User Guide

B-16 Ampex 1308911-02
Model No.
Running Head
Introduction Device Special Files
Default Actions While Open (Continued)
/dev/rmt/tpsXdYnrnf
/dev/rmt/tpsXdYnrnfnm
DST_APPEND_ONLY
, DST_NO_REFORMAT, DST_IGN_FM, DST_ZERO_ON_FM, and
DST_ZERO_ON_EW —
Same as/dev/rmt/tpsXdY above.
DST_NO_FLUSH - On
Filemarks written to tape are buffered.
Default Actions During Close
/dev/rmt/tpsXdY
DST_NO_FM —
Off
If the last command issued before the close() was a SCSI Write command,
writes a single filemark (flushing any data in the tape drive buffer to tape).
DST_NO_FLUSH — Off
Flushes the tape drive buffer to tape.
DST_NO_REWIND — Off
Sets the current position to BOP (which implicitly flushes the tape drive
buffer to tape even though a file mark is not written).
DST_NO_RESERVE — On
No release required.
DST_SPC_FWD — Off
None; overridden by DST_NO_REWIND.
/dev/rmt/tpsXdYnr
/dev/rmt/tpsXdYstat
DST_NO_FM — Off
If the last command issued before the close() was a SCSI Write command,
writes a single filemark (flushing any data in the tape drive buffer to tape).
DST_NO_FLUSH — Off
Flushes the tape drive buffer to tape.
DST_NO_REWIND — On
None; overridden by DST_SPC_FWD.
DST_NO_RESERVE — On
No release required.
DST_SPC_FWD — Off
If a file was partially read and close is called, the current position is
maintained within the file.
Table B-6. DST/DIS Device Special Files Default Actions (Continued)
Device Special File Interface Parameter Setting and Action Performed