[386BSD] problems with QIC-02 streamer driver

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1 total messages Started by Volker Paepcke Wed, 27 Jan 1993 22:53

#5737

Author: Volker Paepcke
Date: Wed, 27 Jan 1993 22:53

25 lines
1465 bytes

hi!

I've some problems with the specification of the correct blocksize
for accessing the streamertape (wangtek qic-02). 
With 512 byte blocks and 1kb blocks there is no problem.
But at greater blocksizes I got anly part of the stuff back
after restoring from tape (there is no error reporting from tar
or from the kernel!!!).
It seems to me, that there is only a small blocksize for tape-access
allowed, but there is another problem:
With small blocksizes the tapestreamer is repositioning all the time
while IO-operations wich is not very good for the tapes and very very
slow!
I saw a buffering capability in the BSDI/386 rewritten code of the
wt.c driver stuff. Is there something similar like buffering or
any patches for improvement on this subject which is running under
386bsd too?
Buying a SCSI-streamer device is no solution for me, since i don't
have the money right now. Any help is apreciated!
thanks in advance,

volker

oh, i forgot:
Can i write tapemarks and is there a mt-command?

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