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Last Build Date: Sat, 15 Oct 2016 11:16:30 +0000


Influence which PID will be the next

Sat, 15 Oct 2016 11:16:30 +0000

To restore a checkpointed process with CRIU the process ID (PID) has to be the same it was during checkpointing. CRIU uses /proc/sys/kernel/ns_last_pid to set the PID to one lower as the process to be restored just before fork()-ing into … Continue reading

Combining pre-copy and post-copy migration

Fri, 14 Oct 2016 15:19:57 +0000

In my last post about CRIU in May 2016 I mentioned lazy memory transfer to decrease process downtime during migration. Since May 2016 Mike Rapoport’s patches for remote lazy process migration have been merged into CRIU‘s criu-dev branch as well … Continue reading

HS100 – Wi-Fi Smart Plug

Mon, 08 Aug 2016 20:17:18 +0000

For my recently installed PXACB I was looking for a way to remotely power it on and off. I found the Wi-Fi Smart Plug “HS100” and a blog post that it can be controlled from the command-line. The referenced script … Continue reading


Thu, 21 Jul 2016 20:47:05 +0000

A long time ago (2007 or 2008) I was developing firmware for Cell processor based systems. Most of the Slimline Open Firmware (SLOF) has been released and is also available in Fedora as firmware for QEMU: SLOF. One of the … Continue reading

Updated RPM Fusion’s mirrorlist servers

Thu, 14 Jul 2016 17:44:50 +0000

RPM Fusion’s mirrorlist server which are returning a list of (probably, hopefully) up to date mirrors (e.g., still have been running on CentOS5 and the old MirrorManager code base. It was running on two systems (DNS load balancing) and … Continue reading

Protocol Changes In Fedora’s MirrorManager

Thu, 16 Jun 2016 20:15:16 +0000

There have been two protocol related issues with MirrorManager open for some time: Drop ftp:// urls from metalinks Add a way to specify you want only https urls from metalink Both issues have been resolved. The first issue, to drop … Continue reading

Lazy Process Migration

Wed, 04 May 2016 17:39:41 +0000

Process Migration Using CRIU it is possible to checkpoint/save/dump the state of a process into a set of files which can then be used to restore/restart the process at a later point in time. If the files from the checkpoint … Continue reading

Booting with syslinux

Mon, 11 Apr 2016 10:07:03 +0000

Having read about using syslinux as a boot-loader for virtual machines I tried to replace grub2 on one of the Fedora 24 virtual machines I am using with syslinux: Not completely knowing what to do I did: dnf install syslinux-extlinux.x86_64 … Continue reading

New MirrorManager2 features

Mon, 11 Jan 2016 20:58:41 +0000

The latest MirrorManager release (0.6.1) which is active since 2015-12-17 in Fedora’s infrastructure has a few additional features which provide insights into the mirror network usage. The first is called statistics. It gives a daily overview what clients are requesting. … Continue reading

Bimini Upgrade

Fri, 16 Jan 2015 15:26:59 +0000

I finally upgraded my PowerStation from Fedora 18 to Fedora 21. The upgrade went pretty smooth and was not much more than: $ yum --releasever=19 --exclude=yaboot --exclude=kernel distro-sync $ yum --releasever=20 --exclude=yaboot --exclude=kernel distro-sync $ yum --releasever=21 --exclude=yaboot --exclude=kernel distro-sync … Continue reading