Bug 144861

Summary:	cdrdao causes SCSI bus reset
Product:	[openSUSE] SUSE Linux 10.1	Reporter:	Ludwig Nussel <lnussel>
Component:	Other	Assignee:	Vladimir Nadvornik <nadvornik>
Status:	RESOLVED FIXED	QA Contact:	E-mail List <qa-bugs>
Severity:	Normal
Priority:	P5 - None
Version:	Beta 1
Target Milestone:	---
Hardware:	Other
OS:	Other
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	hwinfo --scsi

Description Ludwig Nussel 2006-01-23 17:01:58 UTC

every time I run cdrdao scanbus it hangs for a while and I get this in /var/log/messages:

Jan 23 17:43:28 g241 klogd: (scsi0:A:6:0): No or incomplete CDB sent to device.
Jan 23 17:43:28 g241 klogd: scsi0: Issued Channel A Bus Reset. 1 SCBs aborted

As root it prints

# cdrdao scanbus
Cdrdao version 1.2.0 - (C) Andreas Mueller <andreas@daneb.de>
  SCSI interface library - (C) Joerg Schilling
  Paranoia DAE library - (C) Monty

Check http://cdrdao.sourceforge.net/drives.html#dt for current driver tables.

Using libscg version 'schily-0.8'

0,6,0 : PIONEER , DVD-ROM DVD-303 , 1.10
#

As user it doesn't. The reset message happens as user also. I suppose cdrdao does something nasty to the device.

Comment 1 Ludwig Nussel 2006-01-23 17:04:47 UTC

Created attachment 64570 [details]
hwinfo --scsi

Comment 2 Ludwig Nussel 2006-01-23 17:05:19 UTC

Linux g241 2.6.15-git12-6-default #1 Tue Jan 17 14:22:14 UTC 2006 i686 i686 i386 GNU/Linux

Comment 3 Vladimir Nadvornik 2006-01-25 15:04:31 UTC

The message is specific to the aic7xxx driver.

Does it happen with cdrecord -scanbus ? The scanbus code in cdrecord is quite similar.
Can you please attach output  of cdrecord -scanbus -V ?
Or better, can I get access to this machine?

Comment 4 Ludwig Nussel 2006-01-25 15:13:37 UTC

it's g241, no NIS, std root pw. hald polling also causes problems (#145147), therefore it's not running atm. The machine is not running all the time because it's quite loud, please tell me if you're done so I can switch it off again :-)

Comment 5 Vladimir Nadvornik 2006-01-25 16:39:26 UTC

I could not reproduce the messages, they were probably caused by hald too.

The hang is caused by ATA devices detection. If it finds none, it falls back
to obsolete interface which causes the delay. It could be eventually disabled.

As user, resmgr does not report the scsi device, so it is not scanned. ATA devices
are scanned anyway.

Comment 6 Ludwig Nussel 2006-01-25 16:43:59 UTC

Ok, thanks. I'll have to have a look at the resmgr scsi thing in cdrdao then. resmgr doesn't report scsi devices on purpose anymore as the sg device can now get an acl as well.

Comment 7 Vladimir Nadvornik 2006-01-31 08:56:27 UTC

Scanning the old ATAPI interface is now disabled. The delay should no longer appear.