RE: port-amd64/53890: st(4) driver for tapes not working o variable block size

["G J van der Grinten" <pa0gri%amsat.org@localhost>]

The following reply was made to PR port-amd64/53890; it has been noted by GNATS.

From: "G J van der Grinten" <pa0gri%amsat.org@localhost>
To: <gnats-bugs%NetBSD.org@localhost>
Cc: <port-amd64-maintainer%netbsd.org@localhost>,
	<gnats-admin%netbsd.org@localhost>,
	<netbsd-bugs%netbsd.org@localhost>
Subject: RE: port-amd64/53890: st(4) driver for tapes not working o variable block size
Date: Fri, 18 Jan 2019 20:52:36 +0100

 Hallo Michael,
 
 I know the character block size is 2048. When I use that I get 2 blocks and some
 ot the 3rd.
 I use the raw device and that should do the variable bock size (as advertized)
 But on the recond read for a block I get an " Invalid argument" and that is
 invalid by itself.
 
 Program works on IRIX, MIPSOS and linux.
 
 No informative message found in DMESG output.
 
 Here a (partial) log on a working (linux, uch)
 
 Converting tape to tap file xxz  
 rc NOP ioctl = 0
 rc on set block size = 0
 rc on set density = 0
 rc on set compression = 0
 len1 = 00486 rc NOP ioctl = 0
 len2 = 00486
 len1 = 00930 rc NOP ioctl = 0
 len2 = 00930
 len1 = 00936 rc NOP ioctl = 0
 len2 = 00936
 len1 = 00826 rc NOP ioctl = 0
 len2 = 00826
 len1 = 00946 rc NOP ioctl = 0
 len2 = 00946
 len1 = 00960 rc NOP ioctl = 0
 len2 = 00960
 len1 = 00930 rc NOP ioctl = 0
 len2 = 00930
 len1 = 00952 rc NOP ioctl = 0
 len2 = 00952
 len1 = 00142 rc NOP ioctl = 0
 len2 = 00142
 len1 = 00486 rc NOP ioctl = 0
 len2 = 00486
 
 Regards, Gerard.
 
 -----Original Message-----
 From: Michael van Elst [mailto:mlelstv%serpens.de@localhost] 
 Sent: Friday, January 18, 2019 8:25 PM
 To: port-amd64-maintainer%netbsd.org@localhost; gnats-admin%netbsd.org@localhost;
 netbsd-bugs%netbsd.org@localhost; pa0gri%amsat.org@localhost
 Subject: Re: port-amd64/53890: st(4) driver for tapes not working o variable
 block size
 
 The following reply was made to PR port-amd64/53890; it has been noted by GNATS.
 
 From: mlelstv%serpens.de@localhost (Michael van Elst)
 To: gnats-bugs%netbsd.org@localhost
 Cc: 
 Subject: Re: port-amd64/53890: st(4) driver for tapes not working o variable
 block size
 Date: Fri, 18 Jan 2019 19:19:57 -0000 (UTC)
 
  pa0gri%amsat.org@localhost writes:
  
  >>Description:
  >I have tried my problem under various versions of NetBSD AMD65 and I386.
  >I want to read and write .TAP files (SIMH containers)on various Tape drive 
  >models (currently a DDS4 Drive.
  >To my great disappointment It works flawlessly under Debian Linux.
  
  The driver probably logs some messages that may explain why it fails.
  
  N.B. st_blocksize is not the blocksize of the device. NetBSD just
  returns MAXBSIZE (==MAXPHYS) for a character device which is pretty
  useless. But that's not your problem here.
  
  
  -- 
  -- 
                                  Michael van Elst
  Internet: mlelstv%serpens.de@localhost
                                  "A potential Snark may lurk in every tree."