void-linux / void-linux/void-runit

03-filesystems.sh: too emergency_shell prone?

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C
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Merged PRs (30d)
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Description

In particular I was bitten by

[ -x /bin/btrfs ] && btrfs device scan || emergency_shell

Since I don't use it I had blacklisted the btrfs module, causing btrfs device scan to fail.


It's very unfortunate when emergency_shell is triggered without a real cause, since my headless maching gets stuck until I can go to school to fix it (i.e. type "exit" at the shell).

I should point out that this particular server I switched from debian to void when I got fed up with systemd-mount doing exactly that thing... (blocking the boot).

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading 03-filesystems.sh, especially the btrfs device scan and emergency_shell command. Reproduce or trace the behavior with btrfs unavailable or its module blacklisted, then determine which scan failures should be fatal. Done means the filesystem script no longer blocks a headless boot for an optional btrfs scan failure, while genuine filesystem problems still receive appropriate handling.

Written by the indexing model from the issue text.

Assessment

Tech stack
shell
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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