On Sat, Apr 21, 2012 at 7:50 AM, Wido den Hollander <w...@widodh.nl> wrote: > Hi, > > I'm not a big fan of all the bash scripts which are being called on KVM > system for deploying the System VM's. > > They try to mount the guest, inject data (like SSH keys) and then continue > the boot process of the guest. > > It's something I don't like and I think libguestfs [0] can help here. > > With guestfish [1] you can access the VM and modify its filesystem: > > guestfish <<_EOF_ > add disk.img > run > mount /dev/vda1 / > write-append /root/.ssh/authorized_keys "ssh-rsa XXXXXX...." > _EOF_ > > Imho this would be a much cleaner way to modify the System VM's without > having to set up loop devices, mount them, etc, etc. > > The nice thing with libguestfs is that you can access the VM's while they > are running (use with caution!), so that gives you much more flexibility! > > There is a native C API, but there also seem to be Java bindings [2], so > that could make it much cleaner to integrate into CloudStack. > > libguestfs also seems to be present in Fedora [3] and in RHEL 6, so that > shouldn't be a problem. > > Searching the web showed me some reports of libguestfs and CloudStack, but > browsing the code I found no reference to this. > > Something worth looking at I think? > > Wido > > [0]: http://libguestfs.org/ > [1]: http://libguestfs.org/guestfish.1.html > [2]: http://libguestfs.org/guestfs-java.3.html > [3]: https://fedoraproject.org/wiki/Features/libguestfs
Yes please - guestfish would likely make this far more efficient all the way around. --David (whose opinion doesn't matter much because I don't maintain the systemvms :) )
