Ceph

osd/PG.cc: 1318: FAILED assert(info.last_update > pi.last_update)
 ceph version 0.40-206-g6c275c8 (commit:6c275c8195a8ae04e8a492d043fa6dfd60cecd82)
 1: (PG::activate(ObjectStore::Transaction&, std::list<Context*, std::allocator<Context*> >&, std::map<int, std::map<pg_t, PG::Query, std::less<pg_t>, std::allocator<std::pair<pg_t const, PG::Query> > >, std::less<int>, std::allocator<std::pair<int const, std::map<pg_t, PG::Query, std::less<pg_t>, std::allocator<std::pair<pg_t const, PG::Query> > > > > >&, std::map<int, MOSDPGInfo*, std::less<int>, std::allocator<std::pair<int const, MOSDPGInfo*> > >*)+0x2546) [0x699026]
 2: (PG::RecoveryState::Active::Active(boost::statechart::state<PG::RecoveryState::Active, PG::RecoveryState::Primary, boost::mpl::list<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, (boost::statechart::history_mode)0>::my_context)+0x278) [0x6998d8]
 3: (boost::statechart::state<PG::RecoveryState::Active, PG::RecoveryState::Primary, boost::mpl::list<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, (boost::statechart::history_mode)0>::shallow_construct(boost::intrusive_ptr<PG::RecoveryState::Primary> const&, boost::statechart::state_machine<PG::RecoveryState::RecoveryMachine, PG::RecoveryState::Initial, std::allocator<void>, boost::statechart::null_exception_translator>&)+0x5d) [0x6b26fd]
 4: (boost::statechart::detail::safe_reaction_result boost::statechart::simple_state<PG::RecoveryState::Peering, PG::RecoveryState::Primary, PG::RecoveryState::GetInfo, (boost::statechart::history_mode)0>::transit<PG::RecoveryState::Active>()+0xac) [0x6b293c]
 5: (boost::statechart::simple_state<PG::RecoveryState::Peering, PG::RecoveryState::Primary, PG::RecoveryState::GetInfo, (boost::statechart::history_mode)0>::react_impl(boost::statechart::event_base const&, void const*)+0xfd) [0x6b2bad]
 6: (boost::statechart::simple_state<PG::RecoveryState::GetMissing, PG::RecoveryState::Peering, boost::mpl::list<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, (boost::statechart::history_mode)0>::react_impl(boost::statechart::event_base const&, void const*)+0xd9) [0x6b02e9]
 7: (boost::statechart::state_machine<PG::RecoveryState::RecoveryMachine, PG::RecoveryState::Initial, std::allocator<void>, boost::statechart::null_exception_translator>::process_queued_events()+0xeb) [0x52953b]
 8: (PG::RecoveryState::handle_log(int, MOSDPGLog*, PG::RecoveryCtx*)+0x165) [0x66efb5]
 9: (OSD::handle_pg_log(MOSDPGLog*)+0x495) [0x57a7a5]
 10: (OSD::_dispatch(Message*)+0x588) [0x590f88]
 11: (OSD::ms_dispatch(Message*)+0x12d) [0x591ffd]
 12: (SimpleMessenger::dispatch_entry()+0x7ab) [0x640cdb]
 13: (SimpleMessenger::DispatchThread::entry()+0x1c) [0x4c608c]
 14: (()+0x6d8c) [0x7f30d4cb5d8c]
 15: (clone()+0x6d) [0x7f30d32f204d]

From Martin, on the mailing list, with a log.