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As part of upgrading / rebuilding with Ubuntu 16.04 LTS and the sheer amount of packages that come with the upgrade or port fresh install, I looked into how to speed that up a bit further. I mentioned already before apt-cacher-ng to run a local proxy and avoid downloading the same packages over and over for multiple systems. However on 2 systems I have a huge amount of sources.lists which makes even the apt-get update process very slow / time consuming. So I looked into how to speed that one up bit. in Fedora/CentOS/RedHat there is a tool called deltarpm which adds support for downloading the deltas to generate new or updated packages. The there is a similar tool in Ubuntu / Debian. Debdelta “debdelta is a program suite designed to compute changes between Debian packages. These changes (deltas) are similar to the output of the “diff” program in that they may be used to […]

Inspired by the Xen Orchestra Team https://xen-orchestra.com/blog/migrate-from-xenserver-6-2-to-6-5/ I wanted to upgrade my hosts to the latest Alpha for testing, but I didn’t want to mess around with burning a DVD and boot off it. Now this solution is not necessary faster than booting off a local DVD depending on network speed and the NFS server, and also that the upgrade is running sequential host by host. However I could kick it off and leave it alone for some while and when I came back it was all done. NOTE: This is not a strict online Upgrade. If you have HA configured the upgrade will try to move the VMs around to the available hosts before upgrading and rebooting, if not several weird behavior will occur. What do you need: From http://xenserver.org/overview-xenserver-open-source-virtualization/prerelease.html The XenServer 6.6 Alpha3 ISO (or latest) XenCenter Windows Management Console (The latest version belonging to the Xenserver version to be […]

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