Full_Name: Duncan Idaho Version: 2.4.25 OS: Centos 5.5 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (216.148.0.72)

We are running a cluster of "synchronization hosts" that act as Producers for a large number of Consumers and additionally Consume from a single global read/write master. After several weeks of stable operation synchronization came to a halt on both nodes in the Producer/Consumer cluster simultaneously.

Stack-trace:

Thread 15 (Thread 10745): #0 0x000000322ea07b35 in pthread_join () from /lib64/libpthread.so.0 #1 0x000000000041929d in slapd_daemon () at daemon.c:2922 #2 0x000000000040730e in main (argc=<value optimized out>, argv=0x7fffd2567cb8) at main.c:983

Thread 14 (Thread 8866): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 13 (Thread 14876): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x471a9d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x471a9d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 12 (Thread 14875): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 11 (Thread 14874): #0 0x000000322ea0d605 in __lll_unlock_wake () from /lib64/libpthread.so.0 #1 0x000000322ea0a0e7 in _L_unlock_766 () from /lib64/libpthread.so.0 #2 0x000000322ea0a04e in pthread_mutex_unlock () from /lib64/libpthread.so.0 #3 0x00000000004d7e5e in syncprov_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at syncprov.c:2471 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x461a7d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x461a7d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 10 (Thread 14873): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:217

...back 1 page

Thread 15 (Thread 10745): #0 0x000000322ea07b35 in pthread_join () from /lib64/libpthread.so.0 #1 0x000000000041929d in slapd_daemon () at daemon.c:2922 #2 0x000000000040730e in main (argc=<value optimized out>, argv=0x7fffd2567cb8) at main.c:983

Thread 14 (Thread 8866): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 13 (Thread 14876): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x471a9d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x471a9d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 12 (Thread 14875): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 11 (Thread 14874): #0 0x000000322ea0d605 in __lll_unlock_wake () from /lib64/libpthread.so.0 #1 0x000000322ea0a0e7 in _L_unlock_766 () from /lib64/libpthread.so.0 #2 0x000000322ea0a04e in pthread_mutex_unlock () from /lib64/libpthread.so.0 #3 0x00000000004d7e5e in syncprov_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at syncprov.c:2471 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x461a7d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x461a7d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 10 (Thread 14873): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:217 [root@su1-admin-syncrepl01 ldap]# cat gdb.txt

Thread 15 (Thread 10745): #0 0x000000322ea07b35 in pthread_join () from /lib64/libpthread.so.0 #1 0x000000000041929d in slapd_daemon () at daemon.c:2922 #2 0x000000000040730e in main (argc=<value optimized out>, argv=0x7fffd2567cb8) at main.c:983

Thread 14 (Thread 8866): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 13 (Thread 14876): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac06ab4a0, rs=0x471a9c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac06ab4a0, rs=0x471a9c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x471a9d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x471a9d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 12 (Thread 14875): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00000000004ec695 in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:672 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Thread 11 (Thread 14874): #0 0x000000322ea0d605 in __lll_unlock_wake () from /lib64/libpthread.so.0 #1 0x000000322ea0a0e7 in _L_unlock_766 () from /lib64/libpthread.so.0 #2 0x000000322ea0a04e in pthread_mutex_unlock () from /lib64/libpthread.so.0 #3 0x00000000004d7e5e in syncprov_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at syncprov.c:2471 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaac0897eb0, rs=0x461a7c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaac0897eb0, rs=0x461a7c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x461a7d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x461a7d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 10 (Thread 14873): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaab82b63c0, rs=0x459a6c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaab82b63c0, rs=0x459a6c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x459a6d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x459a6d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 9 (Thread 14872): #0 0x000000322ea0d4c4 in __lll_lock_wait () from /lib64/libpthread.so.0 #1 0x000000322ea08e1a in _L_lock_1034 () from /lib64/libpthread.so.0 #2 0x000000322ea08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0 #3 0x00000000004d7e48 in syncprov_op_search (op=0x2aaab89e58c0, rs=0x451a5c10) at syncprov.c:2476 #4 0x000000000047e64a in overlay_op_walk (op=0x2aaab89e58c0, rs=0x451a5c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2aaab89e58c0, rs=0x451a5c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2aaab89e58c0, rs=0x451a5c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2aaab89e58c0, rs=0x451a5c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x451a5d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x451a5d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 8 (Thread 16034): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x000000000042db1c in send_ldap_ber (op=<value optimized out>, ber=0x449a43f0) at result.c:372 #2 0x00000000004308d8 in slap_send_search_entry (op=0x449a45a0, rs=0x449a4af0) at result.c:1410 #3 0x00000000004da80d in syncprov_qplay (ctx=<value optimized out>, arg=<value optimized out>) at syncprov.c:884 #4 syncprov_qtask (ctx=<value optimized out>, arg=<value optimized out>) at syncprov.c:1006 #5 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #6 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #7 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #8 0x0000000000000000 in ?? ()

Thread 7 (Thread 16033): #0 0x000000322ea0d605 in __lll_unlock_wake () from /lib64/libpthread.so.0 #1 0x000000322ea0a0e7 in _L_unlock_766 () from /lib64/libpthread.so.0 #2 0x000000322ea0a04e in pthread_mutex_unlock () from /lib64/libpthread.so.0 #3 0x00000000004d7e5e in syncprov_op_search (op=0x2d554b70, rs=0x441a3c10) at syncprov.c:2471 #4 0x000000000047e64a in overlay_op_walk (op=0x2d554b70, rs=0x441a3c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #5 0x000000000047ec27 in over_op_func (op=0x2d554b70, rs=0x441a3c10, which=op_search) at backover.c:721 #6 0x0000000000420a79 in fe_op_search (op=0x2d554b70, rs=0x441a3c10) at search.c:372 #7 0x0000000000421217 in do_search (op=0x2d554b70, rs=0x441a3c10) at search.c:217 #8 0x000000000041e965 in connection_operation (ctx=0x441a3d60, arg_v=<value optimized out>) at connection.c:1113 #9 0x000000000041f23c in connection_read_thread (ctx=0x441a3d60, argv=<value optimized out>) at connection.c:1249 #10 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #11 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #12 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #13 0x0000000000000000 in ?? ()

Thread 6 (Thread 11937): #0 0x000000322e2baa27 in sched_yield () from /lib64/libc.so.6 #1 0x00000000004d7e7f in syncprov_op_search (op=0x2aaab802af20, rs=0x418f7c10) at syncprov.c:2475 #2 0x000000000047e64a in overlay_op_walk (op=0x2aaab802af20, rs=0x418f7c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #3 0x000000000047ec27 in over_op_func (op=0x2aaab802af20, rs=0x418f7c10, which=op_search) at backover.c:721 #4 0x0000000000420a79 in fe_op_search (op=0x2aaab802af20, rs=0x418f7c10) at search.c:372 #5 0x0000000000421217 in do_search (op=0x2aaab802af20, rs=0x418f7c10) at search.c:217 #6 0x000000000041e965 in connection_operation (ctx=0x418f7d60, arg_v=<value optimized out>) at connection.c:1113 #7 0x000000000041f23c in connection_read_thread (ctx=0x418f7d60, argv=<value optimized out>) at connection.c:1249 #8 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #9 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #10 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #11 0x0000000000000000 in ?? ()

Thread 5 (Thread 10755): #0 0x000000322ea0aee9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00002b1d8ae85bd1 in __db_pthread_mutex_lock () from /usr/local/openldap/lib/libdb-5.1.so #2 0x00002b1d8ae8528a in __db_tas_mutex_lock () from /usr/local/openldap/lib/libdb-5.1.so #3 0x00002b1d8af1804c in __lock_get_internal () from /usr/local/openldap/lib/libdb-5.1.so #4 0x00002b1d8af189ea in __lock_vec () from /usr/local/openldap/lib/libdb-5.1.so #5 0x00002b1d8af1969b in __lock_vec_pp () from /usr/local/openldap/lib/libdb-5.1.so #6 0x00000000004bc6c1 in hdb_cache_entry_db_relock (bdb=0xe2bc780, txn=<value optimized out>, ei=0x2aaadaefc6a0, rw=1, tryOnly=<value optimized out>, lock=0x439a1640) at cache.c:198 #7 0x00000000004bcb70 in hdb_cache_modify (bdb=0x2b1d8f0fa00c, e=0x2b1df490e138, newAttrs=0x2b1e071d6918, txn=0x0, lock=0x0) at cache.c:1231 #8 0x0000000000495d13 in hdb_modify (op=0x439a2120, rs=0x439a1cb0) at modify.c:662 #9 0x000000000047e6c2 in overlay_op_walk (op=0x439a2120, rs=0x439a1cb0, which=op_modify, oi=0xe2be010, on=0x0) at backover.c:669 #10 0x000000000047ec27 in over_op_func (op=0x439a2120, rs=0x439a1cb0, which=op_modify) at backover.c:721 #11 0x000000000047240f in syncrepl_entry (si=0xe2c2800, op=0x439a2120, entry=0x2b1df490e408, modlist=0x439a2c68, syncstate=2, syncUUID=<value optimized out>, syncCSN=0x2aaade6b6ab0) at syncrepl.c:2694 #12 0x0000000000479cf7 in do_syncrep2 (ctx=<value optimized out>, arg=<value optimized out>) at syncrepl.c:955 #13 do_syncrepl (ctx=<value optimized out>, arg=<value optimized out>) at syncrepl.c:1455 #14 0x000000000041f7ca in connection_read_thread (ctx=0x439a2d60, argv=<value optimized out>) at connection.c:1251 #15 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #16 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #17 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #18 0x0000000000000000 in ?? ()

Thread 4 (Thread 10752): #0 0x000000322e2baa27 in sched_yield () from /lib64/libc.so.6 #1 0x00000000004d7e7f in syncprov_op_search (op=0xe6f0990, rs=0x410f6c10) at syncprov.c:2475 #2 0x000000000047e64a in overlay_op_walk (op=0xe6f0990, rs=0x410f6c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #3 0x000000000047ec27 in over_op_func (op=0xe6f0990, rs=0x410f6c10, which=op_search) at backover.c:721 #4 0x0000000000420a79 in fe_op_search (op=0xe6f0990, rs=0x410f6c10) at search.c:372 #5 0x0000000000421217 in do_search (op=0xe6f0990, rs=0x410f6c10) at search.c:217 #6 0x000000000041e965 in connection_operation (ctx=0x410f6d60, arg_v=<value optimized out>) at connection.c:1113 #7 0x000000000041f23c in connection_read_thread (ctx=0x410f6d60, argv=<value optimized out>) at connection.c:1249 #8 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #9 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #10 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #11 0x0000000000000000 in ?? ()

Thread 3 (Thread 10749): #0 0x000000322e2baa27 in sched_yield () from /lib64/libc.so.6 #1 0x00000000004d7e7f in syncprov_op_search (op=0xe5eefa0, rs=0x431a1c10) at syncprov.c:2475 #2 0x000000000047e64a in overlay_op_walk (op=0xe5eefa0, rs=0x431a1c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #3 0x000000000047ec27 in over_op_func (op=0xe5eefa0, rs=0x431a1c10, which=op_search) at backover.c:721 #4 0x0000000000420a79 in fe_op_search (op=0xe5eefa0, rs=0x431a1c10) at search.c:372 #5 0x0000000000421217 in do_search (op=0xe5eefa0, rs=0x431a1c10) at search.c:217 #6 0x000000000041e965 in connection_operation (ctx=0x431a1d60, arg_v=<value optimized out>) at connection.c:1113 #7 0x000000000041f23c in connection_read_thread (ctx=0x431a1d60, argv=<value optimized out>) at connection.c:1249 #8 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #9 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #10 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #11 0x0000000000000000 in ?? ()

Thread 2 (Thread 10748): #0 0x000000322e2baa27 in sched_yield () from /lib64/libc.so.6 #1 0x00000000004d7e7f in syncprov_op_search (op=0xe5ebbf0, rs=0x429a0c10) at syncprov.c:2475 #2 0x000000000047e64a in overlay_op_walk (op=0xe5ebbf0, rs=0x429a0c10, which=op_search, oi=0xe2be010, on=0xe2c30b0) at backover.c:659 #3 0x000000000047ec27 in over_op_func (op=0xe5ebbf0, rs=0x429a0c10, which=op_search) at backover.c:721 #4 0x0000000000420a79 in fe_op_search (op=0xe5ebbf0, rs=0x429a0c10) at search.c:372 #5 0x0000000000421217 in do_search (op=0xe5ebbf0, rs=0x429a0c10) at search.c:217 #6 0x000000000041e965 in connection_operation (ctx=0x429a0d60, arg_v=<value optimized out>) at connection.c:1113 #7 0x000000000041f23c in connection_read_thread (ctx=0x429a0d60, argv=<value optimized out>) at connection.c:1249 #8 0x00000000004ec63c in ldap_int_thread_pool_wrapper (xpool=0xe232120) at tpool.c:685 #9 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #10 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #11 0x0000000000000000 in ?? ()

Thread 1 (Thread 10747): #0 0x000000322e2d4108 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000041bc8b in slapd_daemon_task (ptr=<value optimized out>) at daemon.c:2528 #2 0x000000322ea0673d in start_thread () from /lib64/libpthread.so.0 #3 0x000000322e2d3d1d in clone () from /lib64/libc.so.6 #4 0x0000000000000000 in ?? ()

Logs at the time of the lock-up:

Producer: Jul 28 22:27:08 admin02 slapd[5178]: conn=422733 op=92 MOD dn="thing=thing1,ou=things,dc=example,dc=net" Jul 28 22:27:08 admin02 slapd[5178]: conn=422733 op=92 MOD attr=stuff Jul 28 22:27:08 admin02 slapd[5178]: slap_queue_csn: queing 0x4b0883f0 20110728222708.058275Z#000000#000#000000 Jul 28 22:27:08 admin02 slapd[5178]: syncprov_sendresp: cookie=rid=001 ,csn=20110728222708.058275Z#000000#000#000000 Jul 28 22:27:08 admin02 slapd[5178]: syncprov_sendresp: cookie=rid=001

Producer later: Jul 29 07:04:55 admin02 slapd[5178]: Entry thing=thing1,ou=things,dc=example,dc=net CSN 20110728222708.058275Z#000000#000#000000 older or equal to ctx 20110728222708.058275Z#000000#000#000000

Producer/Consumer: Jul 28 22:27:08 su1-admin-syncrepl01 slapd[10745]: do_syncrep2: rid=001 cookie=rid=001,csn=20110728222708.058275Z#000000#000#000000 Jul 28 22:27:08 su1-admin-syncrepl01 slapd[10745]: slap_queue_csn: queing 0x2aaadecf4b00 20110728222708.058275Z#000000#000#000000

^^ No more syncrepl logs after this

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