Bug 3731

Summary:	mount cdrom "Serverworks OSB4 in Impossible state"
Product:	Gentoo Release Media	Reporter:	slais-sysweb <slais-www>
Component:	Everything	Assignee:	Brandon Low (RETIRED) <lostlogic>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	All
URL:	http://www.ucl.ac.uk/~uczcdjc
Whiteboard:
Package list:		Runtime testing required:	---

Description slais-sysweb 2002-06-14 09:09:20 UTC

Using Gentoo 1.2 on IBM eServer Xseries 232
CD ROM drive is IDE (only IDE device)

CD rom boots 
ok and installation proceeds ok according to installation instructions (onl variation is 
'modprobe ips' required for IBM ServerRAID)
but at
mount /dev/cdroms/cdrom0 /mnt/cdrom -o 
ro -t iso9660

I get and error
'Serverworks OSB4 in impossible state'

and I have to 
reboot.

dmesg output shows
Serverworks OSB4
ide 0 BM-DMA at 0x0840 0x0847, BIOS 
settings: hda: DMA
hda LTN4865, ATAPI CD.DVD-ROM
ide0 at 0x1f0 -0x1f7, 0x3f6 on irq14

A 
Google search shows some correspondance about this on the kernel mailing list with regard to 
Seagate drives but nothing about cdrom problems

I have sucessfully installed SuSE 7.3 and 
Debian 2.2r5 on this system so this does appear to be something in the Gentoo kernel

Comment 1 slais-sysweb 2002-06-19 06:55:03 UTC

a work-around for this is to use

hdparm -d0 /dev/hda

after booting gentoo.
recompiling 
the kernel without DMA should also fix this

Comment 2 Michael Cohen (RETIRED) gentoo-dev

2002-06-25 16:50:49 UTC

Report this to the Linux kernel mailinglist, at linux-kernel@vger.kernel.org. 
Turning off DMA works around this on the serverworks box I have at work.

Comment 3 Brandon Low (RETIRED) gentoo-dev

2002-09-06 17:51:12 UTC

not a bug that we handle, hopefully future linux kernel versions will fix this
for you.

Comment 4 Chris Gianelloni (RETIRED) gentoo-dev

2005-03-25 11:24:40 UTC

Moving these so we can remove the "Install CD" component from "Gentoo Linux".

I apologize to everyone for this spam, but according to the bugzilla developers,
this is the only reasonable way to do this.