On Tue, Apr 7, 2015 at 1:03 PM, Hugo Mills <h...@carfax.org.uk> wrote: > On Tue, Apr 07, 2015 at 12:58:28PM +0200, arnaud gaboury wrote: >> On Tue, Apr 7, 2015 at 11:57 AM, arnaud gaboury >> <arnaud.gabo...@gmail.com> wrote: >> > >> > I plan to install my OS on a btrfs partition, with some subvolumes. >> > Once the partition has been btrfs formated, I mounted it somewhere, cd >> > and then run <btrfs subvolume create>. >> > >> > I did these two subvolumes for now: >> > # btrfs subvolume list . >> > ID 256 gen 6 top level 5 path var >> > ID 257 gen 7 top level 5 path home >> > >> > Now I am wondering if I need to create the root filesystem partition >> > (/)? If yes, is this correct: >> > # btrfs subvolume create root >> >> >> After more reading, it seems to me creating a top root subvolume is >> the right thing to do: >> # btrfs subvolume create root >> # btrfs subvolume create root/var >> # btrfs subvolume create root/home >> >> Am I right? > > Not how I'd recommend doing it. I'd say: > > # btrfs sub crea root > # btrfs sub crea var > # btrfs sub crea home > > Then fstab: > > LABEL=myfs / btrfs subvol=root 0 0 > LABEL=myfs /var btrfs subvol=var 0 0 > LABEL=myfs /home btrfs subvol=home 0 0 > > And finally, add this to your kernel command line in the bootloader > to specify how to mount root: > > rootflags=subvol=root > > Hugo.
Thank you Hugo. May you please tell why your recommendation is better than my settings, if I thereafter make root as the default sub-volume? I changed the root name to active and avoid any confusion: # btrfs subvolume list . ID 260 gen 17 top level 5 path active ID 261 gen 15 top level 260 path active/home ID 262 gen 16 top level 260 path active/var ID 263 gen 17 top level 260 path active/etc # btrfs subvolume set-default 260 . In this way, I will not need any kernel command line. > > -- > Hugo Mills | The trouble with you, Ibid, is you think you know > hugo@... carfax.org.uk | everything. > http://carfax.org.uk/ | > PGP: E2AB1DE4 | -- google.com/+arnaudgabourygabx -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
