On Sun, Feb 20, 2011 at 4:34 AM, James Pearson <james-p@moving-picture.com> wrote:

Eric Gerzon wrote:
> Hello,
>
> I am trying to get some more information about the following issue:
>
> # strace -p 2256
> attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
>
> I am trying to trace an mdadm re-sync pid and I keep getting the above
> error.

I believe the MD re-sync process is actually a kernel thread - and you
can't strace kernel threads.

James Pearson

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