Lists the output of the fms command
Description
The FMSLog file lists the output generated by the fms (file mark size) command. The fms command determines the tape capacity and
end-of-file (EOF) mark size for a tape drive. The command both displays its output on the screen and writes it to the FMSLog file, which it creates in the directory from which it is issued.
The command creates the FMSLog file if it does not already exist in the current working directory, in which case the issuer of the command must have write, execute, and insert permissions on the directory from which the command is issued. If the file already exists in the current working directory, the command reinitializes the file (clears its contents) before writing to it, in which case the issuer needs only write permission on the file.
The information written to the FMSLog file is useful for specifying a tape drive's configuration parameters in the TapeConfig file on a Tape Coordinator machine. The FMSLog file is an ASCII file, so it can be viewed with the more command (or a similar command appropriate to the local operating system), which requires read permission on the file.
The tape size reported in the file should be reduced by 10 to 15% before being used in the TapeConfig file. The EOF mark size in the file should be increased by 10 to 15% before being used in the TapeConfig file.
The FMSLog file is not created if a problem with the tape drive prevents execution of the fms command.
Examples
An example of the FMSLog file follows. The file lists the tape capacity and the size of the EOF mark for the tape drive used in the fms command. The
tape drive used in the example uses tapes 2,136,604,672 bytes in size, and creates end of file marks of size 1,910,220 bytes in size.
fms test started
wrote 130408 blocks
Tape capacity is 2136604672 bytes
File marks are 1910220 bytes
Related Information
Commands: fms(8dfs)
Files: TapeConfig(4dfs)