LiveUSB and PackageKit Updates

[Jeremy Katz]

On Tue, 2008-10-14 at 09:15 -0400, Chuck Anderson wrote:
> On Mon, Oct 13, 2008 at 09:58:44PM -0400, Michael Solberg wrote:
> > Hi!
> > 
> > I'm sure someone's thought of this before, but I keep running into this
> > issue on the LiveUSB on the XO.
> > 
> > The issue is that /var/cache/yum is mounted as tmpfs on the Live image.
> > When I log into a desktop session that already knows my wireless key,
> > the updates applet attempts to download all the packages from Rawhide.
> > This fills the 256MB of RAM pretty quickly and that hangs the machine.
> > Does it make sense to turn that applet off in this case?  Or maybe not
> > mount /var/cache/yum as tmpfs when there's an overlay?
> 
> I can easily fill the overlay and crash the LiveOS with ext3 errors.  
> Has any thought been put into how to solve this problem?

The only real way to solve it is to move away from using dm-snapshot for
the overlay and have some form of real unionfs.  But that has its own
level of "fun" problems that seems to go nowhere fast :/

Jeremy