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$ snap install hello-world
error: cannot perform the following tasks:
- Mount snap "core" (1689) ([start snap-core-1689.mount] failed with exit status 1: Job for snap-core-1689.mount failed. See "systemctl status snap-core-1689.mount" and "journalctl -xe" for details.)

Appears to be an issue with squashfs, I have run a test with squashfs to verify that it does not work in my tmp directory for loading a *.squash file with squashfs-tools. I'm running Ubuntu 16.04 and unsure how to enable support for squashfs or if it is possible. I'm running this on a dedicated server.

snap-core-1689.mount - Mount unit for core
   Loaded: loaded (/etc/systemd/system/snap-core-1689.mount; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-06-14 12:13:03 EDT; 2min 17s ago
    Where: /snap/core/1689
     What: /var/lib/snapd/snaps/core_1689.snap
  Process: 6092 ExecMount=/bin/mount /var/lib/snapd/snaps/core_1689.snap /snap/core/1689 -t squashfs -o nodev,ro (code=exited, status=32)

Jun 14 12:13:03 hostname systemd[1]: Mounting Mount unit for core...
Jun 14 12:13:03 hostname mount[6092]: mount: unknown filesystem type 'squashfs'
Jun 14 12:13:03 hostname systemd[1]: snap-core-1689.mount: Mount process exited, code=exited status=32
Jun 14 12:13:03 hostname systemd[1]: Failed to mount Mount unit for core.
Jun 14 12:13:03 hostname systemd[1]: snap-core-1689.mount: Unit entered failed state.
  • 1
    Who is your host? We've run into a few situations where hosts claim they provide Ubuntu 16.04 but then use a custom kernel. – Kyle Jun 14 '17 at 16:52
  • @Kyle I'm using Kimsufi, I can see that in the advanced server install options there is an option to use the distribution kernel. This appears to be the problem. – gopher Jun 14 '17 at 16:57
  • 1
    Yep, that'll do it. Super frustrating, I'm sorry! – Kyle Jun 14 '17 at 17:19
  • I'm on OVH and same thing seems to be happening, anyway I can check if I'm running a custom kernel? – Antoine Apr 12 '18 at 23:06
4

My dedicated server host was using a custom kernel which was the cause of this issue. Beware of hosting providers not installing the distribution kernel when they appear to do so.

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