Bug 122232

Summary: General SG_IO instabilities
Product: [Fedora] Fedora Reporter: Ralf Ertzinger <redhat-bugzilla>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: rawhideCC: pfrields
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: 2004-10-08 13:33:29 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
cdrecord output
none
Kernel output none

Description Ralf Ertzinger 2004-05-02 11:57:15 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040422

Description of problem:
This is an extension of bug 122007
(https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=122007)

Doing SG_IO via SCSI cdrom device nodes instead of using sg seems to
be unstable in general. Bug 122007 details trobles when using
cdparanoia to rip audio data.

Very similar errors occur when using cdrecord to access a burner via
--dev=/dev/scdX (Simply blanking a CDRW can be enough).

The system this occurs on is doing perfectly fine when using
kernel-2.6.4-1.300 and doing cdparanpoia/cdrecord via the sg devices.

Maybe the "kill SG for CDROM devices" ought ot be postponed into the
FC3 period.

Attached are cdrecord output and kernel output for a cdrecord failure.

Version-Release number of selected component (if applicable):
kernel-2.6.5-1.344

How reproducible:
Always

Steps to Reproduce:
1. Use programs that access SCSI devices via SG_IO
2.
3.
    

Actual Results:  SCSI bus resets, CD drives becoming inaccessible

Expected Results:  Normal operation

Additional info:
Comment 1 Ralf Ertzinger 2004-05-02 11:57:44 UTC 
Created attachment 99875 [details]
cdrecord output
Comment 2 Ralf Ertzinger 2004-05-02 11:58:05 UTC 
Created attachment 99876 [details]
Kernel output
Comment 3 Ralf Ertzinger 2004-10-08 13:33:29 UTC 
Seems fixed in current rawhide kernel.