On 08/15/2013 04:36 PM, Paul Wouters wrote:
On Thu, 15 Aug 2013, Reindl Harald wrote:
Am 15.08.2013 15:40, schrieb Paul Wouters:
We can't tell people to re-install from scratch every 6 months.
What we need is an "apt-get dist-upgrade" equivalent.
*we have*
http://fedoraproject.org/wiki/Upgrading_Fedora_using_yum
i currently count 450 dist-upgrade this way and the oldest
setups are upgraded from Fedora 9 to Fedora 18 - the only
stupid is that instead spend more effort in the yum-upgrades
waste all the time with preupgrade/fedup and whatever the
next inkarnation is known
I had tried preupgrade/fedup in the past, but it tried to stuff
too many files in /boot because my root partition was encrypted,
so this method was never usable for me. The wiki mentions that
files now go into /var/lib/fedora-upgrade (which btw should really
be /var/cache/fedora-upgrade) which is only available after asking
for my disk encryption password.
I'll try it for f18->f19, and if this got fixed that is a big step
towards running fedora longterm across releases.
AFAIK, during an upgrade, fedup stores all required rpms below
/var/cache/yum. This means, if you don't have a sufficiently large /var
partition, you are likely to hit similar issues as with preupgrade.
Though this is less likely to hit users than storing packages under
/boot, it's still possible to happen (it did happen to me).
Another issue I encountered with all 3 upgrade methods, was them not
being able to compute required disk space sizes correctly, occasionally
causing rpmdb corruptions (I did encounter this issue).
And yet another issue is the fedora-distribution occasionally carrying
packages with greater NEVRs in older releases than in newer release.
A pretty nasty such case had been F18 been equipped with a newer kernel
than F19 for a larger time frame.
Ralf
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