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Status Under review
Workspace AIX
Created by Guest
Created on Nov 10, 2022

RELATED IDEAS

Maintain paths returning PQ=1 in Failed status after reboot

At the moment when a LUN inquiry returns Peripheral Qualifier (PQ)=1, the path to the LUN is considered in Failed status. In the event of a LUN path temporarily changing to Unavailable (ASC/ASCQ 0x04/0x0C ) and therefore setting PQ=1, that situation would affect to a number of paths.

If that state changes, the change can be notified to the initiator via UA to a healthcheck operation if using TUR or in the inquiry response itself.

But if that state persists and the AIX system reboots in that period, those paths would transition to Missing state. If at that point the state of the path changes and given that no healthcheck would traverse a Missing path without intervention, the path will require manual intervention to recover.

This behaviour transform a temporary state into a persistent state arbitrarily just by the reboot. We would consider the treatment should be the same and the path in should have the same status (Failed) in both situations, so the OS would recover the path if there is a change in state irrespective of a reboot occurring in the interval. (subject to hcheck_mode)

Idea priority Medium

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