Ján Tomko wrote 2018-01-18 14:27:
On Thu, Jan 18, 2018 at 11:30:16AM +0700, Artem Likhachev wrote:
# strace -p 5786
read(53, "\0\0\0\34", 4) = 4
read(53, "keep\0\0\0\1\0\0\0\2\0\0\0\2\0\0\0\0\0\0\0\0", 24) = 24
poll([{fd=5, events=POLLIN}, {fd=7, events=POLLIN}, {fd=12,
events=POLLIN}, {fd=13, events=POLLIN}, {fd=14, events=POLLIN},
{fd=15,
events=POLLIN}, {fd=19, events=POLLIN}, {fd=23,
events=POLLIN|POLLERR|POLLHUP}, {fd=21,
events=POLLIN|POLLERR|POLLHUP},
{fd=27, events=POLLIN|POLLERR|POLLHUP}, {fd=25,
events=POLLIN|POLLERR|POLLHUP}, {fd=22,
events=POLLIN|POLLERR|POLLHUP},
{fd=24, events=POLLIN|POLLERR|POLLHUP}, {fd=26,
events=POLLIN|POLLERR|POLLHUP}, {fd=29,
events=POLLIN|POLLERR|POLLHUP},
{fd=30, events=POLLIN|POLLERR|POLLHUP}, {fd=31,
events=POLLIN|POLLERR|POLLHUP}, {fd=33,
events=POLLIN|POLLERR|POLLHUP},
{fd=32, events=POLLIN|POLLERR|POLLHUP}, {fd=36,
events=POLLIN|POLLERR|POLLHUP}, {fd=35,
events=POLLIN|POLLERR|POLLHUP},
{fd=39, events=POLLIN|POLLERR|POLLHUP}, {fd=40,
events=POLLIN|POLLERR|POLLHUP}, {fd=41,
events=POLLIN|POLLERR|POLLHUP},
{fd=44, events=POLLIN|POLLERR|POLLHUP}, {fd=42,
events=POLLIN|POLLERR|POLLHUP}, {fd=43,
events=POLLIN|POLLERR|POLLHUP},
{fd=48, events=POLLIN|POLLERR|POLLHUP}, {fd=49,
events=POLLIN|POLLERR|POLLHUP}, {fd=59,
events=POLLIN|POLLERR|POLLHUP},
{fd=46, events=POLLIN|POLLERR|POLLHUP}, {fd=50,
events=POLLIN|POLLERR|POLLHUP}, ...], 43, 5000
# gdb -p 5786
(gdb) thread apply all bt
Thread 17 (Thread 0x7f411a9d7700 (LWP 5788)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f4129c2a2e6 in virCondWait (c=c@entry=0x7f412b18ebb8,
m=m@entry=0x7f412b18eb90) at util/virthread.c:154
#2 0x00007f4129c2ada3 in virThreadPoolWorker
(opaque=opaque@entry=0x7f412b183ab0) at util/virthreadpool.c:124
#3 0x00007f4129c2a078 in virThreadHelper (data=<optimized out>) at
util/virthread.c:206
#4 0x00007f4127033dc5 in start_thread (arg=0x7f411a9d7700) at
pthread_create.c:308
#5 0x00007f4126d6273d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 16 (Thread 0x7f411a1d6700 (LWP 5789)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f4129c2a2e6 in virCondWait (c=c@entry=0x7f412b18ebb8,
m=m@entry=0x7f412b18eb90) at util/virthread.c:154
#2 0x00007f4129c2ada3 in virThreadPoolWorker
(opaque=opaque@entry=0x7f412b183a00) at util/virthreadpool.c:124
#3 0x00007f4129c2a078 in virThreadHelper (data=<optimized out>) at
util/virthread.c:206
#4 0x00007f4127033dc5 in start_thread (arg=0x7f411a1d6700) at
pthread_create.c:308
#5 0x00007f4126d6273d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 15 (Thread 0x7f41199d5700 (LWP 5790)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f4129c2a2e6 in virCondWait (c=c@entry=0x7f412b18ebb8,
m=m@entry=0x7f412b18eb90) at util/virthread.c:154
#2 0x00007f4129c2ada3 in virThreadPoolWorker
(opaque=opaque@entry=0x7f412b183950) at util/virthreadpool.c:124
#3 0x00007f4129c2a078 in virThreadHelper (data=<optimized out>) at
util/virthread.c:206
#4 0x00007f4127033dc5 in start_thread (arg=0x7f41199d5700) at
pthread_create.c:308
#5 0x00007f4126d6273d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 14 (Thread 0x7f41191d4700 (LWP 5791)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f4129c2a2e6 in virCondWait (c=c@entry=0x7f412b18ebb8,
m=m@entry=0x7f412b18eb90) at util/virthread.c:154
#2 0x00007f4129c2ada3 in virThreadPoolWorker
(opaque=opaque@entry=0x7f412b1838a0) at util/virthreadpool.c:124
#3 0x00007f4129c2a078 in virThreadHelper (data=<optimized out>) at
util/virthread.c:206
#4 0x00007f4127033dc5 in start_thread (arg=0x7f41191d4700) at
pthread_create.c:308
#5 0x00007f4126d6273d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
These are all idle workers.
Thread 13 (Thread 0x7f41189d3700 (LWP 5792)):
---Type <return> to continue, or q <return> to quit---
You omitted the backtrace of the other threads.
Jan
Please, specify what do you mean? What should I do? I'm not familiar
with gdb at good level.
Here is strace output on virsh:
read(6, "", 7645) = 0
close(6) = 0
getuid() = 0
geteuid() = 0
geteuid() = 0
getuid() = 0
geteuid() = 0
socket(AF_LOCAL, SOCK_STREAM, 0) = 6
connect(6, {sa_family=AF_LOCAL,
sun_path="/var/run/libvirt/libvirt-sock"}, 110) = 0
getsockname(6, {sa_family=AF_LOCAL, NULL}, [2]) = 0
futex(0x7fd1b09dcfe8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
fcntl(6, F_GETFD) = 0
fcntl(6, F_SETFD, FD_CLOEXEC) = 0
fcntl(6, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK) = 0
futex(0x7fd1b09dcee8, FUTEX_WAKE_PRIVATE, 2147483647) = 0
pipe2([7, 8], O_CLOEXEC) = 0
write(5, "\0", 1) = 1
futex(0x7fd1b09dc280, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fd1b09dcfb0, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x7fd1b09dcf00, FUTEX_WAKE_PRIVATE, 2147483647) = 0
write(5, "\0", 1) = 1
futex(0x7fd1b09dc280, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0
poll([{fd=6, events=POLLOUT}, {fd=7, events=POLLIN}], 2, -1) = 1
([{fd=6, revents=POLLOUT}])
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
write(6, "\0\0\0\34 \0\200\206\0\0\0\1\0\0\0B\0\0\0\0\0\0\0\0\0\0\0\0",
28) = 28
rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}], 2, -1
^Cstrace: Process 16202 detached
And some errors at libvirtd log sometimes:
янв 22 03:10:03 hostname.net libvirtd[22256]: 2018-01-22
00:10:03.639+0000: 22256: error : virNetSocketReadWire:1808 : End of
file while reading data: Input/output error
янв 22 03:15:03 hostname.net libvirtd[22256]: 2018-01-22
00:15:03.802+0000: 22256: error : virNetSocketReadWire:1808 : End of
file while reading data: Input/output error
янв 22 04:45:03 hostname.net libvirtd[22256]: 2018-01-22
01:45:03.210+0000: 22256: error : virNetSocketReadWire:1808 : End of
file while reading data: Input/output error
янв 22 09:10:03 hostname.net libvirtd[22256]: 2018-01-22
06:10:03.829+0000: 22256: error : virNetSocketReadWire:1808 : End of
file while reading data: Input/output error
---
Artem Likhachev
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