Date: Mon, 8 Sep 2008 18:41:54 +0200 (CEST) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-stable@FreeBSD.ORG, gphoto6@gmail.com Subject: Re: How to disable NFS fnctl in /etc/fstab? Message-ID: <200809081641.m88GfsXb082210@lurza.secnetix.de> In-Reply-To: <1f51039c0809040911oe4409b5ibe3f4dcf53528407@mail.gmail.com>
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Tim Chen wrote: > For some reason we want to disable fnctl lock for NFS > mounted partition. We can achieve this by the following > command: mount_nfs -T -L server:/home /mnt > However after several time of failure tests, we still > can not make it work in /etc/fstab. > > server:/home /mnt nfs rw,tcp 0 0 server:/home /mnt nfs rw,tcp,-L 0 0 > By the way, since the machine is running as a mail server which > install postfix,courier-imap, will it happen any kind of data > corruption due to NFS fnctl lock disabled? In general, all programs that access mail files must use locking for concurrent access. Without proper locking you'll get data corruption. I strongly advise against running mail software on NFS mounts without locking (i.e. with the -L option). Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "If you think C++ is not overly complicated, just what is a protected abstract virtual base pure virtual private destructor, and when was the last time you needed one?" -- Tom Cargil, C++ Journal
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