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kaki

@ kaki @sh.itjust.works

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3 yr. ago

Visionary disruptor igniting paradigmatic shifts through AI-powered, omnichannel innovation that fuels exponential scalability & maximum impact.

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  • Seeking guidance on BTRFS RAID

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  • I setup BTRFS RAID1 on my NAS recently, here's what I gathered on BTRFS RAID levels:

    • RAID1 vs RAID10:
      • RAID10 theoretically offers better performance (stripping), but the BTRFS implementation isn't well optimized so you don't get that much of a performance boost compared to RAID1.
      • RAID1 may also waste less disk space when using disks of different sizes compared to RAID10, here's a simulator to check: https://www.carfax.org.uk/btrfs-usage/ . In your case it doesn't matter since all your disks are the same size.
    • RAID5/6:
      • It's not only the write-hole, scrubbing is also broken (huge read amplification make performance unusable on large file systems).
      • RAID5/6 is slower than everything else (not a BTRFS problem, it's just parity calculations).
      • I believe the BTRFS developers are getting (relatively) closer to fixing RAID5/6 these days, but they still don't recommend using it. Switching between BTRFS RAID modes can be done pretty easily later without creating a new filesystem, so you could always switch to it later once it's fixed.

    In your case, I'd probably use RAID1 or RAID10 for data, and RAID1c3 for metadata.

    EDIT: just saw that you don't care that much about losing the data. In that case you don't need any fancy RAID thing, as someone else said just add all your disks in single mode (the default), way simpler and you don't lose any disk space.

  • We're experiencing a flood of new subscriptions - many of them default via topics, I understand that - but all the same: New users - what are some of your favourite TV series?

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  • Yes, they wanted to make a third season. That said, it didn't end on a cliffhanger, and the ending wraps up the main plot points in a way that I found satisfying enough.

  • We're experiencing a flood of new subscriptions - many of them default via topics, I understand that - but all the same: New users - what are some of your favourite TV series?

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  • Patriot is one of the few shows I've bothered rewatching. Still great.

  • Locked

    Family Email w/ Custom Domain

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  • ANTI PEE PAINT

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  • Most of these are not free, according to your second link.

  • What is the supposed workflow for vanilla Gnome for keyboard users?

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  • There's hotkeys for workspace navigation, I use them all the time: Super+Alt+Left/Right will navigate to the next/previous workspace (Super+PageDown/Up also works). If you go in Settings -> Keyboard shortcuts -> Navigation you'll find more, notably to move windows between workspaces.

    As for the fullscreen by default, there's extensions for that I guess, though personally it doesn't bother me since after the window is maximized once it should restore its maximized state the next time it's opened. With Super+Arrow keys to position the window, I personally barely use the mouse for window management.

  • TIL the UK built a working hovertrain prototype in the 1970s and then abandoned it

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  • They allowed for >250km/h speeds. They were basically competing technology and were developed at the same time as modern high speed rail (and lost).

  • What is your most useful Linux app which others might not know about (please don't just give the name but a link and why it is good for you) ?

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  • Qalculate!, the calculator I use every time I need to do a calculation, especially if it involves units or currency conversion. Does everything I've ever needed out of an everyday calculator (even symbolic calculation and exact results), while keeping the usual simple calculator interface.

  • Why are American cops allowed to be morbidly obese?

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  • The only group that can't unionize is the military, there's plenty of police unions in France.

  • [Question] Why does a Docker container have access to a directory on my system not explicitly mounted as volume?

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  • The Nextcloud AIO container itself doesn't have access to the backup directory, but it has access to the docker socket (/var/run/docker.sock). Having access to the docker socket means it can perform any docker operation on the host system, in this case starting a separate backup container with the backup directory mounted.

  • Qu'est-ce que ça veut dire, cette phrase : «J’ai pu l’cœur à la fête»

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  • Should i host LinguaCafe or are there better alternatives?

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  • I'm aware of LWT and LUTE with the same concept. Neither comes with predefined languages or texts, so they should work for any language as long as you have some texts you want to read.