Red Hat Magazine has an
with Fedora developers Seth Vidal and Will Woods.
In Fedora, the supported method for upgrading from one release to the next
is by downloading the media and rebooting from the media and using
Anaconda. Why was this the case, and what's wrong with a yum upgrade?
Seth Vidal: Anaconda has the advantage of running outside of the system it
is upgrading. This means it can do certain tricks in the event of big
changes. The lvm->lvm2 migration, for example. Yum can't do this. Changing
the partition or fs type on a running partition is a bad idea :)
Will Woods: Another good example: In Fedora 9 we have (experimental) ext4
support, and Anaconda is capable of migrating your ext3 filesystems to ext4
automatically. But yum upgrades can't handle this.
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