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refactor: ensure /mnt has free space before running tests in CI#3731

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jarhodes314 merged 1 commit intothin-edge:mainfrom
jarhodes314:fix/workflow-mnt-full
Jul 14, 2025
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refactor: ensure /mnt has free space before running tests in CI#3731
jarhodes314 merged 1 commit intothin-edge:mainfrom
jarhodes314:fix/workflow-mnt-full

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@jarhodes314 jarhodes314 commented Jul 14, 2025

Proposed changes

Make sure that /mnt has some free space before we attempt to write something to it in the unit tests following the changes introduced by #3726. Occasionally this disk is full before we start the run, and this causes the unit tests attempting to write to the disk to fail.

An example of the failure can be seen here, noting that there is no available space on /mnt when we check it at the start of workflow: https://github.com/thin-edge/thin-edge.io/actions/runs/16200614562/job/45738409871.

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  • Bugfix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Improvement (general improvements like code refactoring that doesn't explicitly fix a bug or add any new functionality)
  • Documentation Update (if none of the other choices apply)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)

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@jarhodes314 jarhodes314 temporarily deployed to Test Pull Request July 14, 2025 14:15 — with GitHub Actions Inactive
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reubenmiller commented Jul 14, 2025 •
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@jarhodes314 Do we have an idea what is already existing under /mnt, I'm more think of if this workflow would be to run on a self-hosted runner, then deleting /mnt/ is pretty extreme.

update
Maybe not as extreme as I first thought, but still would be good to know what is under the directory

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jarhodes314 commented Jul 14, 2025

I don't know exactly what's under the directory, but agree this would likely be problematic for a self hosted runner. I think the answer boils down to depending on how GitHub spins up Azure VMs for running actions on and what's run on the runner before, there could be all manner of things in /mnt.

By default, I think all that's in /mnt is a swapfile and a README from the underlying Azure VM telling you not to rely on the data persisting after a reboot of the VM (which doesn't affect us).

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reubenmiller commented Jul 14, 2025 •
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I don't know exactly what's under the directory, but agree this would likely be problematic for a self hosted runner. I think the answer boils down to depending on how GitHub spins up Azure VMs for running actions on and what's run on the runner before, there could be all manner of things in /mnt.

By default, I think all that's in /mnt is a swapfile and a README from the underlying Azure VM telling you not to rely on the data persisting after a reboot of the VM (which doesn't affect us).

Ok, then I guess that should be fine for now, we could potentially add a check against the runner type (to prevent running the command on an unexpected environment)

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github-actions bot commented Jul 14, 2025

Robot Results

✅ Passed ❌ Failed ⏭️ Skipped Total Pass % ⏱️ Duration
654 0 3 654 100 1h49m50.677996999s

@reubenmiller reubenmiller added the ci/cd Repository management and pipeline topics label Jul 14, 2025
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reubenmiller approved these changes Jul 14, 2025
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Approved. The job is already marked to only run on runs-on: ubuntu-22.04, so we should be ok

@jarhodes314 jarhodes314 added this pull request to the merge queue Jul 14, 2025
Merged via the queue into thin-edge:main with commit fc0f092 Jul 14, 2025
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@reubenmiller reubenmiller reubenmiller approved these changes

@Bravo555 Bravo555 Awaiting requested review from Bravo555 Bravo555 is a code owner

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