fix: re-apply #360 with fix for recursive backup directory accumulation #369
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Why? ==== In the implementation of jdx#360, users on self-hosted runners reported that mise-bin-backup-* directories were nesting recursively inside the bin/ folder, causing exponential disk growth (75GB in 20 hours). The bug was in withBinaryBackup(): when using io.cp() to restore the backup directory to an existing destination, it copies the source INTO the destination rather than replacing it. This created nested directories that got backed up on subsequent runs, compounding the problem. See: jdx#363 How? ==== - Applied fix from PR jdx#366: backup only the mise binary file itself, not the entire bin/ directory. This avoids the io.cp directory behavior entirely. - Renamed backup prefix to mise-binary-backup-* to distinguish from old contaminated backups. - Added test workflow that verifies no nested backup directories appear after multiple cache restore cycles. - Tested with act to confirm fix prevents accumulation. ---- Fixes jdx#363 Related to jdx#360 Reverted in jdx#364 Co-authored-by: Florian Fittschen <ffittschen@gmail.com>
Contributor
Author
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Hi @jdx is this something you're interested in merging? |
Owner
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not sure right now |
Contributor
Author
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np, I'll leave it for now. I'm running with this fork to address my issue so it's not time-sensitive. |
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Summary
This PR re-applies #360 (monorepo cache isolation) and fixes the bug that
caused it to be reverted in #364.
Why?
In the implementation of #360, users on self-hosted runners reported that
mise-bin-backup-*directories were nesting recursively inside thebin/folder, causing exponential disk growth (75GB in 20 hours).
The bug was in
withBinaryBackup(): when usingio.cp()to restore thebackup directory to an existing destination, it copies the source INTO the
destination rather than replacing it. This created nested directories that
got backed up on subsequent runs, compounding the problem.
See: #363
How?
entire
bin/directory. This avoids theio.cpdirectory behavior entirely.mise-binary-backup-*to distinguish from oldcontaminated backups.
bin/contains only the mise binary after multiplecache restore cycles.
Fixes #363
Related to #360
Previously Reverted in #364
Co-authored-by: Florian Fittschen ffittschen@gmail.com