Re: NFS problem with showmount -a
From: Doug Freyburger (dfreybur_at_yahoo.com)
Date: 02/21/05
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Date: 21 Feb 2005 12:03:40 -0800
Ashwini wrote:
>
> showmount -a 192.168.16.82
> this gives output as
> All mount points on ASHWINI:
> *:/home/ashwini/share
> *:/home/mac
> 127.0.0.1:*
> 192.168.16.81:*
Star? I hoped for /mnt/ashwini.
> But the problem we are facing is even if the client with IP address
> 192.168.16.81 unmounts the share using "umount command", still the
> showmount -a command shows that 192.168.16.81 client is connected..
>
> The command we are using to unmount the share on client's machine is
> "umount /mnt/ashwini"
>
> Can anybody tell us where are we going wrong??
> Is it the nfs service on the client's machine causing the problem??
/etc/rmtab maintains a list of client mounts minus client
umounts. So if five years ago some client mounted your
/tmp, crashed and was rebuild, that client is still in
/etc/rmtab. After all it never got the chance to do a
umount so it never got removed from /etc/rmtab.
At one point I took up flushing /etc/rmtab with /dev/null
at boot time before the NFS service was started on all of
my NFS servers. It worked okay until I worked up to over
a year of uptime on many of them. Uptime is now usually
limited by the regular patch cycle more than any other
item.
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