[Unionfs] unionfs and sys_readahead and squashfs

[Erez Zadok]

In message <1194629290.3270.2.camel at albrecht.rdi1.com>, Paul Albrecht writes:
> On Thu, 2007-11-08 at 20:55 -0500, Erez Zadok wrote: 
> > Paul, I'm happy to report that I wasn't able to reproduce this bug with
> > unionfs-2.1.8 and 2.6.24-rc1.
> > 
> 
> OK, Thanks for the update. I didn't explain how I got the kernel oops so
> to make sure the bug got squashed, here's how I triggered the oops using
> ubuntu 7.10:
> 
> echo "/mnt/bin/bash" > readlist
> mkdir -p /cow
> mount -t tmpfs tmpfs /cow
> mount -t unionfs -o dirs=/cow=rw;/=ro unionfs /mnt
> readahead-list readlist

Just to confirm, but on my Fedora Core system, there's just a program called
/usr/bin/readahead: I think that's the same one b/c it also takes an arg
which is a file list.  Right?

> > I've offered to help the ubuntu guys move to unionfs-2.x.  I hope now that
> > their new release is done, they'd have more time to work with me on this
> > upgrade.
> 
> When ubuntu git repos for kernel and module source get upgraded will that be
> for "gutsy gibbon" or "hardy heron?"

I don't know.  My understanding was that the apparmor patches are an issue.

> Paul Albrecht

Cheers,
Erez.