Re: 2.6.39 kernel images [was: The Status page of Debian-Live is cryptic]

[Michal Suchanek <hramrach@centrum.cz>]

2011/5/31 Jordi Pujol <jordipujolp@gmail.com>:
> Hello,
>
> A Dimarts, 31 de maig de 2011 09:44:41, Michal Suchanek va escriure:
>> Since you are building kernel images you can also include overlayfs
>
> Overlayfs is easy, very fast, and reliable, (today is solved his last known
> bug),
>
> However, for a Debian Live system we should note that there is a key difference
> between overlayfs and aufs or unionfs, it mounts only one read-only directory
> (or loop mounted squashfs file).
> When a Live system is composed of several compressed squashfs files, the
> initramfs program may be modified to mount overlayfs using the big
> filesystem.squashfs file as lowerdir, next mount every one of the rest of the
> compressed files in a temp directory, copy ( cp -af ) their data over the
> rootdir, and unmount them.

Or you can mount one on top of the others. The lower layer need not be
readonly, it just should not be modified.

Thanks

Michal