Re: Working around problems when an NFS server dies / is unavailable.

richard childers / kg6hac <[email protected]>
Newsgroups gmane.os.freebsd.devel.mobile,gmane.os.freebsd.questions
Message-ID <[email protected]>
Make sure no one (including you) is using (including your shell's current working
directory) the directory which is acting as a mount point, when you umount(8).

Otherwise, you'll get a message about the filesystem being in use ...  (-:


-- richard


lewiz wrote:

> On Sat, Jan 04, 2003 at 04:52:48PM -0800, richard childers / kg6hac wrote:
> > I seem to recall a 'nomount' option in fstab(5), the manual page that
> > describes the contents of the /etc/fstab ('filesystem table') file.
> >
> > That plus amd(8) should, in theory, get you a relatively stateless NFS
> > connection.
>
> I must admit, I've never worked with amd but it may be worth a try -- it
> can't be any worse than the situation I'm in at the moment.  Thanks for
> bringing it to my attention ;)
>
> > I've had some success using 'umount -f' to forcibly umount NFS filesystems,
> > from the client side, in the past.
>
> This surprised me.  I had assumed a forced umount would actually force
> the umount, yet, it seems not to have done.  I am confuzed as to what is
> and what isn't a bug (often I'm screwing things up myself, I'm sure).
> Do you think this would count as a bug?  If other people have had
> problems too, it almost suggests it might be.
>
> > However, NFS, while stateless in intent, is really not a good
> > infrastructural element for a plug-and-play network. Plugging in is easy;
> > unplugging may require an explicit shutdown to properly deallocate
> > resources.
>
> Yeah, I'm starting to learn this now.  I don't really know what else to
> use.  I've heard of CODA and even AFS but I don't know their suitability
> to my purpose.  I think I might do a bit more research then ask again on
> this list.
>
>   Thanks for your information, I'll go read about amd ;)
>
> -lewiz.
>
> --
> All true wisdom is found on T-shirts.
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