Bug 59349

Summary: ATAPI resets with DMA enabled on cdrom for OSB4/CSB5 system
Product: [Retired] Red Hat Linux Reporter: Roderick Constance <rconstance>
Component: kernelAssignee: Arjan van de Ven <arjanv>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.2   
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2002-02-06 00:56:33 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
lspci
none
lspci -v -v of IDE controller
none
IDE excerpt of dmesg
none
excerpt of /var/log/messages none

Description Roderick Constance 2002-02-06 00:48:02 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.4.3-xfs-101 i686)

Description of problem:
If I enable DMA for my Teac CD-W24E the drive won't mount.  It retries a few
times and eventually causes an ATAPI reset.  If I turn off DMA, it works fine. 
The same thing happens if I try to dd the cdrom image to the hard disk, except
that Linux will try to disable DMA automatically.  But for some reason, the
controller doesn't think DMA is disabled.


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. try to mount a cd (/dev/cdrom -> /dev/hdd): # mount /dev/cdrom
2. or try to copy the CD image to a hard disk: # dd if=/dev/cdrom
3.
	

Actual Results:  The system takes about 30-60 seconds to mount a CD if at all. 
Trying to dd the image will fail with "I/O Error".


Expected Results:  The system should have mounted the CD...
or the image should have been copied to the local disk without an I/O error.

Additional info:

I'm using the RedHat 7.2 errata kernel (2.4.9-21).  The drive is not on the
ide/ide-dma.c blacklist.  I have also consistently repeated it on a Mitsumi
SR242S.  The IDE controller is a Serverworks CSB5, but I can also reproduce this
problem on the OSB4.
Comment 1 Roderick Constance 2002-02-06 00:52:58 UTC 
Created attachment 44637 [details]
lspci
Comment 2 Roderick Constance 2002-02-06 00:54:15 UTC 
Created attachment 44638 [details]
lspci -v -v of IDE controller
Comment 3 Roderick Constance 2002-02-06 00:55:32 UTC 
Created attachment 44639 [details]
IDE excerpt of dmesg
Comment 4 Roderick Constance 2002-02-06 00:56:28 UTC 
Created attachment 44640 [details]
excerpt of /var/log/messages
Comment 5 Arjan van de Ven 2002-02-11 16:07:57 UTC 
cdrom drive added to the "not ATAPI compliant" blacklist; should appear in
rawhide shortly.