What is the difference between ReadSector0 and TUR path checkers with device-mapper-multipath on Red Hat Enterprise Linux?
Issue
Do you have doc explaining the difference between ReadSector0 and Tur ?
Environment
- Red Hat Enterprise Linux (all varieties)
- device-mapper-multipath to manage SAN storage.
- Option to use either readsector0 or TUR (Test-Unit-Ready) path checkers.
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