on 13:29 Sat 19 Feb, Eric Gerzon (ericgerzon at gmail.com) wrote: > Hello, > > I am trying to get some more information about the following issue: > > # strace -p 2256 > attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted As root? (Prompt suggests yes). Is another strace attached to the process already (or gdb session)? Some kernel hardening / selinux features may interfere with this as well, though I don't know specifics. > I am trying to trace an mdadm re-sync pid and I keep getting the above > error. > > I have done some digging on google and forums, but have not had much luck. > > Redhat-release says > > CentOS release 5.5 (Final) > > uname: > 2.6.18-194.32.1.el5 > > Any help would be great. -- Dr. Ed Morbius, Chief Scientist / | Robot Wrangler / Staff Psychologist | When you seek unlimited power Krell Power Systems Unlimited | Go to Krell!