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  • 30 Comments
Joined 10 months ago
Cake day: September 5th, 2025
  • antsu@discuss.tchncs.detoLinux@lemmy.ml•Seeking guidance on BTRFS RAID
    3·
    4 months ago

    Briefly addressing the RAID types you mentioned:

    • RAID-0: OH NO OH GOD PLEASE NO AHHHHHHH
    • RAID-1: There’s nothing wrong with it, but it feels very weird to me that BTRFS can do RAID-1 over 3 disks. It’s still technically 2 copies of every block, meaning you can in theory lose any single drive and still recover the data, but idk, it just feels wrong.
    • RAID-10: Again, weird that BTRFS allows this with an odd amount of disks. From what I can find, this has no advantage over RAID-1 with 3 disks and can in fact perform worse.
    • RAID-5: It’s probably fine if you have backups, and you get the most usable space out of your disks, but performance will take a hit, and scrubs are terribly slow.

    Now, you mentioned not wanting ZFS due to complexity, but really, it is no more complex to manage than BTRFS. It’s fairly easy to get it working on any modern Linux distro (Ubuntu has support out-of-the-box, Debian has it packaged as a DKMS module, Arch has it in AUR, and so on).

    With ZFS, you could create a RAID-Z1 (equivalent to a RAID-5) without any of the performance penalties or risks that BTRFS RAID-5 has. Both have pretty much them same features, with the main difference that ZFS can’t be “re-balanced” to a different disk layout like BTRFS can, but it will also generally not corrupt your data if you look at it wrong. Everything else maps pretty much 1:1 between them. Both support:

    • Transparent compression
    • Transparent checksums
    • Scrubbing
    • Snapshots
    • Block-level transfers (btrfs-send / zfs-send)
    • Fairly intuitive CLI
    • Filesystem (BTRFS) == Pool (ZFS)
    • Subvolume (BTRFS) == Dataset (ZFS)
  • antsu@discuss.tchncs.detoSelfhosted@lemmy.world•[Ubuntu] [Docker] Need help with Nvidia hardware acceleration in JellyfinEnglish
    7·
    4 months ago

    I had the same problem: Debian host + official Jellyfin Docker image, all set up according to the official guide, but it would fail to transcode anything.

    There was no relevant information about what was wrong in the logs so what I did was:

    • Copy the ffmpeg command from the logs.
    • docker exec -it into the Jellyfin container.
    • run the same ffmpeg command manually so I could see the error directly.

    Long story short, because the Nvidia toolkit uses the driver/libraries from the host, the error was that I was missing the library libnvidia-encode1 on the host. After installing that, everything works as it should.

  • antsu@discuss.tchncs.detoSelfhosted@lemmy.world•Unifi Protect - Wife Approval Factor? +HA integrationEnglish
    14·
    4 months ago

    No idea how it compares to Ring, but my wife is a severe technophobe and she had no issues or complaints with Protect. We only have one doorbell + one camera connected to a CloudKey+ though, so your mileage may vary.

    Motion detection works reasonably well as far as I can tell, with person, vehicle and animal detection too.

    Regarding the doorbell, one option you have is to try finding a second-hand Unifi G4 Doorbell (non-pro). It can be wired with only the two wires you already have. Just make sure you have relatively good 5GHz WiFi reception near your front door, because the 2.4GHz antennas on this model are notably bad.