[4250] in linux-scsi channel archive
Re: problem with MO drive (NCR driver problem?)
daemon@ATHENA.MIT.EDU (Henrik Johansson)
Mon Jun 29 09:14:02 1998
Date: Mon, 29 Jun 1998 15:19:54 -0100
From: Henrik Johansson <henrik@lcdata.se>
To: Ronald Wahl <rwahl@gmx.net>
CC: linux-scsi <linux-scsi@vger.rutgers.edu>
Hi!
This kind of problem could arise from an inproper terminated SCSI-chain;
i.e. verify that only the first and the last device in the chain are
terminated
(if You donīt have any devices on the external connection, the last deviceīs
the host-adpater itself).
Good Luck!
// Henrik J.
Ronald Wahl wrote:
> Hi,
>
> I own the MO drive M2513A6 from Fujitsu. If I read/write a large amount
> of data to/from the drive the system is sometimes totally busy (this means
> it is in a nearly frozen state - but data will moved to/from the drive)
> an the load will go up to 2 or 3. After some seconds the system is usable
> again (but the load is constantly in the range of 1..3). This is really
> annoying. Can someone reproduce this? Will there be a fix?
>
> Some system info:
>
> Kernel: 2.0.34 with 2048Byte/Sector-Patch from
> http://home.pages.de/~mbuck/linux/patches.html
> CPU: K6-200 (Stepping 2)
> RAM: 98MB / 512 KB Cache
> SCSI-Controller: NCR53c875 (with NCR53c825 the same problem occurs)
> Driver: BSD driver (at the moment v3.0d, older ones have the same prob)
> SCSI-Devices:
> rwa@goliath:~$ cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
> Vendor: IBM Model: DPES-31080 Rev: S31Q
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 01 Lun: 00
> Vendor: FUJITSU Model: M2513A Rev: 1200
> Type: Optical Device ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 02 Lun: 00
> Vendor: TOSHIBA Model: CD-ROM XM-3601TA Rev: 0725
> Type: CD-ROM ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 06 Lun: 00
> Vendor: IBM Model: DCAS-34330 Rev: S65A
> Type: Direct-Access ANSI SCSI revision: 02
>
> tia,
> ron
>
> --
> \ Ronald Wahl --- rwahl@gmx.net \ Gib Gates keine Chance! /
> \ WWW: http://www.tu-chemnitz.de/~row/ \ /
> \ Talk: rwa@goliath.csn.tu-chemnitz.de \ Pinguine schuetzen. /
> \ PGP key available \ /
>
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