I have a couple KVM machines:
1 l ~/VMs
2 -rw-r--r-- 1 void users 1,986,002,944 09-17 09:11 | archlinux-current.qcow2
3 -rw-r--r-- 1 void users 2,451,505,152 09-17 09:14 | centos-7.qcow2
4 -rw-r--r-- 1 void users 3,032,350,720 09-17 10:06 | freebsd-103.qcow2
5 -rw-r--r-- 1 void users 1,813,512,192 05-20 20:03 | netbsd-70.qcow2
6 -rw-r--r-- 1 void users 843,251,712 05-20 18:55 | openbsd-59.qcow2
7 -rw-r--r-- 1 void users 6,452,215,808 09-17 09:21 | ubuntu-1204.qcow2
8 -rw-r--r-- 1 void users 6,224,478,208 09-17 09:22 | ubuntu-1404.qcow2
9 -rw-r--r-- 1 void users 4,264,034,304 09-17 09:24 | ubuntu-1604.qcow2
Only for testing purposes. "Does $foo run on $bar?"
I upgraded my FreeBSD box from 10.2 to 10.3 today. I followed the
guide at [1]. It took pretty long, almost 1.5 hours, but this may
have been due to slow internet.
Upgrading OpenBSD from 5.9 to 6.0 was much quicker. I booted into the
install kernel, hit a few buttons, and was done.
NetBSD (7.0 to 7.0.1) was pretty easy, too. Boot from an installation
ISO, choose "upgrade" and wait. Didn't take long.
This was the first time that I actually upgraded these BSD boxes. In
the past, I simply did a clean reinstall from scratch. I also used to
think that BSD upgrades are painful. In the past, this may have been
true -- no idea, really, I never went through. But these few upgrades
today were just a piece of cake.
Of course, since those are only base images, I don't have any
additional packages/ports installed. Just the base systems. This makes
things easier.
____________________
1. https://www.freebsd.org/releases/10.3R/installation.html#upgrade-binary
