Ubuntu：从 Jaunty 升级到 Karmic 的问题

Question

当我尝试从 jaunty 升级到 karmic 时，我遇到了这个问题：

root@server:~# sudo do-release-upgrade
Checking for a new ubuntu release
Done Upgrade tool signature
Done Upgrade tool
Done downloading
extracting 'lucid.tar.gz'
authenticate 'lucid.tar.gz' against 'lucid.tar.gz.gpg'
tar: Removing leading `/' from member names

Reading cache

Checking package manager

Can not upgrade

An upgrade from 'jaunty' to 'lucid' is not supported with this tool.

我不知道为什么当我需要先升级到 karmic 时它会尝试升级到 lucid。我想它从某个地方得到了“清醒”这个词，但我不知道从哪里开始寻找。

Answer 1

解决了。结果 /etc/update-manager/meta-release 指向http://changelogs.ubuntu.com/meta-release并且该文件显示：

Dist: karmic
Name: Karmic Koala
Version: 9.10
Date: Thu, 29 Oct 2009 12:00:00 UTC
Supported: 0
Description: This is the 9.10 release
Release-File: http://archive.ubuntu.com/ubuntu/dists/karmic/Release
ReleaseNotes: http://changelogs.ubuntu.com/EOLReleaseAnnouncement
UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/karmic-proposed/main/dist-upgrader-all/0.126.9/karmic.tar.gz
UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/karmic-proposed/main/dist-upgrader-all/0.126.9/karmic.tar.gz.gpg

我下载了该文件，将“支持：0”更改为“支持：1”，并将该文件托管在我自己的网络服务器上，并将元版本指向我的服务器。效果很好。

不知道 Ubuntu 是否有原因想要使其无法进行此升级，或者是否不小心将支持更改为 0。