Filesystem overlay ?

[Adil Kodian]

this isnt any complex feature.

you have a CDROM mounted with /var on it that is read-only.

now you can create a ramdisk and mount it as /var (or whatever you need to
be writable.

it will overlay your existing /var and use the mounted /var. when you
reboot, everything is lost.

-----Original Message-----
From: owner-tlug-lxSQFCZeNF4 at public.gmane.org [mailto:owner-tlug-lxSQFCZeNF4 at public.gmane.org]On Behalf Of William
Park
Sent: Friday, February 04, 2005 2:35 PM
To: TLUG-lxSQFCZeNF4 at public.gmane.org
Subject: [TLUG]: Filesystem overlay ?


I would appreciate if someone with better memory can kick me in the
right direction...

Suppose you have read-only filesystem (eg. CD-ROM) mounted on /var.  Is
there some overlay feature that you can enable (in kernel or
filesystem), so that /var appears to be read-write while the system is
on.  But, when you reboot, you're back to original /var content.

I've remember something like this is possible in 2.6.  But, name or
keyword escapes me.

--
William Park <opengeometry-FFYn/CNdgSA at public.gmane.org>, Toronto, Canada
Slackware Linux -- because I can type.
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