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Last Build Date: Sun, 01 Oct 2017 17:10:06 +0000

 



Lazy Migration in CRIU’s master branch

Sun, 01 Oct 2017 16:32:24 +0000

For almost two years Mike Rapoport and I have been working on lazy process migration. Lazy process migration (or post-copy migration) is a technique to decrease the process or container downtime during the live migration. I described the basic functionality … Continue reading



Linux Plumbers Conference 2016

Fri, 20 Jan 2017 09:34:20 +0000

It is a bit late but I still wanted to share my presentations from this year’s Linux Plumbers Conference: https://lisas.de/~adrian/pdf/lazy-process-migration.pdf https://lisas.de/~adrian/pdf/criu.d.pdf https://lisas.de/~adrian/pdf/criu-check-only.pdf On my way back home I had to stay one night in Albuquerque and it looks like the … Continue reading



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



PXCAB

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., http://mirrors.rpmfusion.org/mirrorlist?repo=free-fedora-rawhide&arch=x86_64) 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