Red Hat Bugzilla – Bug 107671
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
Last modified: 2007-11-30 17:10:32 EST
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Description of problem:
When using cdrecord as a normal user I see the following warning messages:
> cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
> cdrecord: WARNING: This causes a high risk for buffer underruns.
I changed /usr/bin/cdrecord to suid root, as suggested in the man page:
chown root /usr/bin/cdrecord
chmod 4711 /usr/bin/cdrecord
... however this didn't help.
There don't seem to be any actually problems burning CD's as a normal user, just
the warning messages.
These warnings are not present when using cdrecord as the root user.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. as normal user: cdrecord -v -dao -pad -eject <image.iso>
Actual Results: CD burned fine, but warning messages are displayed
Expected Results: no warnings
just warnings that it cannot get into the realtime scheduler... please report
this upstream to the author of cdrecord