Comment 0 for bug 147080

Binary package hint: update-manager-core

Currently, do-release-upgrade will automatically disable third party repositories that it finds in /etc/apt/sources.list.

Better behavior is to ask the system admin what it should do.

Use case: I use apt-mirror to maintain a local mirror of Ubuntu repositories, in order to minimize my own bandwidth usage and to relieve strain on Ubuntu servers. Current behavior does not allow me to use the local network mirror, but instead sends me to archive.ubuntu.com.

Reasons:
1. As Ubuntu grows, demands on its servers will grow; local admins should have the option to point to other mirrors if they are confident of the currency of the mirror.
2. It is much, much faster to upgrade over a local network than to retrieve all the files over the network -- on the order of 10 to 15 times faster using 100 Mb Ethernet and 100 times faster on Gb Ethernet. If the admin has a non-trivial number of computers to upgrade, the admin will definitely want to use a local mirror.
3. Enterprise customers will likely want to fine-tune their upgrade paths to meet organizational requirements. The customer should have that option.

Happy Trails,

Loye Young
Isaac & Young Computer Company
Laredo, Texas
http://www.iycc.biz