Use overlayfs on system that supports it for cached runner #29
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Signed-off-by: Gabriel Adrian Samfira <[email protected]>
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This change allows providers to use overlayfs for the cached runner, with a fallback to the old way of copying everything.
The writable upper dir is customizable via extra specs by setting the
extra_context["OVF_DIR"]value to a different location on disk.Example:
garm-cli pool update 84944b12-5f80-469c-9152-4e352ea570f8 --extra-specs='{"extra_context": {"OFS_DIR": "/home/runner/overlay-work"}}'If your runner has a volume attached that you'd rather use for the overlay data, or just because you prefer a different location on disk, this option should give you the desired result. If not set, it falls back to
/opt/workThis should speed up runner installation considerably.
Providers will have to be updated and the extra_context extra spec to be added to the allowed extra specs of the provider before this works.