On Wed, 16 Jul 2003, Jesse Keating wrote: > On Wednesday 16 July 2003 15:48, Robert P. J. Day wrote: > > according to joe pranevich's article on the 2.6 kernel, the new > > IDE driver in 2.6 allows one to write CD/RWs without using the > > historical SCSI emulation. has anyone tried that? and how does > > one use cdrecord like this, since cdrecord seems to require a > > SCSI device. > > > > hints? > > You can currently do this w/ RHL9. > > cdrecord dev=ATAPI:0,1,0 > > This assumes that the CDRW is the primary slave. Secondary master would > be 1,0,0 and secondary slave would be 1,1,0. i wanted to test this under 2.6.0-test1 to see if there was a noticeable performance hit, but i can't seem to get it to work. (i've exchanged some offline email with jesse, but it's still a puzzler so i'll throw it open to the masses.) on my laptop, the CD-RW is clearly the slave on the first IDE controller, given that it's referenced by /dev/hdb. i booted, removing the "hdb=ide_scsi" boot parameter and, based on jesse's explanation, i should be able to burn a CD with: # cdrecord -v dev=ATAPI:0,1,0 knoppix.iso what i get instead is the output: ----------------------------------------------------------- Script started on Thu 17 Jul 2003 04:59:52 PM EDT [root@xxxxxxxxx KNOPPIX]# cdrecord -v -dummy dev=ATAPI:0,1,0 knoppix3.2.iso Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling TOC Type: 1 = CD-ROM scsidev: 'ATAPI:0,1,0' devname: 'ATAPI' scsibus: 0 target: 1 lun: 0 Warning: Using ATA Packet interface. Warning: The related libscg interface code is in pre alpha. Warning: There may be fatal problems. Using libscg version 'schily-0.7' atapi: 1 Device type : Disk Version : 0 Response Format: 0 Vendor_info : 'ADAPTEC ' Identifikation : 'ACB-5500 ' Revision : 'FAKE' Device seems to be: Adaptec 5500. cdrecord: Sorry, no CD/DVD-Drive found on this target. [root@xxxxxxxxx KNOPPIX]# exit exit Script done on Thu 17 Jul 2003 05:00:40 PM EDT ------------------------------------------------------- in addition to the above, i get stderr messages stating that the block major device numbers 22, 33 and 34 could not be found, which according to the kernel docs, refer to the second, third and fourth IDE controllers. it's not clear why cdrecord is scanning for additional IDE controllers but, in any case, cdrecord is obviously not seeing the CD-RW properly. i'm open to suggestions. i've verified that the ide_scsi module is not loaded. is there a kernel parameter i should have built in to support the ATAPI: notation here? puzzled. rday -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list
