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<< Arrangement of Extents | Recording of a volume Partition >>
<< Arrangement of Extents | Recording of a volume Partition >>

Non-interleaved mode

- 6 -
6.4.3.6 Data
Space
The set of File Units in which the successive parts of the File Section are recorded shall be the Data Space of
the File Section.
The bytes in the Data Space shall be numbered consecutively. The numbering shall start from 1 which shall
be assigned to the first byte of the first Logical Block of the first File Unit, if any, of the Data Space. The
numbering shall continue through successive bytes of that Logical Block, then through successive bytes of
each successive Logical Block, if any, of the first File Unit, and then through successive bytes of the Logical
Block(s) of each successive File Unit, if any, assigned to the File Section.
The numbering shall end with a number equal to the number of bytes in which the File Section is recorded in
the Data Space; or this number shall equal zero if there are no bytes of the file recorded in the Data Space.
6.4.4 Non-interleaved
mode
When a File Section is recorded in non-interleaved mode, the File Section, and its associated Extended Attribute
Record, if any, shall be recorded over the sequence of Logical Blocks in an Extent.
6.4.4.1
Recording of an Extended Attribute Record
If an Extended Attribute Record is recorded, it shall be recorded over one or more Logical Blocks, the
Logical Block Numbers of which form a continuous ascending sequence. The recording shall begin at the
first byte of the first Logical Block of the Extent. It shall continue through successive bytes of that Logical
Block, and then through successive bytes of successive Logical Blocks, if any, of the Extent, until all of the
Extended Attribute Record is recorded.
The number of Logical Blocks over which the Extended Attribute Record is recorded shall be the assigned
Extended Attribute Record length for the File Section.
NOTE 6
The Logical Blocks comprising an Extended Attribute Record assigned to a File Section may
- also each be assigned to a different File Section, and/or
- comprise part of one or more Volume Partitions.
6.4.4.2
Recording of a File Section
The File Section shall be recorded over zero or more Logical Blocks, the Logical Block Numbers of which
form a continuous ascending sequence. If no Extended Attribute Record is recorded, the sequence shall start
with the first Logical Block of the Extent. If an Extended Attribute Record is recorded, the sequence shall
start with the first Logical Block, if any, immediately following the last Logical Block over which the
Extended Attribute Record is recorded.
6.4.4.3 Data
Space
The set of Logical Blocks over which the File Section is recorded shall be the Data Space of the File Section.
The bytes in the Data Space shall be numbered consecutively. The numbering shall start from 1 which shall
be assigned to the first byte of the first Logical Block, if any, of the Data Space. The numbering shall
continue through successive bytes of that Logical Block, and then through successive bytes of each
successive Logical Block, if any, of the Data Space.
The numbering shall end with a number equal to the number of bytes in which the File Section is recorded in
the Data Space; or this number shall equal zero if there are no bytes of the file recorded in the Data Space.
6.4.5
Data length of a File Section
The data length of a File Section shall be the number of bytes in which the File Section is recorded in the Data
Space. If this number is less than the number of bytes in the Data Space, then any remaining bytes in the Data
Space shall be ignored in interchange.
6.4.6
Relation of Extended Attribute Record to File Section
An Extended Attribute Record may be associated with a File Section. If present, the Extended Attribute Record
shall identify certain attributes of the file of which the File Section forms a part.