I have few KVM virtual machines that, for some reasons, I use to backup from time to time. Some of their virtual disks (let's call them VM-hdd) are stored just as a plain raw-uncompressed file (see qcow2) while others are…
Speed up bzip2/xz compression
If you have a SMP system and wonder if exists such thing that can help you to use all CPUs to compress/decompress a file then the answer is YES, there is. It is PBZIP2 - the tool that speed up…