From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerhard Schneider Subject: Re: SCSI tape access on 2.6 kernels? Date: Tue, 24 Jan 2006 22:12:23 +0100 Message-ID: <43D69837.8030501@ilsb.tuwien.ac.at> References: <43D604AD.6050607@ilsb.tuwien.ac.at> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig5CB2DD08EFB3EFD3CAB18985" Return-path: Received: from gh-gw1.ilsb.tuwien.ac.at ([128.130.23.14]:7572 "EHLO gh-gw1.ilsb.tuwien.ac.at") by vger.kernel.org with ESMTP id S1750721AbWAXVMd (ORCPT ); Tue, 24 Jan 2006 16:12:33 -0500 In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Kai Makisara Cc: linux-scsi@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig5CB2DD08EFB3EFD3CAB18985 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Kai Makisara schrieb: >> > What are the speeds negotiated between the SCSI HBA and the tape drive = in=20 > these cases? >=20 I don't have the data for Megaraid and Fusion (both are not very verbose on startup), for the very old LSI 875 chipset there it comes: Vendor: HP Model: Ultrium 3-SCSI Rev: G24H Type: Sequential-Access ANSI SCSI revision: 03 target7:0:4: tagged command queuing enabled, command queue depth 16. target7:0:4: Beginning Domain Validation target7:0:4: asynchronous. target7:0:4: Wide Transfers Fail target7:0:4: asynchronous. target7:0:4: FAST-20 SCSI 20.0 MB/s ST (50 ns, offset 16) target7:0:4: Ending Domain Validation Attached scsi generic sg9 at scsi7, channel 0, id 4, lun 0, type 1 I have to investigate why wide negotiation failed (firmware bug - but they will laugh at me if I ask..), but 20 MB/s should be enough for more than 1.5 MB/s transfer speed (there are only the tape drive and the media changer on the bus) GS --=20 Gerhard Schneider Institute of Lightweight Design and e-Mail: gs@ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 1 58801 31716 Vienna University of Technology / Austria Fax: +43 1 58801 31799 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/~gs/ --------------enig5CB2DD08EFB3EFD3CAB18985 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFD1pg7E6e53f4wQG4RAkyDAJwL/NxPybA45lbzGDP+qvcP5ETYZgCfXZBr q0Dkqg7LAnilgDOmkZxJfYE= =mquX -----END PGP SIGNATURE----- --------------enig5CB2DD08EFB3EFD3CAB18985--