What file system should I use for backup with Clonezilla

Hello Garuda users.

So far I have used BTRFS on Garuda on internal extra hard drive of my insatallation, but is it a good idea or should I use ext4 or another file system?

I am aware that I can use snapshot, but I prefer to use both waist belt and braces

System:
  Kernel: 6.1.12-zen1-1-zen arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen
    root=UUID=ff14df11-1857-4590-8e3d-20efe22b14f4 rw [email protected]
    mitigations=off quiet quiet splash rd.udev.log_priority=3
    vt.global_cursor_default=0 loglevel=3 ibt=off
  Desktop: MATE v: 1.26.0 info: mate-panel wm: marco v: 1.26.1 vt: 7
    dm: LightDM v: 1.32.0 Distro: Garuda Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: Gigabyte model: B660M DS3H DDR4 v: x.x
    serial: <superuser required> UEFI: American Megatrends LLC. v: F20
    date: 10/25/2022
CPU:
  Info: model: 12th Gen Intel Core i7-12700 bits: 64 type: MST AMCP
    arch: Alder Lake gen: core 12 level: v3 note: check built: 2021+
    process: Intel 7 (10nm ESF) family: 6 model-id: 0x97 (151) stepping: 2
    microcode: 0x2C
  Topology: cpus: 1x cores: 12 mt: 8 tpc: 2 st: 4 threads: 20 smt: enabled
    cache: L1: 1024 KiB desc: d-4x32 KiB, 8x48 KiB; i-8x32 KiB, 4x64 KiB
    L2: 12 MiB desc: 8x1.2 MiB, 1x2 MiB L3: 25 MiB desc: 1x25 MiB
  Speed (MHz): avg: 2407 high: 4544 min/max: 800/4800:4900:3600 scaling:
    driver: intel_pstate governor: performance cores: 1: 1172 2: 1053 3: 4544
    4: 2100 5: 4525 6: 2100 7: 1274 8: 2100 9: 801 10: 2648 11: 2694 12: 2100
    13: 2100 14: 2100 15: 4500 16: 2100 17: 2100 18: 3599 19: 2100 20: 2448
    bogomips: 84480
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities: <filter>
Graphics:
  Device-1: Intel AlderLake-S GT1 vendor: Gigabyte driver: i915 v: kernel
    ports: active: HDMI-A-3 empty: DP-1, DP-2, DP-3, HDMI-A-1, HDMI-A-2
    bus-ID: 00:02.0 chip-ID: 8086:4680 class-ID: 0300
  Display: x11 server: X.Org v: 21.1.7 compositor: marco v: 1.26.1 driver:
    X: loaded: modesetting alternate: fbdev,intel,vesa dri: iris gpu: i915
    display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93")
  Monitor-1: HDMI-A-3 mapped: HDMI-3 model: ASUS VP248 serial: <filter>
    built: 2019 res: 1920x1080 hz: 60 dpi: 92 gamma: 1.2
    size: 531x299mm (20.91x11.77") diag: 609mm (24") ratio: 16:9 modes:
    max: 1920x1080 min: 720x400
  API: OpenGL v: 4.6 Mesa 22.3.5 renderer: Mesa Intel UHD Graphics 770
    (ADL-S GT1) direct-render: Yes
Audio:
  Device-1: Intel Alder Lake-S HD Audio vendor: Gigabyte driver: snd_hda_intel
    v: kernel alternate: snd_sof_pci_intel_tgl bus-ID: 00:1f.3
    chip-ID: 8086:7ad0 class-ID: 0403
  Sound API: ALSA v: k6.1.12-zen1-1-zen running: yes
  Sound Server-1: PulseAudio v: 16.1 running: no
  Sound Server-2: PipeWire v: 0.3.66 running: yes
Network:
  Device-1: Realtek RTL8125 2.5GbE vendor: Gigabyte driver: r8169 v: kernel
    pcie: gen: 2 speed: 5 GT/s lanes: 1 port: 3000 bus-ID: 03:00.0
    chip-ID: 10ec:8125 class-ID: 0200
  IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:
  Local Storage: total: 2.73 TiB used: 104.74 GiB (3.7%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Kingston model: SNV2S1000G
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: SBJ00101 temp: 30.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Seagate model: ST2000DM008-2UB102
    size: 1.82 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    type: HDD rpm: 7200 serial: <filter> rev: 0001 scheme: GPT
Partition:
  ID-1: / raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
    used: 104.74 GiB (11.2%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 608 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
  ID-3: /home raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
    used: 104.74 GiB (11.2%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-4: /var/log raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
    used: 104.74 GiB (11.2%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
  ID-5: /var/tmp raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
    used: 104.74 GiB (11.2%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
Swap:
  Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default)
  ID-1: swap-1 type: zram size: 125.58 GiB used: 0 KiB (0.0%) priority: 100
    dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 27.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 394 Uptime: 2h 13m wakeups: 0 Memory: 125.58 GiB
  used: 5.16 GiB (4.1%) Init: systemd v: 253 default: graphical
  tool: systemctl Compilers: gcc: 12.2.1 clang: 15.0.7 Packages: pm: pacman
  pkgs: 1729 libs: 389 tools: octopi,pamac,paru Shell: Bash v: 5.1.16
  running-in: terminator inxi: 3.3.25
Garuda (2.6.15-1):
  System install date:     2023-01-31
  Last full system update: 2023-02-22
  Is partially upgraded:   No
  Relevant software:       snapper NetworkManager mkinitcpio
  Windows dual boot:       No/Undetected

If you are cloning a disk or partition with Clonezilla, I don't think you have much choice on the filesystem. :face_with_monocle:

Making backups in addition to the snapshots is a good instinct, and using ext4 for the backup filesystem is fine if you want to introduce some filesystem diversity. Good old rsync works well for this, or a tool like Borg is reliable and well-liked in the community. Vorta gives Borg an easy-to-use GUI which is worthy of consideration: https://vorta.borgbase.com

Another consideration is backing up your snapshots to an external drive with Btrfs send/receive, or a tool like https://github.com/digint/btrbk.

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