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Added a comment: more info on hanging

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yarikoptic 2019-03-19 21:04:54 +00:00 • committed by admin
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doc/bugs/git-annex_precommit_.__gets_stuck_after_likely_interrupted___96__annex_add__96___call/comment_6_0e3ae1862408b6d0c5e0acd9e9fa20b5._comment Normal file
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[[!comment format=mdwn
username="yarikoptic"
avatar="http://cdn.libravatar.org/avatar/f11e9c84cb18d26a1748c33b48c924b4"
subject="more info on hanging"
date="2019-03-19T21:04:54Z"
content="""
[[!format sh \"\"\"
$ strace -f -p 15565
strace: Process 15565 attached with 5 threads
[pid 15570] futex(0x7f0c2c000924, FUTEX_WAIT_PRIVATE, 15, NULL <unfinished ...>
[pid 15568] restart_syscall(<... resuming interrupted poll ...> <unfinished ...>
[pid 15566] read(3, <unfinished ...>
[pid 15567] futex(0x4a454a4, FUTEX_WAIT_PRIVATE, 27143, NULL <unfinished ...>
[pid 15566] <... read resumed> \"\1\0\0\0\0\0\0\0\", 8) = 8
[pid 15566] read(3, \"\1\0\0\0\0\0\0\0\", 8) = 8
[pid 15566] read(3, \"\1\0\0\0\0\0\0\0\", 8) = 8
.... keeps going, had to bf, kill -9 strace process
\"\"\"]]
and that 15566 is a thread:
[[!format sh \"\"\"
$ ps -L -p 15565
PID LWP TTY TIME CMD
15565 15565 pts/50 00:00:01 git-annex
15565 15566 pts/50 00:00:31 ghc_ticker
15565 15567 pts/50 00:00:00 ghc_worker
15565 15568 pts/50 00:00:00 ghc_worker
15565 15570 pts/50 00:00:00 ghc_worker
$ ls -l /proc/15566/fd | anon
total 0
lrwx------ 1 USER GROUP 64 Mar 19 17:03 0 -> /dev/pts/50
lrwx------ 1 USER GROUP 64 Mar 19 17:03 1 -> /dev/pts/50
lrwx------ 1 USER GROUP 64 Mar 19 17:03 10 -> anon_inode:[eventfd]
lrwx------ 1 USER GROUP 64 Mar 19 17:03 11 -> /dev/shm/cd6281f9a8c5f62e1da78a60ca9ca1b4D_fmriprep001_.git_annex_pidlock.lck
lrwx------ 1 USER GROUP 64 Mar 19 17:03 12 -> /zfs1/GROUP/USER/R03/WM-R03/DIAMOND/fmriprep001/.git/annex/misctmp/jlog15565-2
l-wx------ 1 USER GROUP 64 Mar 19 17:03 13 -> pipe:[233188705]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 14 -> pipe:[233188706]
l-wx------ 1 USER GROUP 64 Mar 19 17:03 16 -> pipe:[233188711]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 17 -> pipe:[233188712]
l-wx------ 1 USER GROUP 64 Mar 19 17:03 18 -> pipe:[233188714]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 19 -> pipe:[233188715]
lrwx------ 1 USER GROUP 64 Mar 19 16:59 2 -> /dev/pts/50
l-wx------ 1 USER GROUP 64 Mar 19 17:03 20 -> pipe:[233188718]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 21 -> pipe:[233188719]
lrwx------ 1 USER GROUP 64 Mar 19 17:03 3 -> anon_inode:[timerfd]
lrwx------ 1 USER GROUP 64 Mar 19 17:03 4 -> anon_inode:[eventpoll]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 5 -> pipe:[233191520]
l-wx------ 1 USER GROUP 64 Mar 19 17:03 6 -> pipe:[233191520]
lrwx------ 1 USER GROUP 64 Mar 19 17:03 7 -> anon_inode:[eventfd]
lr-x------ 1 USER GROUP 64 Mar 19 17:03 8 -> pipe:[233191523]
l-wx------ 1 USER GROUP 64 Mar 19 17:03 9 -> pipe:[233191523]
\"\"\"]]
"""]]