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How do you mount a Btrfs subvolume?
You can actually mount a subvolume in basically the same way that you have always mounted entire fillesystems, all you have to do is add “-o subvol=name” or “-o subvolid=ID” to the mount command or /etc/fstab. When you do this, the directory associated with the subvolume will be the top level of the mounted filesystem.
How do I install Btrfs Arch?
Approach 1 [UEFI, GPT and GRUB]
- Partitioning. This is the selected layout for the UEFI/GPT system:
- BTRFS layout. The only partition formated with BTRFS was /dev/sda3, which contains the whole root system.
- Installing Arch Linux.
- Fstab.
- Mkinitcpio.
- Microcode.
- Bootloader.
- Additional packages installed.
Where do I mount a subvolume in Btrfs?
However, with BTRFS it’s possible to mount a subvolume, with filesystem options, providing the ability to use a subvolume like a partition. The resulting subvolume will be mounted at /var/lib/machines.
Where do I add Btrfs file to fstab?
So, I’ve two devices /dev/sda and /dev/sdb. You can use any one of the device to mount btrfs. Save and close the file. There you have it, an entry is added to /etc/fstab so the new disk will be mounted automatically at system startup.
How to mount a Btrfs device to a disk?
The syntax is as follows to mount btrfs device using UUID at /data/ mount point: UUID=e5b5c118-fb56-4fad-a45d-ff5fad9a649d /data btrfs defaults 0 0 Save and close the file. There you have it, an entry is added to /etc/fstab so the new disk will be mounted automatically at system startup.
How are subvolumes allocated in a Btrfs pool?
This is an ingenious construct that lets us easily create and manage a Btrfs storage pool all full of subvolumes that we can mount and unmount independently like block devices, but without hassling with disk partitioning. Subvolumes don’t have a fixed size, but are allocated space dynamically from the storage pool as data are added and removed.