Re: systemd.setenv and a mount.unit

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On 2014-11-20 11:35, Jakob Schürz wrote:
> Am 2014-11-20 um 11:17 schrieb Goffredo Baroncelli:
[....]
>> 
>> rootflags=subvol=debian
>> 
>> so, the subvol=debian option is passed to mount. When
>> grub-mkconfig generates the grub menu entries, does so.
> 
> This I also have in my grub-config, and it works. But it doesn't
> solve the challenge. Mounting more subvolumes according to the
> root-subvolume... :-)
> 

Ah! You never told that this is your request.

I can only suggest that after snapshooting the "/",
you snapshot their subvolumes, placing these under
the root snapshoot itself:

Supposing to have the following four subvolumes

/root/
/root/etc
/root/usr
/root/var

When you need to snapshot, you should:

# btrfs subvolume snapshot /root /backup-root-20141120
# btrfs subvolume snapshot /root/etc /backup-root-20141120/etc
# btrfs subvolume snapshot /root/usr /backup-root-20141120/usr
# btrfs subvolume snapshot /root/var /backup-root-20141120/var

So in order to remount an "old" filesystem, you need to make only
1 mount.










> regards Jakob
> 
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