Date: Wed, 26 Feb 2014 11:32:09 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-net@freebsd.org Cc: Johan Kooijman <mail@johankooijman.com> Subject: Re: Network loss Message-ID: <201402261132.09203.jhb@freebsd.org> In-Reply-To: <CAHvs-HUk_i9du7L2D_MyfR6m5G7nOZfCNT0vyiEtwV8sNZfBQg@mail.gmail.com> References: <CAHvs-HUk_i9du7L2D_MyfR6m5G7nOZfCNT0vyiEtwV8sNZfBQg@mail.gmail.com>
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On Tuesday, February 25, 2014 2:19:01 am Johan Kooijman wrote: > Hi all, > > I have a weird situation here where I can't get my head around. > > One FreeBSD 9.2-STABLE ZFS/NFS box, multiple Linux clients. Once in a while > the Linux clients loose their NFS connection: > > Feb 25 06:24:09 hv3 kernel: nfs: server 10.0.24.1 not responding, timed out > > Not all boxes, just one out of the cluster. The weird part is that when I > try to ping a Linux client from the FreeBSD box, I have between 10 and 30% > packetloss - all day long, no specific timeframe. If I ping the Linux > clients - no loss. If I ping back from the Linux clients to FBSD box - no > loss. > > The errors I get when pinging a Linux client is this one: > ping: sendto: File too large EFBIG is sometimes used for drivers when a packet takes too many scatter/gather entries. Since you mentioned NFS, one thing you can try is to disable TSO on the intertface you are using for NFS to see if that "fixes" it. -- John Baldwin
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