The Ftape Installation and Usage Guide
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Description | Write COUNT file marks at the current position. For ftape-3.04d (and later versions) this command is illegal -- as is all write access to the tape -- unless the tape is located at either BOT (Begin Of Tape) or EOD (End Of Data, end of area that already is occupied by data). | |||||
Notes |
The A volume table entry is created that covers all of the data from the end of the previous volume or BOT (if the tape is empty) up to the current position. If nothing has been written, then a volume table entry for a zero-size volume is created. If COUNT is greater than 1 then COUNT - 1 additional zero-size volume table entries are created. | |||||
Caveats |
Note that | |||||
Limitations | There is a limit of the maximum available number of file marks per cartridge. Each file marks consumes 128 bytes in the volume table segment, the volume table segment has a size of 29k which yields a maximum number of 232 file marks. The volume table overflow extension as proposed by various qic standards (see QIC Organisations Home Page) is not supported by ftape. | |||||
Bugs |
When using | |||||
Example |
COUNT set to `
or equivalently (since COUNT has the value `
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References |
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