Situation I have 1 HDD with data on it, and two new, empty HDDs. All 3 disks have the same size (10TB). Data: SDC New: SDE New: SDF I want to go for a RAID5 using all 3 HDDs, without losing data. For this to work, the idea is to: Read more…
In November 2019 I wrote about how to update the PHP version on a Amazon AWS EC2 Linux instance to PHP 7.2. At that time, PHP 7.3 was already a year available. As PHP 7.2 is out of support since November 2020, the next available release on EC2 AMI Linux Read more…
I run an SAP NetWeaver ABAP Dev Edition system in a Virtual Box VM. Unfortunately, the update process for this software is to delete and reinstall after the DB license expires. Installing a new NW ABAP version is not overly complex: the SAP provided installer is easy to use and Read more…
Some time ago I wanted to add a new mount point for Docker files in Proxmox. As Proxmox uses logical volumes to manage its storage, I had to find out how to assign a 200 GB part out of the data volume. Proxmox does this automatically when a new VM Read more…
Raspbian is based on Debian. Upgrading it to the latest version is done the same way as upgrading a normal Debian distribution. To not make this my shortest blog ever, I’ll show how I upgrade one of my Raspberry Pi. The upgrade to release N is performed by starting the Read more…
I have a RAID5 consisting of three 10TB HDDs. This RAID5 has a total capacity of 20 TB. I bought a new 10 TB HDD that I want to use to extend the RAID5: 4 HDDs with a total capacity of 30 TB. The file system on md0 is ext4. Read more…
Running a server allows you to do a lot of stuff from remote. Copying files is one of those tasks you can do from anywhere on the world while being logged on via SSH. For this task it is good to know the speed of read/write to get an idea Read more…
Scenario The HDDs are in an external USB case. RAID5 with 3 HDD (10TB) Software RAID5 with mdadm and Debian Linux Adding a new disk When you add a new HDD to an existing RAID, a sync is started. In my case I added a 10TB disk to a RAID5. Read more…
My internet provider is Unitymedia. Their default router comes with a DHCP server. Honestly, it’s one of the worst products I ever had to work with. My private network is 192.168.0.x. The DHCP server of the Unitymedia box is distributing from time to time leases for 192.168.192.x. Changing my private Read more…
Recently I had the problem that running apt-get update stalled while trying to connect to an IPv6 address. For instance, on a Raspberry Pi, the update process stalls while trying to connect to archive.raspberrypi.org. All other connections worked fine. Looking at the console output, a difference was that apt was Read more…