZFS to use as a NAS for my VMware ESX environment; however, it > looks like my hopes were completely dashed yesterday as my ZFS server based > on 64-bit i7 CPU with 8 GB of RAM and SSD slogs came crumbling down when I > added a second NFS mount point. > > After several hours of research on the crash, it seems that FreeBSD 8.1 > won't launch more than one nfsd, no matter what is configured in rc.conf. > (FreeBSD 7.x does launch multiple NFS daemons). So when I added my second > mount point, the CPU load went very high for the RPC services and the second > NFS mount point disconnected, brining down the running VMs. Check out the '-n' flag to nfsd, which is defaulted to 4 in /etc/defaults/rc.conf through nfs_server_flags. > PROBLEM: only one nfsd > zambia# ps waux | grep nfs > root 1213 0.0 0.0 5804 1508 ?? Is 5:23PM 0:00.02 nfsd: master > (nfsd) > root 1214 0.0 0.0 5804 1588 ?? S 5:23PM 8:06.88 nfsd: server > (nfsd) Try this one with 'ps Hjax | grep nfs'. The capital H is used to display threads next to processes. Add w flags to ps if necessary. > The solution described here, > http://forums.freebsd.org/showthread.php?t=11873 points to compiling a > kernel with these options: > > options NFSD > options DEVICE_POLLING > options HZ=1000 > > The NFSD seems to be what solved the problem for the forum poster, but NFSD > option means that NFSv4 (experimental) is what is running and that isn't > supported by the VMware NFS client, so I can't use it. I don't know what to > do and I would be grateful for any suggestions. I haven't got much experience with nfs4, sorry. :) Marco -- Most general statements are false, including this one. - Alexander Dumas
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