Am 08.11.2014 um 23:17 schrieb James: > I'm trying to keep it as simple as possible (the old boot root swap > type of approach for btrfs is all I'm after for now. (simple). > > I have several system to experiment on, so once I get it figured out, > I'll try a more agressive set up. For now it's everything under > /root/ with subvolumes created under /root partition ? > > > /usr/local/ is the only thing I do special. The /home dir > is just me. So I'm trying to keep this simple and get > it working on 3 old boxes..
General rule(s) for subvolumes as I learned them: * create them if you want to separate things logically * use them if you want to use specific settings/parameters for specific directories/subvols: for example compression, quotas ... * use them if you want to use snapshots. A (btrfs-)snapshot is always based on a subvolume so if you want to create snapshots for particular areas you have to set them up as subvolumes in advance. Splitting it into /boot, /, /home and maybe /distfiles (no compression here ... ?) is a usual approach. Keeping it as simple as possible in the start is a good idea. You can always add subvols later ... and move things over ... As I see the howto and the steps about booting: http://wiki.gentoo.org/wiki/Btrfs_native_system_root#Embedding_an_initram_filesystem I didn't do it that way but used dracut for the initrd ... the ml-archives have some threads around learning this (combined with systemd and LVM stuff back then I spent quite some time ...). Canek's tool kerninst also helps here: https://github.com/canek-pelaez/kerninst
