Youmustusefedup0.8toupgradetoFedora20 (upgrade to Fedora20)

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I failed to upgrade Fedora 19 to Fedora 20 directly by running fedup sudo fedup -- network20, you must do this firstly, following vbraun's advice.

Sudo yum -- enablerepo = updates-testing update fedup

If you have failed with fedup 0.7, you can do this to avoid redownload packages, following AdamW's advice.

Sudo mv/var/lib/fedora-upgrade/var/lib/system-upgrade
Sudo mv/var/tmp/fedora-upgrade/var/tmp/system-upgrade

And then, import GPG-KEY, following Sayen's advice:

Sudo rpm -- import/etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-20

Finally,

Sudo fedup -- network 20

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For my case, before importing gpg key, error occured again:

...
Warning:/var/tmp/system-upgrade/rpmfusion-nonfree/packages/rpmfusion-nonfree-release-20-1.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID b5f29883: NOKEY
Importing GPG key 0xB5F29883:
Userid: "RPM Fusion nonfree repository for Fedora (20) "
Fingerprint: a84d cf58 46cb 10b6 5c47 6c35 63c0 de8c b5f2 9883
Package: rpmfusion-nonfree-release-19-1.noarch)
From:/etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-20

Downloading failed: Didn't install any key

At that moment, no one tell me a solution, so I ignored the KEY CHECK

Sudo fedup -- network 20 -- nogpgcheck

And, I works !!!

Sayen also adviced me to try this before run fedup. I think it better than the "-nogpgcheck solution ".

Sudo rpm -- import/etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-20

 

Thanks community: http://forums.fedoraforum.org/showthread.php? T = 295846

Fedora wiki also mentioned: http://fedoraproject.org/wiki/Common_F20_bugs#fedup-07-fail

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Some others problems:

Cpan does not work:

Attempt to reload Scalar/Util. pm aborted.
Compilation failed in require at/usr/share/perl5/Safe. pm line 4.
BEGIN failed -- compilation aborted at/usr/share/perl5/Safe. pm line 4.
Compilation failed in require at/usr/share/perl5/CPAN. pm line 56.
BEGIN failed -- compilation aborted at/usr/share/perl5/CPAN. pm line 56.
Compilation failed in require at/usr/share/perl5/App/Cpan. pm line 218.
BEGIN failed -- compilation aborted at/usr/share/perl5/App/Cpan. pm line 218.
Compilation failed in require at/usr/bin/cpan line 9.
BEGIN failed -- compilation aborted at/usr/bin/cpan line 9.

And another Perl script failed to start.

Perl API version v5.16.0 of Socket does not match v5.18.0 at/usr/share/perl5/XSLoader. pm line 92.
Compilation failed in require at/usr/share/perl5/Net/FTP. pm line 17.
BEGIN failed -- compilation aborted at/usr/share/perl5/Net/FTP. pm line 17.

The solution is to clear the old modules, following 3rensho's comment:

Sudo rm-rf/usr/local/lib64/perl5 /*
Sudo rm-rf/usr/local/share/perl5 /*

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