NFS broken after upgrading to 5.4
Kris Kennaway
kris at obsecurity.org
Thu May 26 08:41:02 PDT 2005
On Thu, May 26, 2005 at 07:49:53AM -0500, Viren Patel wrote:
> >
> > What does ^T show for the status of the 'hung' process?
> > Are you
> > certain that DNS resolution is working correctly on both
> > machines?
> >
> > Kris
> >
> >
>
> Thanks for your help. Interestingly when I tried the
> mounts this morning they all worked, so I can't provide ^T
> output. Go figure.
>
> Since my clients and the server are communicating over a
> private LAN, they don't use DNS. However
> /etc/nsswitch.conf contains:
>
> hosts: files dns
>
> and in /etc/hosts I have:
>
> 127.0.0.1 localhost
> 192.168.0.10 backuphost
>
> The problem occurred whether I used IP or hostname. I've
> also noticed that mount_nfs tended to succeed if preceded
> by a ping to the backuphost. I rebooted a client and tried
> mounting without ping and it worked just fine. It's all
> behaving really flakily. Basically it amounts to sometimes
> it works and sometimes it doesn't and there doesn't seem
> to be a pattern.
Are you sure they're not using DNS? i.e. will DNS queries to those
hostnames resolve? Have you observed the data traffic using tcpdump
to confirm no DNS lookups?
Kris
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