[jlapenna]

A cooling-device attribute returning ENODATA currently fails the whole thermal collection. Add errors.Is(err, syscall.ENODATA) to the shared sysfs canIgnoreError policy so callers can skip unavailable entries. Other I/O and parse errors still propagate.

The maintainer follow-up removes the parser-function indirection from cooling-device collection and restores its direct parser call. Regression cases exercise the shared predicate with direct, os.PathError and further wrapped ENODATA, plus EIO, parse and existing ignorable errors. The original cooling-device fixture remains.

Validation at exact 510cc3de5d5de8cba90d697a10f21635dc73bb10: the old shared predicate fails all three ENODATA cases; corrected focused tests and normal make test (go test -race -p=1 ./...) pass in all 13 test-bearing packages. Affected-package make lint pkgs=./sysfs reports zero issues; make style, make check_license, fixture setup and unchanged fixtures.ttar checks pass. Normal signed-off commit and forward push completed. Current upstream CI and maintainer review remain separate gates.

Related: jlapenna/homelab#2631. This change does not deploy a node-exporter package.

[jlapenna]

@SuperQ both review points are addressed in 510cc3d:

• ENODATA is now handled in the shared canIgnoreError() policy, as you suggested.
• The test-only parser indirection is gone; cooling-device collection calls its parser directly again.

Both threads are resolved. Could you take another look when you have a moment?

[SuperQ]

Thanks!