1 marek 1.1 // Copyright (c) 2008 DMTF.  All rights reserved.
  2              [Association, Version ( "2.19.0" ), 
  3               ClassConstraint { "inv: self.Dependent.IsComposite = true" }, 
  4               UMLPackagePath ( "CIM::Device::StorageExtents" ), 
  5               Description ( 
  6                  "This specialization defines how data is striped across "
  7                  "StorageExtents. Additionally, it includes information on "
  8                  "distribution of check data so that the \'usual case\' RAID "
  9                  "devices can be created in one step." )]
 10           class CIM_CompositeExtentBasedOn : CIM_BasedOn {
 11           
 12                 [Override ( "Antecedent" ), 
 13                  Min ( 1 ), 
 14                  Description ( "The underlying StorageExtent." )]
 15              CIM_StorageExtent REF Antecedent;
 16           
 17                 [Override ( "Dependent" ), 
 18                  Description ( 
 19                     "The StorageExtent which is built on the StorageExtent." )]
 20              CIM_StorageExtent REF Dependent;
 21           
 22 marek 1.1       [Required, Override ( "OrderIndex" ), 
 23                  Description ( 
 24                     "Order matters to composite extents. An example of the "
 25                     "use of this property is when defining a RAID-0 striped "
 26                     "array of 3 disks. The resultant RAID array is a "
 27                     "composite extent that is dependent on (as described by "
 28                     "CompositeExtentBasedOn) the StorageExtents that "
 29                     "represent each of the 3 disks. The OrderIndex of each "
 30                     "CompositeExtentBasedOn association from the disk Extents "
 31                     "to the RAID array could be specified as 1, 2 and 3 to "
 32                     "indicate the order in which the disk Extents are used to "
 33                     "access the RAID data." ), 
 34                  MappingStrings { "MIF.DMTF|Protected Space Extent|001.1" }]
 35              uint16 OrderIndex;
 36           
 37                 [Description ( 
 38                     "True if logical blocks in the underlying StorageExtents "
 39                     "are mapped in decrementing order. This property "
 40                     "corresponds to the INCDEC value in the SCSI SCC-2 Volume "
 41                     "Set PS_Extent Descriptor." )]
 42              boolean LBAsMappedByDecrementing;
 43 marek 1.1 
 44                 [Description ( 
 45                     "True if the logical block mapping algorithm includes "
 46                     "check data bytes. This property corresponds to the "
 47                     "NOCHKSKIP attribute in the SCC-2 Volume Set PS_Extent "
 48                     "Descriptor." )]
 49              boolean LBAMappingIncludesCheckData;
 50           
 51                 [Description ( 
 52                     "The total number of blocks that will be consumed on the "
 53                     "Dependent Extent. This is limited by the Antecedent\'s "
 54                     "NumberOfBlocks, but is included explicitly to provide "
 55                     "for the DMTF MIF mapping. In SCSI SCC, this is "
 56                     "equivalent to the NUMBER OF LBA_PS(s) field in the "
 57                     "Volume Set PS_Extent Descriptor." ), 
 58                  MappingStrings { "MIF.DMTF|Protected Space Extent|001.3" }, 
 59                  ModelCorrespondence { "CIM_StorageExtent.NumberOfBlocks" }]
 60              uint64 NumberOfBlocks;
 61           
 62                 [Description ( 
 63                     "The Dependent\'s BlockSize is limited by the "
 64 marek 1.1           "Antecedent\'s. In SCSI SCC, this is equivalent to the "
 65                     "NUMBER OF BYTES PER LBA_PS field in the RedundancyGroup "
 66                     "P_Extent Descriptor." ), 
 67                  Units ( "Bytes" ), 
 68                  MappingStrings { "MIF.DMTF|Protected Space Extent|001.4" }, 
 69                  ModelCorrespondence { "CIM_StorageExtent.BlockSize" }, 
 70                  PUnit ( "byte" )]
 71              uint64 BlockSize;
 72           
 73                 [Description ( 
 74                     "Number of bytes which form the stripe size for the "
 75                     "Dependent StorageExtent. If the CompositeExtent is "
 76                     "concatenated instead of striped, then "
 77                     "UserDataStripeDepth should be set to zero." ), 
 78                  Units ( "Bytes" ), 
 79                  MappingStrings { "MIF.DMTF|Protected Space Extent|001.6" }, 
 80                  PUnit ( "byte" )]
 81              uint64 UserDataStripeDepth;
 82           
 83                 [Description ( 
 84                     "Number of bytes of user data to skip before starting the "
 85 marek 1.1           "check data interleave." ), 
 86                  Units ( "Bytes" ), 
 87                  MappingStrings { "MIF.DMTF|Physical Extent|001.6" }, 
 88                  PUnit ( "byte" )]
 89              uint64 UnitsBeforeCheckDataInterleave;
 90           
 91                 [Description ( 
 92                     "Number of bytes to be reserved for check data." ), 
 93                  Units ( "Bytes" ), 
 94                  MappingStrings { "MIF.DMTF|Physical Extent|001.7" }, 
 95                  PUnit ( "byte" )]
 96              uint64 UnitsOfCheckData;
 97           
 98                 [Description ( "Number of bytes to be reserved for user data." ), 
 99                  Units ( "Bytes" ), 
100                  MappingStrings { "MIF.DMTF|Physical Extent|001.8" }, 
101                  PUnit ( "byte" )]
102              uint64 UnitsOfUserData;
103           
104           
105           };