Date: Fri, 11 May 2012 11:51:53 -0400 From: Gary Palmer <gpalmer@freebsd.org> To: Karl Oulmi <karl.oulmi@ibl.fr> Cc: freebsd-fs@freebsd.org Subject: Re: Best practice for shared volume with iscsi Dell MD3200i ? Message-ID: <20120511155153.GA31698@in-addr.com> In-Reply-To: <4FACCAEB.8040401@ibl.fr> References: <4FACCAEB.8040401@ibl.fr>
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On Fri, May 11, 2012 at 10:16:43AM +0200, Karl Oulmi wrote: > Hi all, > > I am trying to run two freebsd9 boxes with a 3.7 TO shared iscsi volume > on a MD3200i. > > The goal is to run a "master" and a "slave" dovecot IMAP server with a > shared /home. > > I created the shared partition like this : > gpart create -s gpt /dev/da0 > gpart add -t freebsd-ufs /dev/da0 > newfs /dev/da0p1 > > Everything is working great on the "master" server, but when I'm trying > to mount the volume from the "slave" one, I have the following error : > mount: /dev/da0p1 : Operation not permitted > > The only way I have to successfully mount the share on the "slave" > server is to run a fsck -t ufs /dev/da0p1 and then do the mount. > > Could anyone tell me what's wrong ? UFS is not a cluster-aware filesystem. You cannot mount it in multiple places at the same time. The best you can hope for in that situation, short of developing a cluster-aware filesystem, is to only mount the volume on the slave if the master fails. Regards, Gary
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