Linked by Thom Holwerda on Tue 9th Jun 2009 09:34 UTC
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http://fedoraproject.org/wiki/Interviews/PreUpgrade is a reasonable explanation. Best canonical reference we can find after a quick chat on IRC. mostly it's in IRC logs or mailing list threads.
[q]you can actually update between Fedora releases with yum, we just don't support or emphasize this method.
Why not? Similar methods are supported on Debian, Arch and other systems.
[q]
In fact upgrading a system like this using this piecemeal method is a very good way of ending up with a very broken system and is a very,very dumb idea to begin with.
Not to even mention the time,expense and bandwith wasted on downloading and installing every pidling upgrade that comes along the pike.






Member since:
2005-08-02
Why not? Similar methods are supported on Debian, Arch and other systems.
If you ask our release engineering team and yum engineers they will give you a very long list of reasons why in-place upgrading can never be entirely a safe proposition.
Is this documented anywhere?