Comment on Mozilla’s new service tries to wipe your data off the web

sudo umount /var/snap/Firefox/common/host-hunspell 2>/dev/null

Sudo snap disconnect Firefox:host-hunspell 2>/dev/null

• murderisbad@lemm.ee ⁨7⁩ ⁨months⁩ ago

  You are misinterpreting the information here. Neither Firefox nor Ubuntu are doing anything to your root directory. The behavior described and what you are undoing is that your storage device is being made available at two locations: both at / and at the hunspell path.

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  • foggy@lemmy.world ⁨7⁩ ⁨months⁩ ago

    lsblk outputs that my NVMe0n1p1 is mounted at /var/snap/Firefox/common/host-hunspell.

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    • patatahooligan@lemmy.world ⁨7⁩ ⁨months⁩ ago

      lsblk is just lacking a lot of information and creating a false impression of what is happening. I did a bind mount to try it out.

      sudo mount -o ro --bind /var/log /mnt
      

      This mounts /var/log to /mnt without making any other changes. My root partition is still mounted at / and fully functional. However, all that lsblk shows under MOUNTPOINTS is /mnt. There is no indication that it’s just /var/log that is mounted and not the entire root partition. There is also no mention at all of /. findmnt shows this correctly. Omitting all irrelevant info, I get:

      TARGET                                                SOURCE                 [...]
      /                                                     /dev/dm-0              [...]
      [...]
      └─/mnt                                                /dev/dm-0[/var/log]    [...]
      

      Here you can see that the same device is used for both mountpoints and that it’s just /var/log that is mounted at /mnt.

      Snap is probably doing something similar. It is mounting a specific directory into the directory of the firefox snap. It is not using your entire root partition and it’s not doing something that would break the / mountpoint. This by itself should cause no issues at all. You can see in the issue you linked as well that the fix to their boot issue was something completely irrelevant.

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