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    iSCSI - Recovery Levels



    There seems to be consensus around the fact the recovery leves are good and
    no
    clear consensus about hpow many should there be (2 or 3).
    
    As there is no chance to settle this until 08 gets out I suggest
    intrdocucing
    a generic key=value pair (RecoveryLevel) and remove the existing keys
    (CommmandFailoverSupport and CommandReplaySupport).
    
    RecoveryLevel will be defined as follows:
    
    01   RecoveryLevel
    
       Use: LO
       Who can send: Initiator and Target
    
       RecoveryLevel=<0 to x>
    
       Default is 0.
    
       Initiator and target negotiate the recovery level supported.
       The minimum of the two values is selected.
    
       Recovery levels represent a combination of recovery capabilities.
       Each recovery level includes all the capabilities of the lower recovery
       levels and adds to them some new ones.
    
       In the recovery mechanisms descriptions some specific recovery
       capabilities are used.
    
       Those are mapped to levels as follows:
    
          0 - SessionRecovery
          1 - CommandFailoverSupport and CommandReplaySupport
          [TBD]
    
    
    
    
     Comments?
    
     Julo
    
    


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Last updated: Tue Sep 04 01:03:48 2001
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