Filesystem overlay ?

Anton Markov anton-F0u+EriZ6ihBDgjK7y7TUQ at public.gmane.org
Sat Feb 5 01:18:10 UTC 2005


Dave Stubbs wrote:
> William Park wrote:
> 
>> 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.
 >
> Apparently there are even more.  I found these by lurking in the slax 
> forums, watching threads between the Slax guy and people with all kinds 
> of suggestions to replace ovlfs.  Slax is a bootable CD Linux Distro 
> based on Slackware - you'd like it :-)  Apparently even lvm could be 
> made to do this, but that might be quite complex.

Yes, you can do a similar thing with LVM snapshots, but I think it only 
works for hard drives.


-- 
Anton Markov <("anton" + "@" + "truxtar" + "." + "com")>

GnuPG Key fingerprint =
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*** LINUX - MAY THE SOURCE BE WITH YOU! ***
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