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Date:      Mon, 05 May 1997 17:54:41 -0700
From:      Julian Elischer <julian@whistle.com>
To:        Gavin Cameron <gavin@ormond.unimelb.edu.au>
Cc:        scsi@freebsd.org, hardware@freebsd.org
Subject:   Re: Anyone using a CONNER CTT8000-S tape drive
Message-ID:  <336E8151.19A13460@whistle.com>
References:  <199705060018.KAA20213@gateway.ormond.unimelb.edu.au>

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Gavin Cameron wrote:

>   Present Mode:   Density = 0x00         Blocksize = 1024 bytes
>   ---------available modes---------
>   Mode 0:         Density = 0x00         Blocksize variable
>   Mode 1:         Density = X3.136-1986  Blocksize = 512 bytes
>   Mode 2:         Density = X3.39-1986   Blocksize variable
>   Mode 3:         Density = X3.54-1986   Blocksize variable

ok, fair enough..


> May  6 10:17:02 server /kernel: xs(0xf14a2200): flg(0x20)sc_link(0xf10bb980)retr(0x2)timo(0x186a0)cmd(0xf14a2258)len(0x6)data(0x0)len(0x0)res(0x0)err(0x0)bp(0x0)st0(ahc0:4:0): command: 0,0,0,0,0,0-[0 bytes]
> May  6 10:17:02 server /kernel: st0(ahc0:4:0): scsi_done
> May  6 10:17:02 server /kernel: st0(ahc0:4:0): command: 0,0,0,0,0,0-[0 bytes] 
  test ready.....

> May  6 10:17:02 server /kernel: st0(ahc0:4:0): command: 1b,0,0,0,1,0-[0 bytes]
load/unload
> May  6 10:17:02 server /kernel: st0(ahc0:4:0): command: 0,0,0,0,0,0-[0 bytes]
test ready again
> May  6 10:17:02 server /kernel: st0(ahc0:4:0): command: 5,0,0,0,0,0-[6 bytes]
> May  6 10:17:02 server /kernel: ------------------------------
> May  6 10:17:02 server /kernel: 000: 00 00 00 00 00 00
> May  6 10:17:02 server /kernel: ------------------------------
lookfor block limits (failed)

> May  6 10:17:03 server /kernel: st0(ahc0:4:0): command: 1e,0,0,0,1,0-[0 bytes]
disallow media removal (failed) but open succeeds.


--
> May  6 10:17:03 server /kernel: st0(ahc0:4:0): calling private start()
> May  6 10:17:03 server /kernel: st0(ahc0:4:0): ststart st0(ahc0:4:0): Open complete
> May  6 10:17:03 server /kernel: st0(ahc0:4:0): stopen: dev=0xe00 (unit 0) result 0

looks like some logging data went missing here..
try lowering the debug level to 1 or 2 or 4 and see what gives better
info.
I would suggest 1


> May  6 10:17:03 server /kernel: st0(ahc0:4:0):
> May  6 10:17:03 server /kernel: ststrategy st0(ahc0:4:0): 10240 bytes @ blk0
> May  6 10:17:03 server /kernel: st0(ahc0:4:0): ststart st0: oops not queued
hey the drive never got called..
how about trying this directly after a reboot..
(set debugging == 1
and then set the blocksize to (say 512)
and then try writing to the drive.



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