Technical data

MOUNT
By reading the directory contents, the client can be aware of any changes
to the number of files within the directory, even if the directory’s modify
time was not updated.
/CONVERT
/NOCONVERT
Optional. Default: /CONVERT.
Converts files with the following attributes to STREAM_LF files:
• Sequential
• Variable length
• Carriage return/carriage control (VAR-CR)
The convert feature works with some utilities and DCL commands but not with
others. For example, it works with the CREATE command and with EDIT/TPU,
but it does not work with COPY, BACKUP, or EDIT/EDT. There is no simple
way to identify what works. However, for the feature to take effect, the following
conditions must be satisfied:
• The file attributes must be sequential, variable length, and carriage
return/carriage control.
• The file must be opened for exclusive write access (generally true for newly
created files).
• The file must be opened with the FAB$M_SQO bit set in the FAB$L_FOP
field.
• The file creation and the open for write must be done in one step. That is, if
the program first creates the file and afterward opens it for write, the convert
feature does not work.
You can convert only those files that were opened using RMS sequential access.
For additional information, refer to the HP TCP/IP Services for OpenVMS
Management manual.
/DATA [= {read_bytes | write_bytes}]
Optional. Default: /DATA=(8192,8192).
Largest amount of NFS data received or transmitted in one network operation.
The options mean:
• read_bytes — Data received. Minimum value = 512.
• write_bytes — Data transmitted. Minimum value = 512.
If you specify only one value, it applies to both READ and WRITE.
You do not need to use /DATA unless a remote NFS server imposes a restriction
on data size. If the server requests a smaller transfer size than you specified, the
server’s requested value overrides the one you set.
/FILEIDS [= {UNIQUE | NONUNIQUE}]
Optional. Default: /FILEIDS=UNIQUE.
With UNIQUE, the client uses the file name and 32-bit NFS file ID when
processing the directory information returned by the server to determine whether
cached information is valid.
Command Descriptions 2–67