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Process for upgrading:
host# vserver zun exec bash
zun# apt-get update
zun# apt-get dist-upgrade
zun# apt-get clean
(sometimes you have to run upgrade over and over until it goes through. some trouble with not being able to remove files. probably related to the immutable link invert stuff).
The upgraded files do not have the Immutable Link Invert attribute set, so we set it:
host# /root/lockref
By upgrading packages, we have broken many of the links to the instances. The instances still point to each other, however, since the files are hard links. To restore the links to the reference, we need to run update-links:
host# /root/update-links blue apache php4 bash
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