[LU-7149] Test framework doesn't cleanup so test always passed when executed consecutively

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.9.0
• Affects Version/s: Lustre 2.5.3
• Labels: patch tests
• Severity: 3
• Assignee: James Nunez (Inactive)
• Reporter: Artem Blagodarenko (Inactive)

Description

Test 224c sanity.sh always passed when executed consecutively. Even when executed without fix and expected to be failed.

But test_224c fails as expected with timeout if run ONLY=224c sh sanity.sh on fresh created lustre.

The problem is that some tests set off writethrough, using "set_cache writethrough off" and don't restore it before 224c, that needs writethrough to be set on.