btrfs

using transparent compression in btrfs

by .pQd
to compress any newly added file/directory – mount the file system with option compression=algorithm:compressionLevel e.g.: to compress individual file or folder, without compressing everything else stored on given file system: to check compression ratio: to check compression property for an existing folder: for more details – see https://btrfs.readthedocs.io/en/latest/Compression.html

MySQL on BTRFS?

by .pQd
i’ve been running a set of production MySQL databases on BTRFS since April 2016. BTRFS is not exactly known for its stellar performance when hosting databases or images of virtual machines due to its COW nature. why would i do it then? to have data snapshots and be able to ‘go back in time’ quickly ... Read More

btrfs and nfs dont play nicely together

by .pQd
i use ghettoVCB to take backups of vmware esxi 6.5 vms. data is copied to a nfs share hosted on Debian Linux. for over a year i used btrfs partition as an underlying datastore for the nfs share. and i just could not get it to work for backups which size larger than available RAM ... Read More