I’m a computer and open source enthusiast from Toronto, Ontario, Canada.

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Cake day: July 3rd, 2023

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  • If it is indeed a boneheaded mistake, then it’s probably because of over reliance on RPC-type calls from the front-end that displays the data, to the back-end that actually handles the data. User deletes photo, and the front-end, instead of actually deleting it, tells the backend to do it… and then hides the photo from view, maybe updates its index of photos marking them as “deleted” regardless of whether the backend actually deleted the photo.

    Then an OS update comes along, and rescans the filesystem, and report a bunch of new photos to the front-end, that then happily add them to the GUI to the user’s surprise.

    Modern APIs and software architectures are a bloated, unnecessarily complex mess, and this is the result.


















  • Assuming you were using a Linux software RAID, you should be able to recover it.

    The first step would be to determine what kind of RAID you were using… btrfs, zfs, mdraid/dmraid/lvm… do you know what kind you set up?

    To start the process, try reconnecting your RAID disks to a working Linux machine, then try checking:

    1. The sudo lsblk command will help you get a list of all connected disks, sizes and partitions.
    2. The partition tables on the disks, eg: sudo fdisk -l /dev/sda (that’s a lowercase L and /dev/sda is your disk)
    3. Assuming you use a standard Linux software RAID, try sudo mdadm --examine /dev/sda1. If all goes well, the last command should give you an idea of what state the disk is in, what RAID level you had, etc.
    4. Next, I would try and see if mdadm can figure out how to reassemble the array, so try sudo mdadm --examine --scan. That should hopefully produce output with the name of the RAID array block device (eg, /dev/md0), RAID level and members of the RAID array (number of disks). Let me know what you discover…

    Note: if you used zfs of btrfs, do not do steps 3 and 4; they are MD RAID specific.