Latest / Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Linux Server Storage Tiering with LVM Cache
In this episode, Lucas and Luna dive into Linux server storage tiering using LVM cache, a technique that combines fast SSDs with slower HDDs to create a hybrid volume. They explain how LVM cache works on a block level, using the 'cache' target in device-mapper to promote frequently accessed blocks to the fast tier. Lucas walks through a concrete example: setting up a cache pool with an NVMe drive backing a 4 TB HDD, using practical commands like 'lvcreate --type cache-pool' and 'lvconvert --type cache'. They discuss the two cache modes—writethrough for safety and writeback for performance—and…
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.