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6.3.1: ftape.o module options.

ft_tracings=TR0,TR1,TR2,TR3,GT

Specify the trace levels for the ftape devices. TR0 to TR3 correspond to the debugging message that are produced by each of the ftape devices `/dev/qft0' to `/dev/qft3' while GT (General Trace-level) sets the trace level for messages that can't be mapped to a specific device. TR#X is a decimal number which controls the verbosity of the driver in the following manner:

0

print bugs


1 + errors
2 + warnings
3 + information
4 + more information
5 + program flow
6 + fdc/dma info
7 + data flow
8 + everything else

It is also possible to tune the amount of debugging output at run-time (see MTSETDENSITY) as well as to set a limit to the amount of debugging output ftape is able to produce at all (see TRACE_FLAGS).


ft_fdc_driver=DRV0,DRV1,DRV2,DRV3

Define which FDC driver to use for which ftape device. DRV0 to DRV3 are strings which serve as identifiers for the FDC drivers and are passed as argument to the kernel's module auto-loading mechanism and thus simply give the module name of the FDC module.

In short, DRV#X should be one out of `ftape-internal', `trakker' or `bpck-fdc'. In case you don't know which driver to use, you can specify multiple drivers per device by separating them with a colon. An example parameter specification for using the ftape-internal module for `/dev/qft0' and the trakker or bpck-fdc module for `/dev/qft1' would look like follows

ft_fdc_driver=ftape-internal,trakker:bpck,none,none

The special keyword `none' serves to disable the devices `/dev/qft2' and `/dev/qft3'. One could pass any string except the name of an existing module, but the special name `none' prevents ftape from passing the parameter to the kernel module auto-loading mechanism.

If you leave the FDC driver specification for the third and fourth device blank like so

ft_fdc_driver=ftape-internal,trakker:bpck

then ftape module will try all already loaded FDC drivers for `/dev/qft2' and `/dev/qft3' as well, searching for additional tape drives. The same affect is achieved by passing the special keyword `auto' as FDC driver name, or by passing the empty string.


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