deluge gets stuck when starting

[Mattias Fliesberg]

I noticed suddenly that deluge wouldn't boot up properly. I did some stracing and got this..

epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0                                                                                                       [95/1947]
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
open("/home/inty/.config/deluge/state/a718bfd389f398cda897fb17273eea7f8bb18f6b.torrent", O_RDONLY) = 41
fstat(41, {st_mode=S_IFREG|0644, st_size=32313, ...}) = 0
fstat(41, {st_mode=S_IFREG|0644, st_size=32313, ...}) = 0
lseek(41, 0, SEEK_CUR)                  = 0
lseek(41, 0, SEEK_CUR)                  = 0
fstat(41, {st_mode=S_IFREG|0644, st_size=32313, ...}) = 0
read(41, "d8:announce70:http://tracker.wha"..., 28672) = 28672
read(41, "\24\201\26\ft\177D\25H\233\10:\313\3U3\366\31\227T\3713\353*\377\332{\27;\234\326\200"..., 4096) = 3641
read(41, "", 4096)                      = 0
close(41)                               = 0
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 167, NULL) = 0
futex(0x562c78c78c40, FUTEX_WAKE_PRIVATE, 1) = 0
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 169, NULL) = -1 EAGAIN (Resource temporarily unavailable)
futex(0x562c78c78c40, FUTEX_WAKE_PRIVATE, 1) = 0
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
epoll_ctl(4, EPOLL_CTL_MOD, 3, {EPOLLIN|EPOLLERR|EPOLLET, {u32=2026330968, u64=94749004880728}}) = 0
futex(0x562c78c64b20, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL

It just gets stuck there and then repeats

) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
futex(0x562c78c78c6c, FUTEX_WAIT_PRIVATE, 171, NULL

[Mattias Fliesberg]

I did some more analyzing and noticed that it stopped at the debug log message "setting %s's file priorities" on some torrents. It seems it's just waiting at this line

self.options["file_priorities"] = self.handle.file_priorities()

in deluge/core/torrent.py line 335 that is. If I comment that deluge starts but I can't change file priorities for obvious reasons :/

[Calum]

I suspect this is libtorrent issue if it's hanging on that line. Please supply the following along with a gdb trace, preferably with libtorrent debug build installed.

​http://dev.deluge-torrent.org/wiki/Contributing/BugReporting#CollectBugInformation