Illegal Length - Tandberg Data SLR7-140 PROGRAMMER Manual

Tandberg Data
17.3.4.

Illegal Length

When the requested transfer length does not match the
actual block length, the Drive response depends on the
state of the FIX bit, SILI bit and on the value of the
Block Size field in the MODE SELECT Block Descriptor
List.
17.3.4.1. FIX Bit Set to ZERO
If the actual block length (length of block found on the
tape) is smaller than the requested Transfer Length,
only the actual block length is transferred. If the
actual block length
Transfer Length,
transferred.
SILI Bit Is Set To Zero:
If the SILI bit
terminated with CHECK CONDITION status if the requested
transfer length does not match the actual block length.
The Error Code will be set to N
ILLEGAL LENGTH BLOCK READ
and Valid (VADD) bits in the sense data list will be set
to one. The Information
requested Transfer Length minus the actual block length.
This means that
residual length. If the actual block length was smaller
than the specified
positive number. If the actual block length was larger
than the specified
negative number. Negative residues will be presented on
2's complement form. When the command has terminated,
the logical tape position will be located after the
incorrect length block (end of partition side).
SILI Bit Is Set To One:
When the SILI bit is one, the Drive will not return
CHECK CONDITION status if the only error is that the
Transfer Length exceeds the actual block length recorded
on the tape. When
logical tape position
incorrect length block (end of partition side).
When the SILI bit is one and the only error is that the
Transfer Length is less then the actual block length
recorded on the
current Fixed or Variable Block mode:
17-4 Tandberg SLR Product Line SCSI Functional Specifications
is larger
only the requested
is zero, the READ
O ADDITIONAL SENSE INFORMATION
. The illegal length indicator (ILI)
Bytes will
the Information
length, the
length, the
the command
will be
tape, the behavior
than the requested
length
command will
be set to
Bytes indicate
residual will be
residual will be
has terminated,
located after
depends on
Read
is
be
,
the
the
a
a
the
the
the