Received-SPF: pass (google.com: best guess record for domain of linux-nfs-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
IronPort-SDR: 4a4ONMkdgp0TUJfwi45iMqfxU5HIFSFcsSuR8FdBF8Qizsw6hA+9eOYk7V1y9Lg6MAEdQ6jiZo
 DC3MnS+J9ybg==
IronPort-PHdr: =?us-ascii?q?9a23=3ACUmBgx/7zBM/Vf9uRHKM819IXTAuvvDOBiVQ1K?=
 =?us-ascii?q?B41+gcTK2v8tzYMVDF4r011RmVBN6du6IP0LGempujcFRI2YyGvnEGfc4EfD?=
 =?us-ascii?q?4+ouJSoTYdBtWYA1bwNv/gYn9yNs1DUFh44yPzahANS47xaFLIv3K98yMZFA?=
 =?us-ascii?q?nhOgppPOT1HZPZg9iq2+yo9JDffgtFiCC+bL5xIxm7owvcvdQKjIV/Lao81g?=
 =?us-ascii?q?HHqWZSdeRMwmNoK1OTnxLi6cq14ZVu7Sdete8/+sBZSan1cLg2QrJeDDQ9Lm?=
 =?us-ascii?q?A6/9brugXZTQuO/XQTTGMbmQdVDgff7RH6WpDxsjbmtud4xSKXM9H6QawyVD?=
 =?us-ascii?q?+/6apgVR3mhzodNzMh7m/ZitF+gqFVrh2uuxNxzJXZYJ2XOfdkYq/RYc8WSG?=
 =?us-ascii?q?hHU81MVyJBGIS8b44XAucfPeZXtY/9qEYKrRSgHwmnGeTixSVViX/z3K061f?=
 =?us-ascii?q?8sEQ7Y0wwmGNIOtWrboM/vO6cIUOC0za7IzTPZYP9Mxzjy9ZXIfwknrPqRXr?=
 =?us-ascii?q?xwadLcxVQxGw7GlFmctIjoMjKP2ugQvGWW6/BsWfyghmMmrQx6vyKhyd02io?=
 =?us-ascii?q?bTg4IY0lXE9SJkz4krPdC4U0t7YcK8EJtXqiGaK5N6QsM8TGFsvyY30rkJtY?=
 =?us-ascii?q?OlcCUJ0pgr2hrSZv2df4SV7R/uUPydLSl3iX9kfr2znxey8U6+xe3gTsS4zU?=
 =?us-ascii?q?hGoylfntXRsn0A1gbf5tWIR/Z55EutxzmC2gHL5uFBO080lK7bK5A7wr43k5?=
 =?us-ascii?q?oeqV7METLzmEX3iq+bbUok9fau6+TgZ7XpuIWQOJVuigH/M6Uuncq/Dv4iPg?=
 =?us-ascii?q?cQQmeb5Pyw1Kf/8k3hXLVKkvo2n7HdsJDbI8Qbu6G4DxZT0oYt8BayFCmm0N?=
 =?us-ascii?q?sGknkdNl5FewyIj5LvO17QJPD0F/C/g06jkGQj+/eTOrznH4WIKHbYuKnucK?=
 =?us-ascii?q?w76ENGzgc3i9dF6MF6ELYEddnzU0n9sNHCRkswPwm1xc7oBdN6045YUHiOEK?=
 =?us-ascii?q?ifOeXfvULetbFnGPWFeIJA4GW1EPMi/fO71XI=3D?=
To:     linux-nfs@vger.kernel.org
From:   Chandler <admin@genome.arizona.edu>
Subject: NFS hangs on one interface
Message-ID: <3447df77-1b2f-6d36-0516-3ae7267ab509@genome.arizona.edu>
Date:   Tue, 22 Oct 2019 17:34:51 -0700
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-nfs-owner@vger.kernel.org
Precedence: bulk

Hi all, I'm sure you get this alot, but I couldn't figure out any solution.  We have a client/server pair with both 1Gb and 10Gb network interfaces.  I can mount the share on the client on the 1Gb interface just fine and interact with it normally.  If I unmount and try to mount the share on the 10Gb interface, it will mount but everything after that hangs (like ls or df).  The exports entry is the same on the server, i.e.:

#1Gb interface
/data   10.10.10.0/24(rw,no_root_squash,async)
#10Gb interface
/data   128.196.X.X/28(rw,no_root_squash,async)

I turned off iptables for troubleshooting and checked with the NOC here.  Using NFSv4 by default and CentOS 6.10 2.6.32 kernel.  I had some strange results if i try vers=3 or vers=2, then i can "ls /data" but if I try to "ls /data/subdir" then it hangs again.  Now it doesn't even mount if i try with vers=3 or vers=2