Pilgrim, kadischi, and stateless (was Re: [Fedora-livecd-list] pilgrim livecd work)
David Zeuthen
davidz at redhat.com
Fri Sep 22 15:11:50 UTC 2006
On Thu, 2006-09-21 at 20:52 -0700, Toshio Kuratomi wrote:
> Multiple writable fs's should be okay as long as the merged filesystem
> only writes to a single fs. Say the last writable fs added to the
> stack. Allowing writes to several layers in the stack is... not
> something I want to attempt :-) Maybe you could create a simple unionfs
> using fuse, although it might sacrifice performance for convenience....
There appears to be at least two of them
http://funionfs.apiou.org/?lng=en
http://podgorny.cz/moin/UnionFsFuse
Not sure whether this
a) works with rootfs e.g. "/"; (the former claims it doesn't)
b) whether it requires us to pull in this user space code in the
initramfs (which is entirely possible) or whether we can do
a trick to remount rootfs later
c) provides adequate performance
Btw, I'm planning to include the http://www.bootchart.org/ stuff [1] in
the livecd; ideally we'd just turn it on by passing 'bootchart' via
grub. Then it's much easy to evaluate c) and also other stuff. TBH, I
haven't starting comparing performance of the pilgrim livecd's against
other livecd's yet...
Then again, this is only really interesting for the persistent livecd
use-case and I'm not sure how important that is at this point.
David
[1] : Does anyone know if this is in Extras? Can't seem to find it.
More information about the Fedora-livecd-list
mailing list