From owner-freebsd-stable@freebsd.org Sun Aug 30 00:01:22 2015 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9C5259C54B3 for ; Sun, 30 Aug 2015 00:01:22 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from esa-annu.net.uoguelph.ca (esa-annu.mail.uoguelph.ca [131.104.91.36]) by mx1.freebsd.org (Postfix) with ESMTP id 55EA411EF for ; Sun, 30 Aug 2015 00:01:21 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) IronPort-PHdr: 9a23:LJRhNh3NynFY8LfasmDT+DRfVm0co7zxezQtwd8ZsegeL/ad9pjvdHbS+e9qxAeQG96LsLQa26GP4/6ocFdDyKjCmUhKSIZLWR4BhJdetC0bK+nBN3fGKuX3ZTcxBsVIWQwt1Xi6NU9IBJS2PAWK8TWM5DIfUi/yKRBybrysXNWC1ILph6vrq8ObSj4LrQT+SIs6FA+xowTVu5teqqpZAYF19CH0pGBVcf9d32JiKAHbtR/94sCt4MwrqHwI6LoJvvRNWqTifqk+UacQTHF/azh0t4XXskyJYxGG4HhUXmheuB1US0jB7QrmRda7+n/+t/FhwwGBMMTsRrAlHzKv8/E4ZgXvjXI9NjU6uETegc90gacT9Aikrhd8x4PRSJySO+dzervdO9gTEzkSFv1NXjBMV9vvJ7AECPAMaKMB99Hw X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2ApAgDZRuJV/61jaINehF6DHbpoAQmHc4FeFAEBAQEBAQEBgQmCHYIHAQEEI1YSAQgYAgINGQJbBIhBqGWUQAEKAQEBAR2BIoVOhHuEQBc0gnCBQwWVQY4+lTSDagImhBsigXuBBQEBAQ X-IronPort-AV: E=Sophos;i="5.17,432,1437451200"; d="scan'208";a="235477166" Received: from nipigon.cs.uoguelph.ca (HELO zcs1.mail.uoguelph.ca) ([131.104.99.173]) by esa-annu.net.uoguelph.ca with ESMTP; 29 Aug 2015 20:01:14 -0400 Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id E762915F565; Sat, 29 Aug 2015 20:01:14 -0400 (EDT) Received: from zcs1.mail.uoguelph.ca ([127.0.0.1]) by localhost (zcs1.mail.uoguelph.ca [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id B9T-_067g__3; Sat, 29 Aug 2015 20:01:14 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 9970E15F56D; Sat, 29 Aug 2015 20:01:14 -0400 (EDT) X-Virus-Scanned: amavisd-new at zcs1.mail.uoguelph.ca Received: from zcs1.mail.uoguelph.ca ([127.0.0.1]) by localhost (zcs1.mail.uoguelph.ca [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 5qSI3x4aolpj; Sat, 29 Aug 2015 20:01:14 -0400 (EDT) Received: from zcs1.mail.uoguelph.ca (zcs1.mail.uoguelph.ca [172.17.95.18]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 7276615F565; Sat, 29 Aug 2015 20:01:14 -0400 (EDT) Date: Sat, 29 Aug 2015 20:01:14 -0400 (EDT) From: Rick Macklem To: "Frank de Bot (lists)" Cc: FreeBSD stable Message-ID: <1590188107.35935314.1440892874456.JavaMail.zimbra@uoguelph.ca> Subject: Re: NFS Client changing it's source address? (FreeBSD 10.2) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [172.17.95.11] X-Mailer: Zimbra 8.0.9_GA_6191 (ZimbraWebClient - FF34 (Win)/8.0.9_GA_6191) Thread-Topic: NFS Client changing it's source address? (FreeBSD 10.2) Thread-Index: zK53mPrPOsM6oRGX94XB8OZhwt0rtg== X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 30 Aug 2015 00:01:22 -0000 I wrote: > - Reconfigure your NFS server so that it never drops idle TCP connections. > (FreeBSD never drops an NFS TCP connection until umount, but some others > like Solaris NFS servers drop idle connections.) Oops, I forgot that the kernel RPC (I wasn't the author) does drop idle TCP connection(s) from client(s) after 6 minutes without RPC activity). I can't remember if the client side times out for NFS? The only time the idle timeout is disabled in the server is for NFSv4.1 with a backchannel on the TCP connection. Disabling it on the server is a 1line source change, but there isn't a sysctl for it (maybe there should be?). rick