[CLUG-tech] wainting long for nfs mount

[Buchan Milne]

On Sat, 21 Dec 2002, Pieter Breed wrote:

> Hi
>
> I am using Gentoo Linux on two P3 systems at home, one of which has a certain
> directory which can be shared between the two pc's (/usr/portage).  I have
> never used NFS before, but I got the howto and followed every step to the
> letter.
>
> What happens is this:
> 1) - I export the dir. from pc 'romulus' to pc 'mika' with options ie:
> (/usr/portage    mika.langenhoven(rw,sync,no_root_squash) )
>
> 2) - I mount (on pc B) the remote export as follows
> 'mount -t nfs romulus:/usr/portage /usr/portage'
>
> 3) - I wait and wait and wait and wait some more ..
>
> 4) - The mount completes, everything is as it should be, al is working fine.
>
> My problem really is the long wait for the mount to complete.  'mika' should
> do this mount every time that the pc boots, and being the 'other' pc in the
> house that is quite frequent.
>
> To throw on this fire; If I mount the nfs volume from 'romulus' itself
> (pointless I know) it mounts immediately, no lag whatsoever.
>
> I suspected that it might be a DNS problem...  My DNS setup is as follows:
> on romulus, I have dnsmasq installed, definition for
> 192.168.13.2	mika
> 192.168.13.1	romulus
> pc 'mika' uses these ip's ...
>
> Does anyone here a suggestion for me on how I can improve the performance of
> the mount?
>

Ensure that host resolution (forward and reverse) works, or add the hosts
in question to your /etc/hosts file.

Are you getting pauses ssh'ing between them (the other telltale sign that
name resolution isn't working).

Basically, most ip/host/domain-based access control's will try
reverse-looking up the ip of the client.

I assume you have portmap etc running on both machines.

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Buchan Milne                Mechanical Engineer, Network Manager
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