2backup (btrfs backup), a simple snapshots management and backup tool for btrfs

Note

⚠️ The project is actually in active developpement, so things can change dramatically! If you test it now, I'm not responsible of anything that can go wrong on your computer!

Goal

The goal is to provide a simple - yet powerfull - snapshots management tool. It can create them periodically or manually, with description and metadata. Delete them automatically when they expire. Backup them to an external drive for backing-up data, because snapshots are not backups.

Installation

Clone the repository and get inside it

git clone https://github.com/Babilinx/2backup && cd 2backup

Install it with make

sudo make install

What's working?

• Profiles creation, suppression, listing and showing details
• Snapshots creation
• Snapshots suppresion (only profile one)
• Specific snapshot deletion
• Snapshots listing
• Show snapshot infos
• Snapshot mounting/unmonting
• Rollback an entire profile
• Rollback a specific snapshot

Usage

Note: you can use 2backup command as well as bb for faster use.

All commands needs root rights (except some but it's better with root anyways)

Initialisation

For every subvolume that you want to backup, you will need to have a .snapshots subvolume at is root (mounted or nested). When that's done, you can continue with the profiles section.

Profiles

Profiles are specific for one (or more) subvolume(s). They contains rules about auto-snapshoting and auto-deletion.

Exemple

"system" profile:

#/etc/2backup/profiles/system

# Affects only @, @var, @root and @boot subvolumes
SUBV=("@" "@var" "@boot" "@root")
# Mount points of each subvolume
SUBV_MNTPT=("/" "/var" "/boot" "/root")

TIMELINE_LIMIT_HOURLY="5"   # Keep 5 hourly snapshots
TIMELINE_LIMIT_DAILY="7"    # Keep 7 daily snapshots
TIMELINE_LIMIT_WEEKLY="0"   # Do not make/keep weekly snapshots
TIMELINE_LIMIT_MONTHLY="0"  # Do not make/keep mounthly snapshots
TIMELINE_LIMIT_YEARLY="0"   # Do not make/keep yearly snapshots

Profile creation

Create it

2backup profile create <profile>

And edit the settings

sudoedit /etc/2backup/profiles/<profile>

Note: sudoedit is a tool to edit files as root without doing sudo <editor> <file>. You can use any editor as root instead.

Profile deletion

Just delete it

2backup profile delete <profile>

And say "y" (or "n" if you want to keep it)

Profile list

List them

2backup profile list

Get infos on one specific profile

Get the infos

2backup profile show <profile>

Snapshots

Creating a manual snapshot

Note: They are never deleted automaticaly

Short description

Create it

2backup snapshot create <profile> -m <description>

Long description

Create it

2backup snapshot create <profile>

And enter the description with your file editor

Deleting a snapshot

Note: It can contain more than one snapshot!

List snapshots

2backup snapshot list -p <profile>

And delete it

2backup snapshot delete <snapshot ID> -p <profile>

Deleting a single snapshot

Get his hash

2backup snapshot list

And delete it

2backup snapshot delete <snapshot hash>

List all snapshots

List them

2backup snapshot list

List all snapshots of a specific profile

List them

2backup snapshot list -p <profile>

Access the content of a snapshot

Mount it

2backup snapshot mount <snapshot hash>

Access it

Unmount it

2backup snapshot umount <snapshot ID | snapshot hash>

Rollback

Rollback an entire profile to a previous snapshot

2backup rollback <snapshot ID> -p <profile>

Rollback only one snapshot

2backup rollback <snapshot hash>

Updating

Go inside 2backup repository, and execute

make update

Re-install it if there is any updates

sudo make install

Removing

Go inside 2backup repository, and execute

sudo make uninstall

Get out the repo and delete it

cd .. && rm -rf 2backup/

Help page

2backup  Copyright (C) 2023  Babilinx
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; see 'https://www.gnu.org/licenses/gpl-3.0.en.html' for details.

Usage:
  2backup [options] [arguments]
  bb [options] [arguments]

Options:
  profile                                      Interact with profiles.
    arguments:
      create <profile>                         Create a profile.
      delete <profile>                         Delete a profile.
      list                                     List all profiles.
      show <profile>                           Show infos of a profile.

  snapshot                                     Interact with snapshots.
    arguments:
      create <profile>                         Create a snapshot of a profile, with the description given after.
      create <profile> -m <description>        Create a snapshot of a profile with the giver description.
      delete <snapshot ID> -p <profile>        Delete a profile's snapshot (can contain more than one snapshot).
      delete <snapshot hash>                   Delete a given snapshot.
      list                                     List all snapshots.
      list -p <profile>                        List all snapshots of a profile.
      show <snapshot hash>                     Show infos on a snapshot.
      show <snapshot ID> -p <profile>          Show infos on a snapshot of a profile.
      mount <snapshot ID> -p <profile>         Mount a snapshot of a profile.
      mount <snapshot hash>                    Mount a given snapshot.
      umount <snapshot ID> -p <profile>        Unmount a snapshot of a profile.
      umount <snapshot hash>                   Unmount a given snapshot.

  rollback                                     Do rollback stuff.
    arguments:
      <snapshot hash>                          Rollback the given snapshot.
      <snapshot ID> -p <profile>               Rollback a profile to the given snapshot.