Mounting Filesystem over existing directory
Sameer Naik
sameer.subscriptions at damagehead.com
Wed May 30 06:46:35 UTC 2012
Hello,
I have a rather unusual query.
Consider that i have a readonly filesystem mounted at / and that the
/etc folder consists of some files. Is is possible to mount a ramfs
filesystem at /etc such that the existing files in the /etc partition
are still accessible and any new files written to the /etc partition
are saved in the ramfs (which will be lost upon reboot).
To illustrate the query visually.
$ ls /etc
fstab mtab
$ (mount ram filesystem at /etc)
$ ls /etc
fstab mtab
$ touch /etc/file
$ ls /etc
fstab mtab file
$ umount /etc
$ ls /etc
fstab mtab
I hope this helps you understand my query.
Thanks and Regards
~Sameer
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