[libvirt-users] deadlock on connection loosing
Александр
sss at sss.chaoslab.ru
Sun Jun 30 00:41:37 UTC 2013
В письме от Вторник, 25-июн-2013 11:47:10 пользователь Michal Privoznik
написал:
> On 24.06.2013 11:36, Александр wrote:
> > libvirtd will lock if for example kill programm which established
> > connection,>
> > only sigkill + restart helps., to reproduce:
> > virConnectPtr libvirt_connection = virConnectOpen("qemu:///system");
> > if(libvirt_connection == NULL)
> > {
> >
> > std::cout<<"failed to connect to qemu:///system\n";
> > exit(-1);
> >
> > }
> > exit(0);
>
> Unfortunately, I'm unable to reproduce. Can you 't a a bt' again? Are
> you able to try the current git HEAD?
>
> Michal
i also fail to reproduce it now, but my program still locks libvirt, currently
i trying to create domain with
<?xml version="1.0" encoding="UTF-8"?>
<domain type="kvm">
<tittle>Automatically created domain with default configuration</tittle>
<uuid>70a2e046-769c-43d2-88a0-5310ce33cbf8</uuid>
<name>vm1</name>
<description>no description</description>
<os>
<type>hvm</type>
<boot dev="cdrom"/>
<boot dev="hd"/>
</os>
<vcpu>1</vcpu>
<memory unit="MB">512</memory>
<cpu model="host-model">
<topology sockets="1" cores="1" threads="1"/>
</cpu>
<clock offset="localtime"/>
<devices>
<graphics type="vnc" autoport="yes" password="admin"/>
<channel type="unix">
<source mode="bind" path="/var/run/vm1.sock"/>
<target type="virtio" name="org.guest_agent.0"/>
</channel>
</devices>
</domain>
backtrace from gdb
t a a bt
Thread 11 (Thread 0x7f57484a2700 (LWP 17528)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d26b in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 10 (Thread 0x7f5747ca1700 (LWP 17529)):
#0 0x00007f574eddd344 in __lll_lock_wait () from /lib64/libpthread.so.0
#1 0x00007f574edd8e56 in _L_lock_511 () from /lib64/libpthread.so.0
#2 0x00007f574edd8caa in pthread_mutex_lock () from /lib64/libpthread.so.0
#3 0x00007f574f12bcd1 in virDomainObjListSearchName.23513 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574f129e95 in virHashSearch () from /usr/lib64/libvirt.so.0
#5 0x00007f574f0bf46d in virDomainObjListAddLocked.isra.54.25425 () from
/usr/lib64/libvirt.so.0
#6 0x00007f574f0bf557 in virDomainObjListAdd () from /usr/lib64/libvirt.so.0
#7 0x00007f5741e7e8bf in qemuDomainDefineXML.40992 () from
/usr/lib64/libvirt/connection-driver/libvirt_driver_qemu.so
#8 0x00007f574f06eddb in virDomainDefineXML () from /usr/lib64/libvirt.so.0
#9 0x00007f574facac6d in remoteDispatchDomainDefineXMLHelper.10498 ()
#10 0x00007f574f04ec27 in virNetServerProgramDispatch () from
/usr/lib64/libvirt.so.0
#11 0x00007f574f04f128 in virNetServerHandleJob.78060 () from
/usr/lib64/libvirt.so.0
#12 0x00007f574f17d1db in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#13 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#14 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#15 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 9 (Thread 0x7f57474a0700 (LWP 17530)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d26b in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 8 (Thread 0x7f5746c9f700 (LWP 17531)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d26b in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 7 (Thread 0x7f574649e700 (LWP 17532)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d26b in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 6 (Thread 0x7f5745c9d700 (LWP 17533)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d153 in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 5 (Thread 0x7f574549c700 (LWP 17534)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d153 in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 4 (Thread 0x7f5744c9b700 (LWP 17535)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d153 in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 3 (Thread 0x7f574449a700 (LWP 17536)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d153 in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 2 (Thread 0x7f5743c99700 (LWP 17537)):
#0 0x00007f574edda90c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x00007f574f17b246 in virCondWait () from /usr/lib64/libvirt.so.0
#2 0x00007f574f17d153 in virThreadPoolWorker.18087 () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f1adef1 in virThreadHelper.17820 () from
/usr/lib64/libvirt.so.0
#4 0x00007f574edd6d63 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f574eb0e04d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f574fa45740 (LWP 17527)):
#0 0x00007f574eb0476d in poll () from /lib64/libc.so.6
#1 0x00007f574f14ad5e in virEventPollRunOnce () from /usr/lib64/libvirt.so.0
#2 0x00007f574f11841d in virEventRunDefaultImpl () from
/usr/lib64/libvirt.so.0
#3 0x00007f574f18d79d in virNetServerRun () from /usr/lib64/libvirt.so.0
#4 0x00007f574fac4149 in main ()
i using git build 3a214482ec07be65adcfa9d8e08ad55a333589bb
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