Hi Igor, unfortunately same result: # ceph config dump WHO   MASK LEVEL OPTION            VALUE      RO   osd      basic osd_memory_target 2147483648    # /usr/bin/ceph-osd -d --cluster ceph --id 0 --setuser ceph --setgroup ceph ....      0> 2020-01-23 10:48:04.436 7fc61b5b5c80 -1 *** Caught signal (Aborted) **  in thread 7fc61b5b5c80 thread_name:ceph-osd  ceph version 14.2.6 (f0aa067ac7a02ee46ea48aa26c6e298b5ea272e9) nautilus (stable)  1: (()+0x12730) [0x7fc61c05d730]  2: (gsignal()+0x10b) [0x7fc61bb417bb]  3: (abort()+0x121) [0x7fc61bb2c535]  4: (()+0x8c983) [0x7fc61bef4983]  5: (()+0x928c6) [0x7fc61befa8c6]  6: (()+0x92901) [0x7fc61befa901]  7: (()+0x92b34) [0x7fc61befab34]  8: (()+0x5a3f53) [0x55ecdabb2f53]  9: (Option::size_t const md_config_t::get_val<Option::size_t>(ConfigValues const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const+0x81) [0x55ecdabb8c91]  10: (BlueStore::_set_cache_sizes()+0x15a) [0x55ecdb033d8a]  11: (BlueStore::_open_bdev(bool)+0x173) [0x55ecdb036b23]  12: (BlueStore::get_devices(std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*)+0xef) [0x55ecdb09d7ef]  13: (BlueStore::get_numa_node(int*, std::set<int, std::less<int>, std::allocator<int> >*, std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*)+0x7b) [0x55ecdb04571b]  14: (main()+0x2870) [0x55ecdab80440]  15: (__libc_start_main()+0xeb) [0x7fc61bb2e09b]  16: (_start()+0x2a) [0x55ecdabb2c6a]  NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this. .... Best Regards, Martin Dne 22. 01. 20 v 16:33 Igor Fedotov napsal(a):

Hi Martin,

looks like a bug to me.

You might want to remove all custom settings from config database and try to set osd-memory-target only.

Would it help?

Thanks,

Igor

On 1/22/2020 3:43 PM, Martin Mlynář wrote:

...

Dne 21. 01. 20 v 21:12 Stefan Kooman napsal(a):

...

Quoting Martin Mlynář (nexus+ceph@smoula.net):

...

Do you think this could help? OSD does not even start, I'm getting a little lost how flushing caches could help. I might have mis-understood. I though the OSDs crashed when you set the config setting.

...

According to trace I suspect something around processing config values. I've just set the same config setting on a test cluster and restarted an OSD without problem. So, not sure what is going on there.

Gr. Stefan

I've compiled ceph-osd with debug symbols and got better backtrace:

   -24> 2020-01-22 13:12:53.614 7f83ed064700  4 set_mon_vals no callback set    -23> 2020-01-22 13:12:53.614 7f83ee867700 10 monclient: discarding stray monitor message auth_reply(proto 2 0 (0) Success) v1    -22> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_crush_update_on_start = true    -21> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_max_backfills = 64    -20> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_memory_target = 2147483648    -19> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_recovery_max_active = 40    -18> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_recovery_max_single_start = 1000    -17> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_recovery_sleep_hdd = 0.000000    -16> 2020-01-22 13:12:53.614 7f83ed064700 10 set_mon_vals osd_recovery_sleep_hybrid = 0.000000    -15> 2020-01-22 13:12:53.627 7f83f0276c40  0 set uid:gid to 64045:64045 (ceph:ceph)    -14> 2020-01-22 13:12:53.627 7f83f0276c40  0 ceph version 14.2.6 (f0aa067ac7a02ee46ea48aa26c6e298b5ea272e9) nautilus (stable), process ceph-osd, pid 1111622    -13> 2020-01-22 13:12:53.649 7f83f0276c40  0 pidfile_write: ignore empty --pid-file    -12> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) init /var/run/ceph/ceph-osd.6.asok    -11> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) bind_and_listen /var/run/ceph/ceph-osd.6.asok    -10> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) register_command 0 hook 0x558051872fc0     -9> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) register_command version hook 0x558051872fc0     -8> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) register_command git_version hook 0x558051872fc0     -7> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) register_command help hook 0x558051874220     -6> 2020-01-22 13:12:53.657 7f83f0276c40  5 asok(0x5580518fa000) register_command get_command_descriptions hook 0x558051874260     -5> 2020-01-22 13:12:53.657 7f83ed865700  5 asok(0x5580518fa000) entry start     -4> 2020-01-22 13:12:53.670 7f83f0276c40  5 object store type is bluestore     -3> 2020-01-22 13:12:53.675 7f83f0276c40  1 bdev create path /var/lib/ceph/osd/ceph-6/block type kernel     -2> 2020-01-22 13:12:53.675 7f83f0276c40  1 bdev(0x5580518f3f80 /var/lib/ceph/osd/ceph-6/block) open path /var/lib/ceph/osd/ceph-6/block     -1> 2020-01-22 13:12:53.675 7f83f0276c40  1 bdev(0x5580518f3f80 /var/lib/ceph/osd/ceph-6/block) open size 3000588304384 (0x2baa1000000, 2.7 TiB) block_size 4096 (4 KiB) rotational discard not supported      0> 2020-01-22 13:12:53.714 7f83f0276c40 -1 *** Caught signal (Aborted) **  in thread 7f83f0276c40 thread_name:ceph-osd

 ceph version 14.2.6 (f0aa067ac7a02ee46ea48aa26c6e298b5ea272e9) nautilus (stable)  1: (()+0x2c19654) [0x558045ec6654]  2: (()+0x12730) [0x7f83f0d1f730]  3: (gsignal()+0x10b) [0x7f83f08027bb]  4: (abort()+0x121) [0x7f83f07ed535]  5: (()+0x8c983) [0x7f83f0bb5983]  6: (()+0x928c6) [0x7f83f0bbb8c6]  7: (()+0x92901) [0x7f83f0bbb901]  8: (()+0x92b34) [0x7f83f0bbbb34] * 9: (void boost::throw_exception<boost::bad_get>(boost::bad_get const&)+0x7b) [0x5580454d5430]* * 10: (Option::size_t&& boost::relaxed_get<Option::size_t, boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>(boost::variant<boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>&&)+0x5b) [0x5580454d6223]*  11: (Option::size_t&& boost::strict_get<Option::size_t, boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>(boost::variant<boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>&&)+0x20) [0x5580454d4a39]  12: (Option::size_t&& boost::get<Option::size_t, boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>(boost::variant<boost::blank, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned long, long, double, bool, entity_addr_t, entity_addrvec_t, std::chrono::duration<long, std::ratio<1l, 1l> >, Option::size_t, uuid_d>&&)+0x20) [0x5580454d1ed7]  13: (Option::size_t const md_config_t::get_val<Option::size_t>(ConfigValues const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const+0x48) [0x5580454ce882]  14: (Option::size_t const ConfigProxy::get_val<Option::size_t>(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const+0x58) [0x5580454cb9b8]  15: (BlueStore::_set_cache_sizes()+0x159) [0x558045ce2213]  16: (BlueStore::_open_bdev(bool)+0x301) [0x558045ce6be3]  17: (BlueStore::get_devices(std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*)+0xf9) [0x558045d0f16d]  18: (BlueStore::get_numa_node(int*, std::set<int, std::less<int>, std::allocator<int> >*, std::set<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >*)+0x79) [0x558045d0eb55]  19: (main()+0x3aae) [0x5580454c2460]  20: (__libc_start_main()+0xeb) [0x7f83f07ef09b]  21: (_start()+0x2a) [0x5580454bda2a]  NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

And managed some gdb debugging (int BlueStore::_set_cache_sizes()):

(gdb) n 4116      cache_autotune_interval = (gdb) n 4117          cct->_conf.get_val<double>("bluestore_cache_autotune_interval"); (gdb) p cache_autotune_interval $3 = 5 (gdb) n 4118      osd_memory_target = cct->_conf.get_val<Option::size_t>("osd_memory_target"); (gdb) s std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string<std::allocator<char> > (this=0x7fffffffc140, __s=0x555558d26c2f "osd_memory_target", __a=...)     at /usr/include/c++/8/bits/basic_string.h:515 515          : _M_dataplus(_M_local_data(), __a) (gdb) n 516          { _M_construct(__s, __s ? __s + traits_type::length(__s) : __s+npos); } (gdb) terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::bad_get>

...

'   what():  boost::bad_get: failed value get using boost::get

But there I'm stuck. GDBing c++ code is a really dark sorcery for me.

Other get_vals look fine, maybe get_val<*Option::size_t*> is the problem? It looks like trouble outside of ceph - what system are you testing on? This is debian with official debian build from buster-backports. Maybe some of debian's patches?

-- Martin Mlynář

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