Alert rule: CephPGNotDeepScrubbed
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One or more PGs haven’t been deep scrubbed recently. Deep scrub is a data integrity feature, protecting against bit-rot. It compares the contents of objects and their replicas for inconsistency. When PGs miss their deep scrub window, it may indicate that the window is too small or PGs weren’t in a 'clean' state during the deep-scrub window.