linux

Cephfs is great. It can be used to store and share files and can take advantage of the granularity and performance of Ceph. Big amounts of data can be stored and live snapshots can be taken so remote backups can be easily performed. [Read More]

One of the interesting features of BTRFS is the dynamic snapshot generation, which grantees the possibility to have a perfect and immediate copy of a specific path. [Read More]

Sometimes containers log a lot of things, and the logfile can become huge. This happens because containers aren’t supposed to run for a long time but to be created/disposed regularly. Here’s how to fix this. You have to instruct Docker, at launch, and tell how much you want the log file to grow before rotating and how many old logs you want to keep. For example, --log-opt max-size=50m --log-opt max-file=5 [Read More]

I’ve been using BTRFS for years and I’ve had few problems. Some of them are small and can be avoided with some smart improvements. [Read More]

Sometimes servers can become unresponsive. Both physical and virtual, you may be unable to connect to them, especially when overloaded. So a watchdog can be a solution. [Read More]