[arch-general] BTRFS, Rollback, Grub2

[1126]

On Mon, 20. Aug 13:49, C Anthony Risinger wrote:
> 
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> 
> On Mon, Aug 20, 2012 at 7:53 AM, 1126
> <mailinglists at elfsechsundzwanzig.de> wrote:
> > Hello List!
> >
> > I can't seem to get rollback-support from mkinitcpio-btrfs to work
> > properly. I've installed ArchLinux more or less like it is shown in the
> > wiki-article btrfs-on-root:
> > https://wiki.archlinux.org/index.php/Installing_on_Btrfs_root
> >
> > I changed it some, because I wanted to install ArchLinux on an
> > encrypted btrfs-root.
> >
> > But my root-partition contains a __snapshot folder and an __active
> > subvolume, but no subvolumes for __home and __usr and such, because I
> > want to be able to make complete snapshots of my system.
> >
> > But when I want to create a snapshot, it asks me where I want to do it,
> > but I can't give __snapshot as target-folder, because it don't exists in
> > my system... ;)
> >
> > So: how should my btrfs-root be mounted in order to be able to make full
> > use of the rollback-feature provided by mkinitcpio-btrfs?
> >
> > Thanks in advance for your help,
> 
> yeah ... someone or something completely botched that page, to where
> it neither reflect the original design goals nor improves upon them.
> far too much noise and pointlessness (like outbound links to FHS ...
> who the @#$% cares?!)
> 
> in short, you need something like this in fstab or equiv:
> 
> /dev/disk/by-label/btrfs-root  /var/lib/btrfs-root  btrfs
> defaults,noatime,subvolid=0  0  0
> 
> ... you need to mount `subvolid=0` or `subvolid=5` (same thing)
> somewhere, and make snapshots from there.  subvolid 5 (for which 0 is
> an alias) is hard-coded to the top-level root.
> 
> maybe try this:
> 
> https://wiki.archlinux.org/index.php?title=Installing_on_Btrfs_root&oldid=185175
>

Hey, thanks! I now can create snapshots in __snapshot
(/var/lib/btrfs-root/__snapshot), but I can't use rollback ... Might
this be due to boot with systemd? 

Greetings!
 
> -- 
> 
> C Anthony