[Fedora-livecd-list] overlay exhaustion solution ???

[Bruno Wolff III]

On Thu, Feb 13, 2014 at 09:38:53 -0500,
   John.Florian at dart.biz wrote:
>I just had interesting (or incredibly stupid) idea concerning the critical
>limitation of the live overlays where the host crashes with bus errors
>when the temporary space for the COW is exhausted.  Is it possible to use
>trim/discard support to mitigate some of the unidirectional growth for
>when files are deleted and/or overwritten?  Conceptually it seems like it
>is a good fit, but I've not investigated the practicality.  Just curious
>if this has been explored or if there are easily known reasons why this
>wouldn't work.

I don't think this will help. You aren't going to recover space from the 
base file system, because it never changes. As more an more packages 
are updated you are going to use more space in the overlay area. 

Portable flash drives are getting cheaper and you might consider getting 
one large enough for a normal install and use that instead of a live image. 
Depending on how much you are installing, a 64 GB flash drive is probably 
large enough.