Hi,
On 04/21/2012 10:13 PM, Chiradeep Vittal wrote:
Dunno..last time I checked, Ubuntu 10.04 did not have an "out-of-the-box"
guestfish.
Has this changed?
No, it hasn't.
The new Ubuntu LTS 12.04 is coming out in a couple of days though and
that will ship with guestfish [0].
I don't have the time right now to work on this, but in a later stadium
I think it would be a nice project. With the clean Java bindings for
libguestfs we could get rid of a lot of nasty BASH scripts and make this
code much more reliable.
This would also pave the road for running System VM's from RBD, which I
don't see happening with the current BASH scripts.
Wido
[0]: http://packages.ubuntu.com/precise/guestfish
On 4/21/12 12:52 PM, "David Nalley"<da...@gnsa.us> wrote:
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 :) )
