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  • HelloRoot@lemy.loltoLinux@programming.devNew to Linux which OS to use?
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    10 days ago

    Linux filesystems exam time:


    section A basics


    1. what does CoW stand for?

    2. evaluate through pros and cons which you personally would pick: Btrfs, ZFS, F2FS, bcachefs, OverlayFS, aufs, Nilfs2, JFFS2, UBIFS


    section B btefs


    1. what exactly happens when running this command, including how qgroups, compression, and recursion interact?
    btrfs balance start -dusage=5 -musage=20 -c zstd \
        --bg /srv/vms && \
    btrfs qgroup limit 50G /srv/vms/guests/win10
    
    1. explain the effect of the following command on device allocation, RAID reshaping, and metadsta distribution:
    btrfs device add -f /dev/nvme2n1 /home && \
    btrfs balance start -mconvert=raid1 -dconvert=raid1 -sconvert=dup /home
    
    1. describe what this snapshotting pipeline does, including send stream structure, parent selection, and how receive-side overwrites are handled:
    btrfs subvolume snapshot -r /opt/app /opt/.snaps/auto-$(date +%s) && \
    btrfs send -c -p /opt/.snaps/last-full \
        /opt/.snaps/auto-$(date +%s) \
        | ssh backup 'btrfs receive -f /backup/opt/incoming'
    
    1. what actions occur on the filesystem when this defrag call is executed, especially regarding extent sharing and how compression interacts?
    btrfs filesystem defrag -r -v -czstd:15 \
        /var/lib/docker/overlay2
    
    1. analyze subvolume management sequence, including how default-subvolume selection influences mount behavior:
    btrfs subvolume delete /mnt/root/@old && \
    btrfs subvolume snapshot -r /mnt/root/@clean /mnt/root/@ && \
    btrfs subvolume set-default 256 /mnt/root
    

    section C zfs


    […]

    /s









  • my 2 old phones were both replaced because of hardware issues.

    one has a broken power button that is constantly randomly spam pressed, so as soon as it gets power if it ever manages to boot it either reboots itself or tries to call emergency services.

    the other has a flaky usb c that constantly connects and disconnects unless you hold it at a specific angle and the battery is like a minute away from meltdown - it can hold charge for a couple minutes.

    I’d be afraid to leave either plugged in.

    I guess the article is for people that buy a new phone yearly out of fashion, not need.


  • arch

    no

    I found it pretty easy to see with thedynamic examples. It flashed “no result” for a second before showing a result for example, happened, especially the first time when searching something after a fresh boot.

    For a static example - what the fuck is this result ordering? What do any of those apps except keepass have to do with “ke”?

    here is another, when I want to start teamspeak, steam is the first result like WTF?

    I find it is absolutely insane and deranged UX that the results where the app name STARTS with the entered substring are not at the top of the list.