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Re: how to force mounting an entry in fstab on boot?

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Am Mon, Oct 23, 2023 at 05:40:54PM +0200 schrieb hw:
> On Mon, 2023-10-23 at 16:53 +0200, Christoph Brinkhaus wrote:
> > Am Mon, Oct 23, 2023 at 04:17:11PM +0200 schrieb hw:
> > > Hi,
> > > 
> > > I have an entry in the fstab to mount an NFS share via IPv6.  For
> > > unknown reasons, the entry is being ignored on boot, so after booting,
> > > I have to log in as root and do a 'mount -a' which mounts the share
> > > without problems.
> > > 
> > > The entry in the fstab looks like this:
> > > 
> > > 
> > > [fd53::11]:/srv/example 		  /home/example/foo	  nfs	  _netdev      0 0
> > > 
> > > 
> > > I have another case in which machines need to be connected to a
> > > particular VLAN to mount home directories.  In case they are not
> > > connected to that VLAN, I don't want the boot process to proceed at
> > > all because the home directories won't be available.
> > 
> > You might need the "late" option of mount.  Its purpose is to mount when
> > prerequisites as the network are available already.
> 
> There doesn't seem to a 'late' option in the man pages.  Having
> '_netdev' is supposed to make sure that the network is up before
> mounting ...

Ups, that has been in my mind. It exists in FreeBSD but not in Debian.
> 
> I found this, though:
> https://unix.stackexchange.com/questions/349264/fstab-mount-wait-for-network
> 
> I'll try that, plus 'defaults'.

> 
> > > So how do I force it that the entries in fstab are not being silently
> > > ignored?  I want these shares either mounted, like through like 3
> > > retries, or booting to stop when they can't be mounted.
> > > 
> > I have never tried to implement things as 3x retries or so.
> 
> Well, the retries are not so relevant; I'd expect that to happen
> anyway.  But how can I stop the booting when a mount fails?
> 
> Alternatively, how can I prevent booting or have the machine becoming
> inaccessible when it's not connected to a particular VLAN?  Like the
> users can't log in and instead get a message that the computer is
> incorrectly connected ...
> 
You could start a crontab job to check the status some time after boot
or create a systemd unit after almost everything has been finished.

Kind regards,
Christoph

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how to force mounting an entry in fstab on boot? hw <hw@adminart.net> - 2023-10-23 16:20 +0200
  Re: how to force mounting an entry in fstab on boot? Greg Wooledge <greg@wooledge.org> - 2023-10-23 16:40 +0200
    Re: how to force mounting an entry in fstab on boot? hw <hw@adminart.net> - 2023-10-23 17:30 +0200
      Re: how to force mounting an entry in fstab on boot? David Wright <deblis@lionunicorn.co.uk> - 2023-10-23 21:10 +0200
  Re: how to force mounting an entry in fstab on boot? Christoph Brinkhaus <c.brinkhaus@t-online.de> - 2023-10-23 17:00 +0200
    Re: how to force mounting an entry in fstab on boot? hw <hw@adminart.net> - 2023-10-23 17:50 +0200
      how to bring up message and prevent user login when not connected  to a particular VLAN? (was: how to force mounting an entry in fstab on  boot?) hw <hw@adminart.net> - 2023-10-23 18:00 +0200
        Re: how to bring up message and prevent user login when not  connected to a particular VLAN? (was: how to force mounting an entry in  fstab on boot?) Christoph Brinkhaus <c.brinkhaus@t-online.de> - 2023-10-23 19:30 +0200
          Re: how to bring up message and prevent user login when not  connected to a particular VLAN? (was: how to force mounting an entry in  fstab on boot?) hw <hw@adminart.net> - 2023-10-27 21:10 +0200
      Re: how to force mounting an entry in fstab on boot? Christoph Brinkhaus <c.brinkhaus@t-online.de> - 2023-10-23 18:10 +0200

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