I had a power outage that took down my house server.

So I have reinstated an older slower 32bit system to replace the 64bit
new, 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 look.
It is rather difficult to read/respond to mail.....

Thought I would ask as there is so much system knowledge in our community
==John ffitch

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I had a power outage that took down my house server.

So I have reinstated an older slower 32bit system to replace the 64bit
new, 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 look.
It is rather difficult to read/respond to mail.....

Thought I would ask as there is so much system knowledge in our community
==John ffitch

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Some googling suggests that it can be issues with your kernel, several
people have reported hangs that go away if the just right magical
combination of kernel is used.

Other causes seemed to be unreachable lock daemons (it is a separate
server it appears)


On Sat, Apr 12, 2014 at 3:38 PM,   wrote:
> Thank you for the suggestion.  Unfortunately my problem is not this.
> I cn write to the remote disk, but cannot get a lock which movemail
> wants to ensure against losing mail.  At least I think it is a lock.
> I think it hangs on
>           status = flock (indesc, LOCK_EX);
> ---just confirmed that via strace.  oh well....
> ==John ff
>
> Quoting Anders Genell :
>
>> Dear John,
>>
>> I had some write access trouble with write access to a nfs mount a
>> while back, and was helped by this thread
>>
>> In my case it was because I not managed to export write access to the client.
>>
>>
>> http://forums.opensuse.org/showthread.php/409177-read-write-permission-NFS-server
>
>
>
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> Dominate Development with Jenkins Continuous Integration
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-- 

Saludos,
Felipe Sateler

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