btrfs coming to Fedora 33 - soon October 2020

btrfs is coming to Fedora 33
https://fedoramagazine.org/btrfs-coming-to-fedora-33/

Copy on Write file-systems normally aren't great with regard to databases, so lets be prepared for when this happens we need to examine:

• What are performance differences with btrfs compared to ext3/xfs?
• Are the MariaDB options that can assist with performance (disable double write buffer in default)?
• Are there packaging options (like a btrfs subvolume for /var/lib/mysql with specific set of optimized parameters)
• Are separate volumes needed/desired for redo, undo, binlog?
• Can the aspects of the btrfs volume be auto-detected and some auto-tuning of mariadb to its configuration?
• Do features like FIDEDUPERANGE need to be explored for Alter table copy table schematics?
• Is snapshot consistent and suitable as a backup and/or SST mechanism?

FYI: mschorm axel