os-brick

  1. Bug #2004555
  2. Comment #46

Comment 46 for bug 2004555

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Sean McGinnis (sean-mcginnis) wrote : Re: [ussuri] Wrong volume attachment - volumes overlapping when connected through iscsi on host

> I can't reproduce the issue using FC with an HPE 3PAR array, debugging it I found that the compute node receives a signal after the LUN has been remapped

This makes sense. On fibre channel fabrics, any time a LUN is added or removed an RSCN (https://en.wikipedia.org/wiki/Registered_state_change_notification) is sent out. That should signal to the HBA that it needs to recheck what it has access to, where in this case it will realize that the device it used to have access to is no longer present and trigger the cleanup of the device.

So in this case we are somewhat protected by the storage protocol itself.