Bristol Digest, Vol 545, Issue 7

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Today's Topics:

1. NFS trouble (john ffitch)
2. Re: NFS trouble (Keith Edmunds)


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Message: 1
Date: Sat, 12 Apr 2014 16:58:33 +0100
From: john ffitch <jpff@codemist.co.uk>
To: bristol@mailman.lug.org.uk
Subject: [bristol] NFS trouble
Message-ID: <6376-Sat12Apr2014165833+0100-jpff@codemist.co.uk>

I know I asked this before but it is causing significant pain.

Background: my house server has a hardware issue and cannot boot, so
I have reinstated an older slower 32bit system to replace the 64bit
new old, the replacement having been the server until 12 months ago.
Both run/ran Debian

I have the replacement hobbling along, but one service does not work
which is critical. All mail is handled by exim on the server to
mailboxes in user space. Mail is (was) collected by emacs and
NFS-mounted server disk.

Now emacs/movemail hangs when collecting mail, apparently related to
locking although the code is obscure. If I use the alternative mail
read -- to not delete the mail, it works and I suspect has no need to
lock.

What can I do? It used to work so I suspect a mis-configuration on the
Debian machine but have no idea where to loo.

==John ffitch



------------------------------

Message: 2
Date: Sat, 12 Apr 2014 17:31:50 +0100
From: Keith Edmunds <kae@midnighthax.com>
To: bristol@mailman.lug.org.uk
Subject: Re: [bristol] NFS trouble
Message-ID: <20140412173150.462c0af2@ws.the.cage>
Content-Type: text/plain; charset=US-ASCII

On Sat, 12 Apr 2014 16:58:33 +0100, jpff@codemist.co.uk said:

> All mail is handled by exim on the server to
> mailboxes in user space.

What do you mean by "user space" in this context? "User space" typically
refers to programs/memory other than kernel space, so I think you're
using the wrong term. Tell us what you mean, not what you think it's
called.

> Mail is (was) collected by emacs and NFS-mounted server disk.

What do you mean by saying mail was collected by "NFS-mounted server disk"?

> Now emacs/movemail hangs when collecting mail, apparently related to
> locking although the code is obscure.

Why do you believe this is a locking-related issue?

> If I use the alternative mail
> read -- to not delete the mail, it works and I suspect has no need to
> lock.

What do you mean by "the alternative mail read"? Do you mean another mail
program (Mail User Agent, or MUA)? If so, which one, and how it it
accessing the mail? IMAP, direct reading of mbox, some other way?

Trying to piece this together: you have a server that receives mail and
delivers it to a local disk. That disk is NFS exported, and mounted on
another system (again via NFS). You're having problems reading the mail on
that second system using Emacs, but another mail program can read it. Is
that correct?
--
Blog: http://goo.gl/iOwv1w

"You can't live a perfect day without doing something for someone
who will never be able to repay you."



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End of Bristol Digest, Vol 545, Issue 7
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