OOPS - ide-scsi bug - SCSI BUS number increasing
From: gijoe
Date: Sat Dec 06 2003 - 12:17:29 EST
There is a bug in ide-scsi module (kernel version 2.6.0-test10 with enabled
preemptible kernel) - this bug causes SCSI BUS number to be increased by one
everytime ide-scsi module is reloaded (modprobe -r ide-scsi then
do modprobe ide-scsi) - it is easy to spot that with cdrecord -scanbus.
This bug doesn't appear to exist in 2.4 kernel series, I've not tested this
with 2.5 series though, this is not cdrtools fault since I tried both versions
(2.00 and 2.00.3) with the same result.When ide-scsi is compiled into the
kernel, obviously the SCSI BUS number doesn't increase since there is no
possibility to reload it during the same kernel session.
/proc/scsi/scsi says:
Attached devices:
Host: scsi13 Channel: 00 Id: 00 Lun: 00
Vendor: LITE-ON Model: LTR-48246S Rev: SS0D
Type: CD-ROM ANSI SCSI revision: 02
And here is the reproduction of bug -
1) Before reloading ide-scsi, output of cdrecord -scanbus:
Linux sg driver version: 3.5.29
Cdrecord 2.00.3 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
Using libscg version 'schily-0.7'
scsibus13:
13,0,0 1300) 'LITE-ON ' 'LTR-48246S ' 'SS0D' Removable CD-ROM
13,1,0 1301) *
13,2,0 1302) *
13,3,0 1303) *
13,4,0 1304) *
13,5,0 1305) *
13,6,0 1306) *
13,7,0 1307) *
2) After preloading (modprobe -r ide-scsi && modprobe ide-scsi)
Linux sg driver version: 3.5.29
Cdrecord 2.00.3 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
Using libscg version 'schily-0.7'
scsibus14:
14,0,0 1400) 'LITE-ON ' 'LTR-48246S ' 'SS0D' Removable CD-ROM
14,1,0 1401) *
14,2,0 1402) *
14,3,0 1403) *
14,4,0 1404) *
14,5,0 1405) *
14,6,0 1406) *
14,7,0 1407) *
Output of uname -r:
2.6.0-test10-athlon
I was trying to fix this bug myself in ide-scsi.c code, but I unfortunately I
don't know it's structure...
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