From owner-freebsd-fs@freebsd.org Mon Mar 14 02:21:01 2016 Return-Path: Delivered-To: freebsd-fs@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 27EC3AD0FB7 for ; Mon, 14 Mar 2016 02:21:01 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from esa-jnhn.mail.uoguelph.ca (esa-jnhn.mail.uoguelph.ca [131.104.91.44]) by mx1.freebsd.org (Postfix) with ESMTP id DEA611A7F for ; Mon, 14 Mar 2016 02:21:00 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) IronPort-PHdr: 9a23:Kp5SfRZt9ySnmLX8nXbAZWX/LSx+4OfEezUN459isYplN5qZpcS/bnLW6fgltlLVR4KTs6sC0LqJ9fG9EjFQqb+681k8M7V0HycfjssXmwFySOWkMmbcaMDQUiohAc5ZX0Vk9XzoeWJcGcL5ekGA6ibqtW1aJBzzOEJPK/jvHcaK1oLsh7/0qsCYPlUArQH+SI0xBS3+lR/WuMgSjNkqAYcK4TyNnEF1ff9Lz3hjP1OZkkW0zM6x+Jl+73YY4Kp5pIZoGJ/3dKUgTLFeEC9ucyVsvJWq5lH/Sl6h/HYReF462jRJBwXe/QrmU5Lq+n/0rOdw0jKWeMPtZb4uVDmo9KstTwXn3nQpLTk8pVvWgc84qatQoxasolQr2Yvda4KROf9WY6TSYN4eXWoHVc8HBH8JOZ+1c4ZaV7lJBu1ftYSo4gJW9RY= X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2DNAQCrH+ZW/61jaINdhQO6KQENgW2GDYFgFAEBAQEBAQEBYyeCLYIbI1YSASICDRkCWwSIN6tPjm0BAQEBBgEBAQEcfIUcgXuGUREBBoMYgToFl0uPZYRJiFeOewIeAQFChAAgiVYJFwQZfgEBAQ X-IronPort-AV: E=Sophos;i="5.24,334,1454994000"; d="scan'208";a="270662937" Received: from nipigon.cs.uoguelph.ca (HELO zcs1.mail.uoguelph.ca) ([131.104.99.173]) by esa-jnhn.mail.uoguelph.ca with ESMTP; 13 Mar 2016 22:20:48 -0400 Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 7175715F56E; Sun, 13 Mar 2016 22:20:48 -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 SyuL9a2eVirU; Sun, 13 Mar 2016 22:20:48 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 04DB715F577; Sun, 13 Mar 2016 22:20:48 -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 G9eRGXNId2bp; Sun, 13 Mar 2016 22:20:47 -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 AFA9415F56E; Sun, 13 Mar 2016 22:20:47 -0400 (EDT) Date: Sun, 13 Mar 2016 22:20:47 -0400 (EDT) From: Rick Macklem To: FreeBSD Filesystems Cc: Julian Elischer Message-ID: <826673226.15831075.1457922047675.JavaMail.zimbra@uoguelph.ca> Subject: make mountd's -S option the default 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 - FF44 (Win)/8.0.9_GA_6191) Thread-Topic: make mountd's -S option the default Thread-Index: RfXREFDA5eTY9Xb02rgban9WF+AP4A== X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Mar 2016 02:21:01 -0000 Julian Elischer has volunteered to commit the patches that make the -S option the default for mountd. Without this option, any reload of /etc/exports (which happens whenever any file system is mounted on the server) can result in error replies to NFS clients, due to the file system being temporarily not exported. The only downside I can think of to using this option is a delay observed by NFS clients when large /etc/exports files are reloaded. (Since without the delay they can get error replies, the delay seems preferable. There are several PR#s related to these error replies: 9619, 131342, 206855 (and probably some others) If anyone has a problem with this change in default behaviour, please email. rick