On Fri, 16 Aug 2019 at 09:18, Patrick O'Callaghan <pocallaghan@gmail.com> wrote:
I'm trying to rationalise space by moving my /var directory from its
own partition to /, as currently there's a lot of wastage. I've copied
/var to /newvar with rsync, and now want to mount /newvar as /var on
reboot by creating an entry in /etc/fstab. This is it (using /var-tst
for testing):

/newvar                                   /var-tst                ext4    loop            0 0

but I'm getting:

mount: /var-tst: failed to setup loop device for /newvar.

/var-tst exists, so that's the problem? The man page for mount states
that it will create the necessary /dev loopback device if it isn't
specified. Currently there are no loopback devices in the system, and
the loop kernel module is loaded.

The default scheme has /var as a directory.
Can you boot from live media? If so, you could just rename `/newvar` to
`/var` and edit fstab.

 

poc

PS Suggestions on how to move /var without all this jiggery-pokery are
also welcome.
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