Hello, I'm unable to figure out the issue by just looking at the backtrace. You might be hitting https://bugzilla.redhat.com/show_bug.cgi?id=1650115. If you come across the same problem in future, please capture pstack output and share it with us.
On Mon, Apr 8, 2019 at 2:31 PM Zhou, Cynthia (NSB - CN/Hangzhou) < [email protected]> wrote: > Hi, > > The env is not there anymore, but I have collected the thread stack trace > of glusterd with command “thread apply all bt” > > Using host libthread_db library "/lib64/libthread_db.so.1". > > 0x00007f9ee9fcfa3d in __pthread_timedjoin_ex () from /lib64/libpthread.so.0 > > Missing separate debuginfos, use: dnf debuginfo-install > rcp-pack-glusterfs-1.12.0_1_gc999db1-RCP2.wf29.x86_64 > > (gdb) thread apply all bt > > > > Thread 9 (Thread 0x7f9edf7fe700 (LWP 1933)): > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > #1 0x00007f9ee9fda657 in __lll_lock_elision () from /lib64/libpthread.so.0 > > #2 0x00007f9eeb24cae6 in iobref_unref (iobref=0x7f9ed00063b0) at > iobuf.c:944 > > #3 0x00007f9eeafd2f29 in rpc_transport_pollin_destroy > (pollin=0x7f9ed00452d0) at rpc-transport.c:123 > > #4 0x00007f9ee4fbf319 in socket_event_poll_in (this=0x7f9ed0049cc0, > notify_handled=_gf_true) at socket.c:2322 > > #5 0x00007f9ee4fbf932 in socket_event_handler (fd=36, idx=27, gen=4, > data=0x7f9ed0049cc0, poll_in=1, poll_out=0, poll_err=0) at socket.c:2471 > > #6 0x00007f9eeb2825d4 in event_dispatch_epoll_handler > (event_pool=0x17feb00, event=0x7f9edf7fde84) at event-epoll.c:583 > > #7 0x00007f9eeb2828ab in event_dispatch_epoll_worker (data=0x180d0c0) at > event-epoll.c:659 > > #8 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #9 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 8 (Thread 0x7f9edffff700 (LWP 1932)): > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > #1 0x00007f9ee9fd2b42 in __pthread_mutex_cond_lock () from > /lib64/libpthread.so.0 > > #2 0x00007f9ee9fd44a8 in pthread_cond_wait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > > #3 0x00007f9ee4fbadab in socket_event_poll_err (this=0x7f9ed0049cc0, > gen=4, idx=27) at socket.c:1201 > > #4 0x00007f9ee4fbf99c in socket_event_handler (fd=36, idx=27, gen=4, > data=0x7f9ed0049cc0, poll_in=1, poll_out=0, poll_err=0) at socket.c:2480 > > #5 0x00007f9eeb2825d4 in event_dispatch_epoll_handler > (event_pool=0x17feb00, event=0x7f9edfffee84) at event-epoll.c:583 > > #6 0x00007f9eeb2828ab in event_dispatch_epoll_worker (data=0x180cf20) at > event-epoll.c:659 > > #7 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #8 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 7 (Thread 0x7f9ee49b3700 (LWP 1931)): > > #0 0x00007f9ee9fd45bc in pthread_cond_wait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > > #1 0x00007f9ee5e651b9 in hooks_worker (args=0x1813000) at > glusterd-hooks.c:529 > > #2 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #3 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 6 (Thread 0x7f9ee692e700 (LWP 1762)): > > #0 0x00007f9ee9fd497a in pthread_cond_timedwait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > > #1 0x00007f9eeb25d904 in syncenv_task (proc=0x1808e00) at syncop.c:603 > > #2 0x00007f9eeb25db9f in syncenv_processor (thdata=0x1808e00) at > syncop.c:695 > > #3 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #4 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 5 (Thread 0x7f9ee712f700 (LWP 1761)): > > ---Type <return> to continue, or q <return> to quit--- > > #0 0x00007f9ee9fd497a in pthread_cond_timedwait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > > #1 0x00007f9eeb25d904 in syncenv_task (proc=0x1808a40) at syncop.c:603 > > #2 0x00007f9eeb25db9f in syncenv_processor (thdata=0x1808a40) at > syncop.c:695 > > #3 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #4 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 4 (Thread 0x7f9ee7930700 (LWP 1760)): > > #0 0x00007f9ee98725d0 in nanosleep () from /lib64/libc.so.6 > > #1 0x00007f9ee98724aa in sleep () from /lib64/libc.so.6 > > #2 0x00007f9eeb247fdf in pool_sweeper (arg=0x0) at mem-pool.c:481 > > #3 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #4 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 3 (Thread 0x7f9ee8131700 (LWP 1759)): > > #0 0x00007f9ee97e3d7c in sigtimedwait () from /lib64/libc.so.6 > > #1 0x00007f9ee9fd8bac in sigwait () from /lib64/libpthread.so.0 > > #2 0x0000000000409ed7 in glusterfs_sigwaiter () > > #3 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #4 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 2 (Thread 0x7f9ee8932700 (LWP 1758)): > > #0 0x00007f9ee9fd83b0 in nanosleep () from /lib64/libpthread.so.0 > > #1 0x00007f9eeb224545 in gf_timer_proc (data=0x1808580) at timer.c:164 > > #2 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #3 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 1 (Thread 0x7f9eeb707780 (LWP 1757)): > > #0 0x00007f9ee9fcfa3d in __pthread_timedjoin_ex () from > /lib64/libpthread.so.0 > > #1 0x00007f9eeb282b09 in event_dispatch_epoll (event_pool=0x17feb00) at > event-epoll.c:746 > > #2 0x00007f9eeb246786 in event_dispatch (event_pool=0x17feb00) at > event.c:124 > > #3 0x000000000040ab95 in main () > > (gdb) > > (gdb) > > (gdb) q! > > A syntax error in expression, near `'. > > (gdb) quit > > > > *From:* Sanju Rakonde <[email protected]> > *Sent:* Monday, April 08, 2019 4:58 PM > *To:* Zhou, Cynthia (NSB - CN/Hangzhou) <[email protected]> > *Cc:* Raghavendra Gowdappa <[email protected]>; > [email protected] > *Subject:* Re: [Gluster-devel] glusterd stuck for glusterfs with version > 3.12.15 > > > > Can you please capture output of "pstack $(pidof glusterd)" and send it to > us? We need to capture this information when glusterd is struck. > > > > On Mon, Apr 8, 2019 at 8:05 AM Zhou, Cynthia (NSB - CN/Hangzhou) < > [email protected]> wrote: > > Hi glusterfs experts, > > Good day! > > In my test env, sometimes glusterd stuck issue happened, and it is not > responding to any gluster commands, when I checked this issue I find that > glusterd thread 9 and thread 8 is dealing with the same socket, I thought > following patch should be able to solve this issue, however after I merged > this patch this issue still exist. When I looked into this code, it seems > socket_event_poll_in called event_handled before > rpc_transport_pollin_destroy, I think this gives the chance for another > poll for the exactly the same socket. And caused this glusterd stuck issue, > also, I find there is no LOCK_DESTROY(&iobref->lock) > > In iobref_destroy, I think it is better to add destroy lock. > > Following is the gdb info when this issue happened, I would like to know > your opinion on this issue, thanks! > > > > SHA-1: f747d55a7fd364e2b9a74fe40360ab3cb7b11537 > > > > ** socket: fix issue on concurrent handle of a socket* > > > > > > > > *GDB INFO:* > > Thread 8 is blocked on pthread_cond_wait, and thread 9 is blocked in > iobref_unref, I think > > Thread 9 (Thread 0x7f9edf7fe700 (LWP 1933)): > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > #1 0x00007f9ee9fda657 in __lll_lock_elision () from /lib64/libpthread.so.0 > > #2 0x00007f9eeb24cae6 in iobref_unref (iobref=0x7f9ed00063b0) at > iobuf.c:944 > > #3 0x00007f9eeafd2f29 in rpc_transport_pollin_destroy > (pollin=0x7f9ed00452d0) at rpc-transport.c:123 > > #4 0x00007f9ee4fbf319 in socket_event_poll_in (this=0x7f9ed0049cc0, > notify_handled=_gf_true) at socket.c:2322 > > #5 0x00007f9ee4fbf932 in socket_event_handler (*fd=36, idx=27, gen=4, > data=0x7f9ed0049cc0, poll_in=1, poll_out=0, poll_err=0*) at socket.c:2471 > > #6 0x00007f9eeb2825d4 in event_dispatch_epoll_handler > (event_pool=0x17feb00, event=0x7f9edf7fde84) at event-epoll.c:583 > > #7 0x00007f9eeb2828ab in event_dispatch_epoll_worker (data=0x180d0c0) at > event-epoll.c:659 > > #8 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #9 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > Thread 8 (Thread 0x7f9edffff700 (LWP 1932)): > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > #1 0x00007f9ee9fd2b42 in __pthread_mutex_cond_lock () from > /lib64/libpthread.so.0 > > #2 0x00007f9ee9fd44a8 in pthread_cond_wait@@GLIBC_2.3.2 () from > /lib64/libpthread.so.0 > > #3 0x00007f9ee4fbadab in socket_event_poll_err (this=0x7f9ed0049cc0, > gen=4, idx=27) at socket.c:1201 > > #4 0x00007f9ee4fbf99c in socket_event_handler (*fd=36, idx=27, gen=4, > data=0x7f9ed0049cc0, poll_in=1, poll_out=0, poll_err=0*) at socket.c:2480 > > #5 0x00007f9eeb2825d4 in event_dispatch_epoll_handler > (event_pool=0x17feb00, event=0x7f9edfffee84) at event-epoll.c:583 > > #6 0x00007f9eeb2828ab in event_dispatch_epoll_worker (data=0x180cf20) at > event-epoll.c:659 > > #7 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #8 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > > > (gdb) thread 9 > > [Switching to thread 9 (Thread 0x7f9edf7fe700 (LWP 1933))] > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > (gdb) bt > > #0 0x00007f9ee9fd785c in __lll_lock_wait () from /lib64/libpthread.so.0 > > #1 0x00007f9ee9fda657 in __lll_lock_elision () from /lib64/libpthread.so.0 > > #2 0x00007f9eeb24cae6 in iobref_unref (iobref=0x7f9ed00063b0) at > iobuf.c:944 > > #3 0x00007f9eeafd2f29 in rpc_transport_pollin_destroy > (pollin=0x7f9ed00452d0) at rpc-transport.c:123 > > #4 0x00007f9ee4fbf319 in socket_event_poll_in (this=0x7f9ed0049cc0, > notify_handled=_gf_true) at socket.c:2322 > > #5 0x00007f9ee4fbf932 in socket_event_handler (fd=36, idx=27, gen=4, > data=0x7f9ed0049cc0, poll_in=1, poll_out=0, poll_err=0) at socket.c:2471 > > #6 0x00007f9eeb2825d4 in event_dispatch_epoll_handler > (event_pool=0x17feb00, event=0x7f9edf7fde84) at event-epoll.c:583 > > #7 0x00007f9eeb2828ab in event_dispatch_epoll_worker (data=0x180d0c0) at > event-epoll.c:659 > > #8 0x00007f9ee9fce5da in start_thread () from /lib64/libpthread.so.0 > > #9 0x00007f9ee98a4eaf in clone () from /lib64/libc.so.6 > > (gdb) frame 2 > > #2 0x00007f9eeb24cae6 in iobref_unref (iobref=0x7f9ed00063b0) at > iobuf.c:944 > > 944 iobuf.c: No such file or directory. > > (gdb) print *iobref > > $1 = {lock = {spinlock = 2, mutex = {__data = {__lock = 2, __count = 222, > __owner = -2120437760, __nusers = 1, __kind = 8960, __spins = 512, > > __elision = 0, __list = {__prev = 0x4000, __next = > 0x7f9ed00063b000}}, > > __size = > "\002\000\000\000\336\000\000\000\000\260\234\201\001\000\000\000\000#\000\000\000\002\000\000\000@ > \000\000\000\000\000\000\000\260c\000О\177", __align = 953482739714}}, > ref = -256, iobrefs = 0xffffffffffffffff, alloced = -1, used = -1} > > (gdb) quit > > A debugging session is active. > > _______________________________________________ > Gluster-devel mailing list > [email protected] > https://lists.gluster.org/mailman/listinfo/gluster-devel > > > > > -- > > Thanks, > > Sanju > -- Thanks, Sanju
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