Category Archives: Fedora

qemu/kvm libvirt and trim with Fedora 25

Posted on 15. July 2017 by Jens Kuehnel

Hi, after more then 10 years of using VMWare Workstation (Starting with VMWare Workstation 5). I’m in the process of moving to KVM/libvirt, but I want to use qcow2 with trim support. I’m using Fedora 25 with virt-manager to create … Continue reading →

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Citrix Reciever and SELinux

Posted on 04. July 2017 by Jens Kuehnel

Hi Internet, sorry for the longtime being absent from this blog. But marriage and a child takes time and the blog was the first to go. But I will restart writing blog posts today with a project I started a … Continue reading →

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We need 64bit, everywhere!

Posted on 02. July 2015 by Jens Kuehnel

Just bought a new 8TB disk drive. Following my standard procedures I run a badblock -w against the disk as burn in test. Running on Fedora 20 on x86_64 I was surprised to see this: badblocks -v -v -w /dev/sdf … Continue reading →

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my T-Shirt

Posted on 02. July 2015 by Jens Kuehnel

root is god selinux is blasphemy

Posted in Enterprise Linux, Fedora, Linux | Tagged | 2 Comments

yum vs. dnf

Posted on 26. September 2014 by Jens Kuehnel

Sorry for the long silence. I will try to post more often from now on. I playing around with dnf, which is the package manager that should replace yum in the future and had some very nice insight. [root@mysystem ~]# … Continue reading →

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Bachelor Thesis: Centralized and structured log file analysis with Open Source and Free Software tools

Posted on 22. October 2013 by Jens Kuehnel

After a lot of hard work I finished my bachelor thesis end of August and gave my colloquium end of September. Because of all the other stuff going on in my life I just have now time to upload my … Continue reading →

Posted in Enterprise Linux, Fedora, Linux, logs | Tagged , | 1 Comment

uptime madness, or why do you need to reboot just because you replace the harddiscs?

Posted on 13. July 2013 by Jens Kuehnel

I just got an new HP Microserver for a customer. I only had two 500GB disc available and installed Centos onto it. But now the 4* 3TB discs have arrived and I need to move everything from the 2 small … Continue reading →

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Thank you Seth Vidal, my first ansible playbook

Posted on 12. July 2013 by Jens Kuehnel

I was shocked when I heard about Seth Vidal’s death. Of course I use yum daily, but it brought tears to my eyes, when I was reading my  “my TODO List after a install” and realized that Seth was one … Continue reading →

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my TODO List after a install

Posted on 29. June 2013 by Jens Kuehnel

I had to reinstall a couple of machines recently and I had to do the same thing more then once. So I wrote a script,and for my own future self I post it here, as reference. sed -e ‘s:ONBOOT=no:ONBOOT=yes:’ -i … Continue reading →

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Be carefull when updating from RHEL6.1 to RHEL6.4

Posted on 17. June 2013 by Jens Kuehnel

If you have a RHEL6.1 and try to update to RHEL6.4, you will get some strange errors, about missing libraries. The reason is that ldconfig will not run anymore, because /etc/ld.so.conf.d/kernel-2.6.32-* sepcifies hwcap 0 till RHEL6.1 and RHEL 6.2 and … Continue reading →

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