Ceph

(gdb) bt
#0  0x00007fd54b0dcb7b in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:42
#1  0x000000000063411c in reraise_fatal (signum=6) at global/signal_handler.cc:58
#2  handle_fatal_signal (signum=6) at global/signal_handler.cc:104
#3  <signal handler called>
#4  0x00007fd5497d1445 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#5  0x00007fd5497d4bab in __GI_abort () at abort.c:91
#6  0x00007fd54a11f69d in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fd54a11d846 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fd54a11d873 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#9  0x00007fd54a11d96e in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#10 0x00000000005713b2 in ceph::__ceph_assert_fail (assertion=0x6361b4 "!unclean", file=<optimized out>, line=1773, func=0x639820 "void Client::put_inode(Inode*, int)")
    at common/assert.cc:77
#11 0x000000000047bd7e in Client::put_inode (this=0xad2380, in=0x358d200, n=<optimized out>) at client/Client.cc:1773
#12 0x000000000047bfa7 in Client::_ll_put (this=0xad2380, in=0x358d200, num=12) at client/Client.cc:5763
#13 0x000000000047f17e in Client::ll_forget (this=0xad2380, vino=..., num=12) at client/Client.cc:5807
#14 0x00000000004712c0 in ceph_ll_forget (req=0xadb400, ino=<optimized out>, nlookup=12) at client/fuse_ll.cc:119
#15 0x00007fd54b2fad65 in fuse_session_loop () from /lib/libfuse.so.2
#16 0x00000000004715d3 in ceph_fuse_ll_main (c=<optimized out>, argc=<optimized out>, argv=<optimized out>, fd=<optimized out>) at client/fuse_ll.cc:612
#17 0x000000000046ebf1 in main (argc=2, argv=0xad6280, envp=<optimized out>) at ceph_fuse.cc:142
(gdb) f 11
#11 0x000000000047bd7e in Client::put_inode (this=0xad2380, in=0x358d200, n=<optimized out>) at client/Client.cc:1773
1773    client/Client.cc: No such file or directory.
(gdb) p in
$1 = (Inode *) 0x358d200
(gdb) p *in
$2 = {cct = 0xad8000, ino = {val = 1099511627947}, snapid = {val = 18446744073709551614}, rdev = 0, ctime = {tv = {tv_sec = 1341236125, tv_nsec = 724088000}}, mode = 33206, uid = 1000, 
  gid = 1000, nlink = 1, dir_layout = {dl_dir_hash = 16 '\020', dl_unused1 = 16 '\020', dl_unused2 = 4112, dl_unused3 = 269488144}, layout = {fl_stripe_unit = {v = 4194304}, 
    fl_stripe_count = {v = 1}, fl_object_size = {v = 4194304}, fl_cas_hash = {v = 0}, fl_object_stripe_unit = {v = 0}, fl_unused = {v = 4294967295}, fl_pg_pool = {v = 0}}, 
  size = 8388608, truncate_seq = 1, truncate_size = 18446744073709551615, mtime = {tv = {tv_sec = 1341236190, tv_nsec = 284482000}}, atime = {tv = {tv_sec = 1341236125, 
      tv_nsec = 723361000}}, time_warp_seq = 0, max_size = 33554432, dirstat = {<scatter_info_t> = {version = 0}, mtime = {tv = {tv_sec = 0, tv_nsec = 0}}, nfiles = 0, nsubdirs = 0}, 
  rstat = {<scatter_info_t> = {version = 0}, rctime = {tv = {tv_sec = 0, tv_nsec = 0}}, rbytes = 4683191, rfiles = 1, rsubdirs = 0, ranchors = 0, rsnaprealms = 0}, version = 959, 
  xattr_version = 0, flags = 0, dir_contacts = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<int> >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<int> >> = {<No data fields>}, <No data fields>}, 
        _M_key_compare = {<std::binary_function<int, int, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, _M_left = 0x358d308, 
          _M_right = 0x358d308}, _M_node_count = 0}}}, dir_hashed = false, dir_replicated = false, caps = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<int const, Cap*> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<int const, Cap*> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<int, int, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, 
          _M_left = 0x358d340, _M_right = 0x358d340}, _M_node_count = 0}}}, auth_cap = 0x0, dirty_caps = 0, flushing_caps = 0, flushing_cap_seq = 1524, flushing_cap_tid = {
    0 <repeats 12 times>, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0}, shared_gen = 1, cache_gen = 5, snap_caps = 0, snap_cap_refs = 0, exporting_issued = 0, exporting_mds = -1, exporting_mseq = 0, 
  hold_caps_until = {tv = {tv_sec = 1341236197, tv_nsec = 627888000}}, cap_item = {_item = 0x358d200, _prev = 0xdbcf50, _next = 0x0, _list = 0xad2650}, flushing_cap_item = {
    _item = 0x358d200, _prev = 0x0, _next = 0x0, _list = 0x0}, last_flush_tid = 15, snaprealm = 0x0, snaprealm_item = {_item = 0x358d200, _prev = 0x0, _next = 0x0, _list = 0x0}, 
  snapdir_parent = 0x0, cap_snaps = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<snapid_t const, CapSnap*> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<snapid_t const, CapSnap*> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<snapid_t, snapid_t, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, 
          _M_parent = 0x0, _M_left = 0x358d450, _M_right = 0x358d450}, _M_node_count = 0}}}, open_by_mode = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<int const, int> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<int const, int> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<int, int, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0xb350c0, 
          _M_left = 0x64b8e40, _M_right = 0xb350c0}, _M_node_count = 2}}}, cap_refs = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<int const, int> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<int const, int> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<int, int, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x22a8bd0, 
          _M_left = 0x618dbd0, _M_right = 0x4e70300}, _M_node_count = 4}}}, oset = {parent = 0x358d200, ino = {val = 1099511627947}, truncate_seq = 0, truncate_size = 0, poolid = 0, 
    objects = {_front = 0x1e8ae20, _back = 0x1e8ae20, _size = 1}, dirty_or_tx = 0}, reported_size = 8388608, wanted_max_size = 0, requested_max_size = 0, _ref = 0, ll_ref = 0, 
  dir = 0x0, dn_set = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<Dentry*> >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<Dentry*> >> = {<No data fields>}, <No data fields>}, 
        _M_key_compare = {<std::binary_function<Dentry*, Dentry*, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, 
          _M_left = 0x358d550, _M_right = 0x358d550}, _M_node_count = 0}}}, symlink = {static npos = <optimized out>, 
    _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x8ac138 ""}}, dirfragtree = {_splits = {_M_t = {
        _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<frag_t const, int> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<frag_t const, int> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<frag_t, frag_t, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, 
            _M_left = 0x358d588, _M_right = 0x358d588}, _M_node_count = 0}}}}, xattrs = {_M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, ceph::buffer::ptr> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<std::basic_string<char, std::char_traits<char>, std::allocator<char> > const, ceph::buffer::ptr> > >> = {<No data fields>}, <No data fields>}, 
        _M_key_compare = {<std::binary_function<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, _M_left = 0x358d5b8, _M_right = 0x358d5b8}, _M_node_count = 0}}}, fragmap = {
    _M_t = {
      _M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<frag_t const, int> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<frag_t const, int> > >> = {<No data fields>}, <No data fields>}, _M_key_compare = {<std::binary_function<frag_t, frag_t, bool>> = {<No data fields>}, <No data fields>}, _M_header = {_M_color = std::_S_red, _M_parent = 0x0, 
          _M_left = 0x358d5e8, _M_right = 0x358d5e8}, _M_node_count = 0}}}, waitfor_caps = {<std::_List_base<Cond*, std::allocator<Cond*> >> = {
      _M_impl = {<std::allocator<std::_List_node<Cond*> >> = {<__gnu_cxx::new_allocator<std::_List_node<Cond*> >> = {<No data fields>}, <No data fields>}, _M_node = {
          _M_next = 0x358d610, _M_prev = 0x358d610}}}, <No data fields>}, waitfor_commit = {<std::_List_base<Cond*, std::allocator<Cond*> >> = {
      _M_impl = {<std::allocator<std::_List_node<Cond*> >> = {<__gnu_cxx::new_allocator<std::_List_node<Cond*> >> = {<No data fields>}, <No data fields>}, _M_node = {
          _M_next = 0x358d620, _M_prev = 0x358d620}}}, <No data fields>}}

Do we think this bug is still there? Haven't seen it in quite a while. Could it have been related to 1638f6266863d6d4eee32c725dc10c94f5871b1e, the double put on hardlink?

The hard link bug was only expressed through the libcephfs API, not ceph-fuse.