Red Hat Bugzilla – Bug 122232
General SG_IO instabilities
Last modified: 2015-01-04 17:05:36 EST
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Description of problem:
This is an extension of bug 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
Attached are cdrecord output and kernel output for a cdrecord failure.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Use programs that access SCSI devices via SG_IO
Actual Results: SCSI bus resets, CD drives becoming inaccessible
Expected Results: Normal operation
Created attachment 99875 [details]
Created attachment 99876 [details]
Seems fixed in current rawhide kernel.