Re: librados AIO problem diagnostic

[Sebastien Ponce <sebastien.ponce@cern.ch>]

Hurray, I manage to seg fault ! (sounds odd this sentence...)
So indeed, fresh ubuntu, debug mode does it. What I've also changed in
the meantime is the type of machine. It's still virtual, but more
powerful (4 cores).

Let's debug it now...

Sebastien


On Wed, 2014-10-01 at 15:09 +0200, Sebastien Ponce wrote:
> Ok, we are getting closer then.
> I'll try to reinstall the ubuntu machine and run with -g.
> 
> Sebastien
> 
> On Wed, 2014-10-01 at 15:08 +0200, Loic Dachary wrote:
> > 
> > On 01/10/2014 13:37, Sebastien Ponce wrote:
> > > I've tried it on the RHEL6 like machine, but no luck. Or should I say I
> > > was lucky ? Anyway no crash.
> > > 
> > > Discussing with Dan Van Der Ster, he told me that he had once the case
> > > where the crash was there or not depending on the libc version. Just in
> > > case, what are you using ? On the machine I've used this morning, it's
> > > glibc-2.12-1.107.el6.x86_64
> > 
> > I'm using 
> > 
> > ii  libc-bin                                              2.19-0ubuntu3 
> > 
> > and I do not have glibc installed. I'm quite sure you can reproduce the problem on a fresh Ubuntu 14.04 with the following
> > 
> > ./autogen.sh ; ./configure --disable-static --with-debug CFLAGS="-Wall -g" CXXFLAGS="-Wall -g"
> > 
> > it fails consistently in my container. When I try with ./configure it does not fail. Something is going on when there is -g instead of the default flags. I checked that --disable-static and --with-debug make no difference.
> > 
> > Cheers
> > 
> > > 
> > > Sebastien
> > > 
> > > On Wed, 2014-10-01 at 10:31 +0200, Loic Dachary wrote:
> > >> Hi,
> > >>
> > >> On 01/10/2014 09:28, Sebastien Ponce wrote:
> > >>> Thanks for this effort !
> > >>> I'll look at all that this afternoon (it's mid morning here).
> > >>
> > >> Same here : I'm in Paris ;-)
> > >>
> > >>> Concerning configure and autogen, I do the standard (naive ?)
> > >>> "./autogen.sh; ./configure; make" given by the readme.
> > >>
> > >> Could you try with
> > >>
> > >> ./autogen.sh ; ./configure --disable-static --with-debug CC='ccache gcc' CXX='ccache g++' CFLAGS="-Wall -g" CXXFLAGS="-Wall -g" ; make
> > >>
> > >> and let me know if you see a problem when running
> > >>
> > >> cd src
> > >> rm -fr dev out ;  mkdir -p dev ; CEPH_NUM_MON=1 CEPH_NUM_OSD=3 ./vstart.sh -d -n -X -l mon osd
> > >> ./ceph_test_rados_striper_api_aio
> > >>
> > >> I'm trying with your "./configure" on my end to check if this changes something.
> > >>
> > >> It's going to be a fun one ;-)
> > >>
> > >> Cheers
> > >>
> > >>>
> > >>> Sebastien
> > >>>
> > >>>
> > >>> On Wed, 2014-10-01 at 09:01 +0200, Loic Dachary wrote:
> > >>>> Hi Sebastien,
> > >>>>
> > >>>> In the context of http://tracker.ceph.com/issues/9356 I'm trying to collect as much information as I can in an environment that can be reconstructed to avoid interferences. Could you please let me know which ./configure line you are using ? Or which do_autogen.sh command you are using.
> > >>>>
> > >>>> Thanks in advance :-)
> > >>>>
> > >>>
> > >>>
> > >>> --
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> > >>>
> > >>
> > > 
> > > 
> > > --
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> > > 
> > 
> 
> 
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