Date: Thu, 15 May 2014 17:50:03 +0100 From: Karl Pielorz <kpielorz_lst@tdx.co.uk> To: "Janky Jay, III" <jankyj@unfs.us>, freebsd-infiniband@freebsd.org Subject: Re: FBSD to FBSD NFS Mounts over IB. Message-ID: <55BC554716A7EA5C54F5DD02@study64.tdx.co.uk> In-Reply-To: <5374D431.5020501@unfs.us> References: <5374D431.5020501@unfs.us>
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--On 15 May 2014 08:50:25 -0600 "Janky Jay, III" <jankyj@unfs.us> wrote: > I have set up one of the FBSD systems to run OpenSM and also be an NFS > server which all the systems seem to be able to mount over the IB devices > without any issue at all. Small reads and writes to and from the NFS > server to all the other nodes also seems to work without any issue. > However, if I try to dump large amounts of data using "dd" (in order to > test speeds and stability), the FBSD NFS client craps out immediately. I > just get the following message(s) over and over: > > newnfs server 10.11.1.1:/data: not responding > newnfs server 10.11.1.1:/data: not responding Can both sides 'ping' each other when this happens? The reason I ask is I've hit a similar issue setting up ZFS over iSCSI on IPOIB (I'm not running connected mode). At my end it looks like an ARP expires or something so the sides 'lose site' of each other. If 'A' can't see 'B' - a ping from 'B' to 'A' usually restores the connection. Maybe make sure they can both still see each other outside of nfs - I can temporarily 'fix' the issue here by leaving both sides pinging each other - I've not really had a chance to look at it much recently... -Karl
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