On Sat, Jan 11, 2020 at 03:44:21PM +1100, Andrew Greig wrote:
As it turns out the system does reference the drives by UUIDs.
So, my question is, "by fixing grub 2.8 will my RAID under BTRFS just work? Or will I have to run something to get it working as well?"
if you're not booting off the btrfs drives, grub doesn't need to know or care that they exist. All it needs to know about is where and what the root filesystem and /boot directory/filesystem are - i.e. what drive and partition and what kind of fs (e.g. ext2/3/4, xfs, btrfs, etc). The btrfs filesystem will be mounted AFTER the kernel has booted, mounted the the rootfs, and started the init process (probably systemd for newer systems, maybe sysvinit for older systems). It will use the contents of /etc/fstab to do that - and that's where it's important to use UUID or LABEL rather than hard-coding /dev/sdXn device names. In short as long as the /etc/fstab entry for your btrfs mount is correct, then it will work. craig -- craig sanders <cas@taz.net.au>