Re: Loopback mount in fstab fails

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On Sun, 2019-08-18 at 08:06 +1000, Cameron Simpson wrote:
> On 17Aug2019 12:01, Patrick O'Callaghan <pocallaghan@xxxxxxxxx> wrote:
> > On Sat, 2019-08-17 at 09:38 +1000, Cameron Simpson wrote:
> > > Really, all you need to do is to remove the /var fstab entry, umount 
> > > the
> > > existing /var mount, rsync /newvar BACK INTO the stub /var mountpoint
> > > which is there, scrub /newvar.
> > 
> > /var cannot be unmounted while the system is running (see above).
> 
> "umount -l /var" is your friend. See "man 8 umount".

Nice, I hadn't known about that.

> You could (roughly):
> 
>   mkdir /newvar
>   rsync -a /var/ /newvar/   # note trailing slashes
>   umount -l /var
>   rmdir /var
>   mv /newvar /var
> 
> and scrub the fstab entry. Then reboot to make everything use the new 
> tree.

I'll keep it in mind for next time (there's always a next time).

Cheers

poc
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