[gentoo-user] Linode discontinuing Xen, migrating to KVM

[Tanstaafl]

Ok, so just got the notice that Linode is discontinuing their support
for Xen, and forcing everyone to migrate their VMs to KVM.

Of course this comes at the worst possible time for me, when I'm out of
the country, and won't be back before the deadline (the 9th).

I have a week, so am trying to do everything I can to ensure they come
up successfully. I have two, one production, and a second one we were
going to use as a dev/test server, but in reality, we don't use it,
although I want to keep it running too (will perform the migration on it
first).

I'm especially worried, because these VMs are running an ancient web
application that requires older versions of Apache, PHP and Postgresql,
so cannot be and haven't been updated in a very long time (I kept them
up to date as long as I could by pinning the old apps and testing
updates on the dev/test server until it just got to be too much work)...

They are both (thankfully) running a current Linode kernel, so I HOPE
this migration won't kill either of them.

One thing I do seem to recall is there was somewhere that I had to
define Xen as the virtualization environment being used, but I can't
remember where I did that. Was that in the kernel config? If so, their
tool should (hopefully) handle that change.

Anyway, was hoping some kind souls here might give me a few things to
check and possibly do proactively to ensure a smooth transition.

Emerge --info for each one attached

Thanks!

emerg--i