https://code.launchpad.net/~juliank/ubuntu-release-upgrader/+git/ubuntu-release-upgrader/+merge/465148 speeds this up by roughly 35x for the default lxc container. For larger upgrades, the speed up should probably be even faster.
https:/ /code.launchpad .net/~juliank/ ubuntu- release- upgrader/ +git/ubuntu- release- upgrader/ +merge/ 465148 speeds this up by roughly 35x for the default lxc container. For larger upgrades, the speed up should probably be even faster.