[90] in linux-scsi channel archive
Recommendations for SCSI controller to drive Exabyte EXB-8200 tape drive?
daemon@ATHENA.MIT.EDU (Scott Blachowicz)
Fri Mar 3 02:31:06 1995
Date: Thu, 2 Mar 95 15:08 PST
From: scott@statsci.com (Scott Blachowicz)
To: linux-scsi@vger.rutgers.edu
Reply-to: scott@statsci.com
Hi-
Since the ncr53c7,8xx SCSI driver barfs when I try to write to this tape
drive, I'm looking for alternatives. I'd love to find out how to make
what I've got work (so if you have ideas on that, let me know), but I'd
really like to get a backup scheme in place.
Extracted from a previous post to c.o.l.setup:
I'm running Linux from a Slackware 2.1 distribution and am now up to a
1.1.94 kernel. My disc drive a 1Gb IDE drive (on a PCI IDE card at
IRQ 14). I just added a NCR 8150S PCI (based on the 53c815 chip) card
(at IRQ 9 in PCI slot 1) to drive an internal CD-ROM (Toshiba 3501 at
ID 2) and a newly acquired Exabyte 8200 drive (at ID 5 - I've tried it
both internal & external). The CDROM works just fine.
Also, I was able to successfully backup around 70 Mb to a tape from
Windows NT 3.5, so I would guess that the termination and drive are
OK.
1) Say the magic incantation and v'oila, it works. What? Why?
2) Replace the [SCSI-1] Exabyte 8200 with a different drive. Why?
3) Replace the NCR based SCSI card. Why?
4) Get a cheap ISA based SCSI card to tide me over until the 53c7,8xx
driver gets "fixed" to work for me. Card recommendations?
5) Switch to FreeBSD (which one has been reported to work just fine
with this setup).
6) Switch completely over to 'umsdos' and do backups from Windows NT.
At any rate, the messages I see in my /var/adm/messages go like this:
...etc...
Feb 22 21:43:24 sabimi kernel: scsi-ncr53c7,8xx : at PCI bus 0, device 13, function 0
Feb 22 21:43:24 sabimi kernel: scsi-ncr53c7,8xx : warning : revision of 3 is greater than 2.
Feb 22 21:43:24 sabimi kernel: scsi-ncr53c7,8xx : NCR53c815 at memory 0xf0800000, io 0x6000, irq 9
Feb 22 21:43:24 sabimi kernel: scsi0 : using io mapped access
Feb 22 21:43:24 sabimi kernel: scsi0 : using initiator ID 7
Feb 22 21:43:24 sabimi kernel: scsi0 : using level active interrupts.
Feb 22 21:43:24 sabimi kernel: scsi0 ; burst length 8
Feb 22 21:43:24 sabimi kernel: scsi0 : using 40MHz SCSI clock
Feb 22 21:43:24 sabimi kernel: scsi0 : m_to_n = 0x90, n_to_m = 0xa0, n_to_n = 0xb0
Feb 22 21:43:24 sabimi kernel: scsi0 : NCR code relocated to 0x1f80dc
Feb 22 21:43:24 sabimi kernel: scsi0 : testing
Feb 22 21:43:24 sabimi kernel: scsi0 : test 1 started
Feb 22 21:43:24 sabimi kernel: scsi0 : tests complete.
Feb 22 21:43:24 sabimi kernel: scsi0 : NCR53c{7,8}xx (rel 3)
Feb 22 21:43:24 sabimi kernel: scsi : 1 host.
Feb 22 21:43:24 sabimi kernel: Vendor: EXABYTE Model: EXB-8200 Rev: 265T
Feb 22 21:43:24 sabimi kernel: Type: Sequential-Access ANSI SCSI revision: 01
Feb 22 21:43:24 sabimi kernel: Detected scsi tape st0 at scsi0, id 5, lun 0
Feb 22 21:43:24 sabimi kernel: scsi : detected 1 SCSI tape total.
...etc...
Feb 22 21:44:32 sabimi kernel: scsi0 : DMA FIFO not empty
Feb 22 21:45:05 sabimi kernel: xx001c780x001c78x001c780x001c780x001c780x001c78x001c780x001c7x001c780x001c780x001c78x001c7x001c78x001c78x001c78x001c78x001cx001c7x001c78x001c78x001c7x001c780x001c7x001c780x001c78x001c78x001c780x001c780x001c78x001c78x001c7x001c7x001c78x001c7809
Feb 22 21:45:05 sabimi kernel: 001f888c : 0x98080000 0x02040000
Feb 22 21:45:05 sabimi kernel: scsi0 : DANGER : abort_connected() called
Feb 22 21:45:05 sabimi kernel: scsi0 : DMA FIFO not empty
Feb 22 21:45:05 sabimi kernel: scsi0 : DMA FIFO not empty
Feb 22 21:45:05 sabimi kernel: scsi0 : unexpected phase unknown at dsp = 0x1f8884
Feb 22 21:45:05 sabimi kernel: 001f8884 : 0x0e000001 0x001c7809
Feb 22 21:45:05 sabimi kernel: 001f888c : 0x98080000 0x02040000
Help! Thanx!
