On Wednesday 17 March 2010 19:59:10 Hugh Brown wrote: > Kern Sibbald wrote: > > It appears that you have backtraced only a single thread. We need to see > > all threads. If it was an automatic dump, something went wrong. If you > > did it manually, probabably you did not enter "thread apply all bt" as > > explained in the Kaboom chapter of the manual. > > Aha -- I did this wrong. In my case, two bacula-sd processes were > showing up during the hang, and I ran btraceback by hand with the PID > of the younger (child?) process only.
OK, that explains why the dump was bizarre :-) > I saw the lockup again this > morning, again with two -sd processes, and ran it with the PID of the > older (parent?) process; this gave me a bunch of threads. Yes, that is probably what we want. However, did you apply the patch that Eric recommended? > > If it's useful, I can forward the dump. However, I've just recompiled > Bacula with the lock manager enabled, and I don't see the hang now. > (Worse luck; I was hoping to recreate the hang, get the lock info, > apply the patch and see if the problem went away. Dang these race > conditions!) At this point, before sending anything, first, please ensure the patch is applied. If so, 90% probability you will not have any more problems. If you do, the lock manager will produce a nice dump with additional information -- if it is not emailed to you, you should find two files in your working directory that contain the traceback and the bactrace outputs. The lock manager will not prevent lockups, but it will detect deadlock situations, and then blow up the SD so as to produce a useful dump. Kern > > Thanks, > Hugh > -- > Hugh Brown, Systems Manager > The Centre for High-Throughput Biology > [email protected] ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Bacula-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/bacula-devel
