zfs, nfs and zil
freebsd at jdc.parodius.com
Tue Mar 29 20:55:29 UTC 2011
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
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
| Jeremy Chadwick jdc at 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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