Re: [PATCH RFC 0/9] [SCSI] Enhanced sense and Unit Attention handling

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On Thu, Jan 24, 2013 at 4:38 AM, Hannes Reinecke <hare@xxxxxxx> wrote:
> As for AEN, does iSCSI _do_ AEN? I thought it got removed ...
>
> If it does, though, it should schedule an event on its own whenever an AER
> is received. The same goes for LLDDs with vendor-specific AENs; thinking of
> megaraid_sas here ...

Let me ask this another way. SAN users expect that the LUN list at the
initiator side gets updated automatically after a SAN configuration
change. How should a SAN system communicate to a SCSI initiator that
the LUN list has been changed ? Some FC SAN systems send a LIP after a
configuration change to force the initiator to rescan LUNs. But how to
inform the initiator about a LUN change for other SCSI protocols ? I'm
not sure that it is even possible to report such a change via sense
data in case a SAN user first removes all LUNs and after that change
adds one or more LUNs.

Bart.
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