Michael DeHaan wrote:
For those using Cobbler for virtualization installs, I've commited a
change to the Mercurial repository that you will probably be
interested in.
Basically koan now uses the "virtinst" library to install virtualized
images rather than using "libvirt" directly. "virtinst" is the same
library that virt-manager uses to install virtual machines. So, how
does this affect the running of koan?
-- The biggest change is that koan now terminates very quickly, with
the rest of the virtual installation going on in the background.
This allows multiple parallel virtual installs if someone wants to do
it. This should make koan much more usable in batch context. If
you want to watch the installation progress, usage of xm or
virt-manager will allow that).
-- Koan also names each virtual system after the mac address they are
created with, such that they are unique. So no more "xenguest" and
"xenguest_1" kind of thing, which was error prone when you installed a
machine and then it crashed, causing naming conflicts. (--xen-name
will probably be removed from cobbler also, as it's no longer
needed). If you are using koan with "--system" instead of
"--profile", the MAC address can be controlled from cobbler, along
with other fine tunning arguments. If not, it will be randomly
generated. If anyone has any objections to this naming scheme, you
might want to speak up. I can think of a couple of alternate ways to
name domains automatically -- "$profilename_$timestamp" isn't so bad.
-- Koan no longer writes any files to /var/koan -- anywhere, because
it doesn't have to.
This is still undergoing some testing, but I would call it very stable
at this point. I'm just going to be tweaking output and error
handling a bit, if anything.
Further down the road, this will enable koan to do hardware virtual
installs and handle other virtualization types.
Note that depending on what distro you are running, Xen will save the
configuration files in one of the following:
/etc/xen
/var/lib/xen
/var/run/xen
So, if you have domains that get stopped, looking in those directories
will tell you which ones you have to start. Also on FC6 and later
you can experiment with "virsh" for management of inactive domains.
0.2.7 will probably be released sometime later next week ... unless
you want to play with the upstream code (please do, not too many
computers have exploded from using it, I promise)
--Michael
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Koan 0.2.7 (with the above virtualization changes) is now released.
I've used it quite a bit and it seems all stable and happy. If you find
problems, let me know. Pushed to the Fedora mirrors, otherwise grab
the RPMs from cobbler.et.redhat.com or build from source.
Thanks,
--Michael
