Date: Tue, 29 Mar 2011 13:55:27 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Claus Guttesen <kometen@gmail.com> Cc: Alexander Leidinger <Alexander@leidinger.net>, Rick Macklem <rmacklem@uoguelph.ca>, FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: zfs, nfs and zil Message-ID: <20110329205527.GA77676@icarus.home.lan> In-Reply-To: <BANLkTi=M9wRxV=weca4LKFb%2BrLzu4bh9iw@mail.gmail.com> References: <BANLkTinZvLDkmUNHmDGQpQFRr31s=hyHuQ@mail.gmail.com> <113777190.2282503.1301350571721.JavaMail.root@erie.cs.uoguelph.ca> <BANLkTin6t=RUo8UHRg47ETZWajc2CWTJZg@mail.gmail.com> <20110329155149.167768mu74in1ios@webmail.leidinger.net> <BANLkTi=M9wRxV=weca4LKFb%2BrLzu4bh9iw@mail.gmail.com>
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On Tue, Mar 29, 2011 at 09:37:34PM +0200, Claus Guttesen wrote: > >> All ip-activitiy, dns, ssh etc. on the interface (ip-address) that is > >> mounted. So whenever I test I log in to the server using the other > >> ip-address and whenever it stops responding to ping or my screen > >> session stops I reload the interfaces and the traffic resumes. > > > > Are the two NICs the same brand/driver/board? If not, could you try to > > switch the networks on them and test if the problem persists? It would also > > be nice if you could tell which driver/chip the NIC with the problem is. > > It's a supermicro server with dual igb-nics on the mainboard. I did > try other cables and other ports on the switch (hp procurve). I don't > have access to the server atm. but I'll get the chip-info in a day or > two. Both ip-addresses are on same subnet. > > Speed is autonegotiated to 1 GB full duplex on server and switch. No > errors detected using netstat or on switch. Something tells me (gut feeling) the virtualisation part is probably somehow responsible for the problem, quote: > I'm mounting the FreeBSD-server from a couple of vmware esxi 4.1 > servers using nfs, but when there is alot of i/o the server becomes > unresponsive, easily triggered by installing ie. ms-sql. The server > itself is up but is not reachable from the network. When I take the > nic down and up again connection to the network is reestablished > (ip-wise). Can you remove ESXi from the picture and see if the problem continues? If it does, we should probably pull Jack Vogel into the discussion, as Supermicro predominantly uses Intel-based NICs. He'll need output from "pciconf -lvcb" and "dmesg" to assist. But before pulling him in, please see if you can remove ESXi from the picture. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB |
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