[clue-tech] nfs frustrations

[chris fedde]

running amd is the easy way around this. it unmounts file systems that
are not in use and remounts them on demand.  If you are using ubuntu
or debian you can install the am-tools package and have the daemon and
a basic config with the /net file system installed.
accesses to /net/system_name/exported_directory will "just work".
More complex configs are not that hard to add if you need them.

On Wed, Jun 3, 2009 at 4:22 PM, Angelo Bertolli
<angelo.bertolli at gmail.com> wrote:
> Ok so none of the options on an NFS mount do what I want it to do.  Maybe
> automount is the only solution, but for regular nfs...
>
> 1) There doesn't seem to be any way to get the system to automatically
> unmount a filesystem that is not responding
>
> 2) There doesn't seem to be any way to tell NFS to fail within 1 minute.  I
> know the maximum retrans timeout is supposed to be 60 seconds, but after
> tweaking it
>
> When a mount is unavailable (I'm using ls to test) ...
>   - soft/hard doesn't seem to make any difference (I'm using ro,noexec)
>   - retrans, timeo, retry don't seem to make any difference no matter what
> settings I use
>   - I've tried at least 10 combinations of the above, and ls returns with an
> IO error within 3 - 5 minutes every time.
>
>
> Oh well.  We're using nfs3.  Should I expect different behavior from nfs4 ?
>
> Angelo
>
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