I have an unusual problem with a SCSI tape drive. It is an old DAT 2 drive. It works with a RH 7.3 system, but with the same controller, it does not work when used with FC-6 or F7. But the strange things is that it will work with a USB to SCSI adapter. What happens is that I get a tape I/O error from the drive when I put in a tape. I suspect that when the drive is initialized when connected to the PCI SCSI card, the drive is put in a mode where it will not detect the proper block size of the tape. Host: scsi2 Channel: 00 Id: 03 Lun: 00 Vendor: ARCHIVE Model: Python 25501-XXX Rev: 5.45 Type: Sequential-Access ANSI SCSI revision: 02 With USB SCSI: Aug 7 14:42:07 asus kernel: st 2:0:3:0: Attached scsi tape st0 Aug 7 14:42:07 asus kernel: st 2:0:3:0: st0: try direct i/o: yes (alignment 512 B) Aug 7 14:42:07 asus kernel: st 2:0:3:0: Attached scsi generic sg2 type 1 Aug 7 14:42:07 asus kernel: osst :I: Tape driver with OnStream support version 0.99.4 Aug 7 14:42:07 asus kernel: osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $ With Adaptec AVA-29030 PCI SCSI controller: Jul 27 01:21:51 toshiba kernel: osst :I: Tape driver with OnStream support version 0.99.4 Jul 27 01:21:51 toshiba kernel: osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $ Jul 27 01:21:51 toshiba kernel: st: Version 20070203, fixed bufsize 32768, s/g segs 256 Jul 27 01:21:51 toshiba kernel: st 2:0:5:0: Attached scsi tape st0 Jul 27 01:21:51 toshiba kernel: st 2:0:5:0: st0: try direct i/o: yes (alignment 512 B) Status message from mt when working: # mt -f /dev/st0 status SCSI 2 tape drive: File number=0, block number=0, partition=0. Tape block size 512 bytes. Density code 0x13 (DDS (61000 bpi)). Soft error count since last status=0 General status bits on (41010000): BOT ONLINE IM_REP_EN I should have saved the status message from when I put is a new tape, and did a status when I was attached to the PCI SCSI controller card. But I didn't, and I do not have any more new tapes right now. After I tried writing to a new tape, the drive would error out when I would tray and access the tape again. (The same tape still works when I use the USB controller.) I tried a Google search, but I didn't turn up anything helpful. I guess I am not searching for the right things... I am hoping someone has run into this before. If not, the next thing I will try is putting the SCSI controller/tape drive back in the F7 box, and feeding the tape drive the density code and block size and see if that helps. But I am puzzled by the fact that it works when hot-plugged using the USB SCSI controller, but not the PCI SCSI controller. I would suspect SCSI problems, except that it works with RH-7.3 (I was hoping to retire that system...) Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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