OS version: Fedora WS 34
This is not a Fedora-specific question, per say. But, I am going run some storage related performance intensive stuff in my Fedora desktop. Hence thought of checking with the gurus in this forum.
I would like to combine 3 NVME M.2 SSD drives (each drive 2TB in size) to create a Volume group using Linux’s Logical volume manager.
I have 2 questions on this
Question 1. As I understand, in LVM, Physical volumes can be created either from attached hard disks(/dev/sda) directly or hard disk partitions (/dev/sda1) or in case of enterprise environment, a SAN LUN.
HardDisk ----> Partitions ----> PVs ----> Volume Group -----> LV
Which is better (performance or maintenance wise), creating the PV directly from /dev/sda or creating the PV from a partition ?
Question 2. Performance wise, which file system is better when LVM is used or in general ? ext4 or btrfs or something else ?