Antony wrote:
I have a Debian system on really small Flash memory like an embed system. A hard drive is mounted onto the system. I want to add more processes to the system like mail server. But the problem is /usr, /var, /etc are running out of space on the Flash memory. I'm planning to do the following:

- make /usr, /var, /etc, /home directories on the mounted hard drive.
- copy /usr, /var, /etc, /home original directories to new created directories.
- edit /etc/fstab to mount these directories to new created locations.
- remove the old /usr, /var, /etc, /home directories.

Is that unsafe to do so?
Do files in these directories being accessed before mounting from /etc/fstab?

Doesn't it suffice to move just /var, /tmp and /home to the hard drive?
I would make one partition for /var and one for /home. Then link /tmp to /dev/shm which must be done in a boot script (see for example kernel documentation .../linux/Documentation/filesystems/tmpfs.txt).
--
Regards,
Jörg-Volker.


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