Having the checker check for this change isn't a solution...it
shouldn't prevent any data corruption. Even if you check prior to
every IO, you still have an obvious race between the check and the
subsequent IO. You gain the ability to recognise the problem and
somehow magically warn the user (eg:
Simply pulling two FC cables from a host and re-cabling incorrectly
(think a switch of two HBA cables) or a surprise reconfiguration of a
storage system target could lead to a situation where the potential for
data corruption is ripe. While it may not be reasonably possible to
prevent data corrupt
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