On 03-11-15 01:54, Voloshanenko Igor wrote: > Thank you, Jason! > > Any advice, for troubleshooting.... > > I'm looking in code, and right now don;t see any bad things :( > Can you run the CloudStack Agent in DEBUG mode and then see after which lines in the logs it crashes? Wido > 2015-11-03 1:32 GMT+02:00 Jason Dillaman <dillaman@xxxxxxxxxx > <mailto:dillaman@xxxxxxxxxx>>: > > Most likely not going to be related to 13045 since you aren't > actively exporting an image diff. The most likely problem is that > the RADOS IO context is being closed prior to closing the RBD image. > > -- > > Jason Dillaman > > > ----- Original Message ----- > > > From: "Voloshanenko Igor" <igor.voloshanenko@xxxxxxxxx > <mailto:igor.voloshanenko@xxxxxxxxx>> > > To: "Ceph Users" <ceph-users@xxxxxxxxxxxxxx > <mailto:ceph-users@xxxxxxxxxxxxxx>> > > Sent: Thursday, October 29, 2015 5:27:17 PM > > Subject: Re: Cloudstack agent crashed JVM with > exception in > > librbd > > > From all we analyzed - look like - it's this issue > > http://tracker.ceph.com/issues/13045 > > > PR: https://github.com/ceph/ceph/pull/6097 > > > Can anyone help us to confirm this? :) > > > 2015-10-29 23:13 GMT+02:00 Voloshanenko Igor < > igor.voloshanenko@xxxxxxxxx <mailto:igor.voloshanenko@xxxxxxxxx> > > > : > > > > Additional trace: > > > > > > #0 0x00007f30f9891cc9 in __GI_raise (sig=sig@entry=6) at > > > ../nptl/sysdeps/unix/sysv/linux/raise.c:56 > > > > > #1 0x00007f30f98950d8 in __GI_abort () at abort.c:89 > > > > > #2 0x00007f30f87b36b5 in > __gnu_cxx::__verbose_terminate_handler() () from > > > /usr/lib/x86_64-linux-gnu/libstdc++.so.6 > > > > > #3 0x00007f30f87b1836 in ?? () from > > > /usr/lib/x86_64-linux-gnu/libstdc++.so.6 > > > > > #4 0x00007f30f87b1863 in std::terminate() () from > > > /usr/lib/x86_64-linux-gnu/libstdc++.so.6 > > > > > #5 0x00007f30f87b1aa2 in __cxa_throw () from > > > /usr/lib/x86_64-linux-gnu/libstdc++.so.6 > > > > > #6 0x00007f2fddb50778 in ceph::__ceph_assert_fail > > > (assertion=assertion@entry=0x7f2fdddeca05 "sub < m_subsys.size()", > > > > > file=file@entry=0x7f2fdddec9f0 "./log/SubsystemMap.h", > line=line@entry=62, > > > > > func=func@entry=0x7f2fdddedba0 > > > > <_ZZN4ceph3log12SubsystemMap13should_gatherEjiE19__PRETTY_FUNCTION__> "bool > > > ceph::log::SubsystemMap::should_gather(unsigned int, int)") at > > > common/assert.cc:77 > > > > > #7 0x00007f2fdda1fed2 in ceph::log::SubsystemMap::should_gather > > > (level=<optimized out>, sub=<optimized out>, this=<optimized out>) > > > > > at ./log/SubsystemMap.h:62 > > > > > #8 0x00007f2fdda3b693 in ceph::log::SubsystemMap::should_gather > > > (this=<optimized out>, sub=<optimized out>, level=<optimized out>) > > > > > at ./log/SubsystemMap.h:61 > > > > > #9 0x00007f2fddd879be in ObjectCacher::flusher_entry > (this=0x7f2ff80b27a0) > > > at > > > osdc/ObjectCacher.cc:1527 > > > > > #10 0x00007f2fddd9851d in ObjectCacher::FlusherThread::entry > > > (this=<optimized > > > out>) at osdc/ObjectCacher.h:374 > > > > > #11 0x00007f30f9c28182 in start_thread (arg=0x7f2e1a7fc700) at > > > pthread_create.c:312 > > > > > #12 0x00007f30f995547d in clone () at > > > ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 > > > > > > 2015-10-29 17:38 GMT+02:00 Voloshanenko Igor < > igor.voloshanenko@xxxxxxxxx <mailto:igor.voloshanenko@xxxxxxxxx> > > > > > > > : > > > > > > > Hi Wido and all community. > > > > > > > > > > We catched very idiotic issue on our Cloudstack installation, > which > > > > related > > > > to ceph and possible to java-rados lib. > > > > > > > > > > So, we have constantly agent crashed (which cause very big > problem for > > > > us... > > > > ). > > > > > > > > > > When agent crashed - it's crash JVM. And no event in logs at all. > > > > > > > > > We enabled crush dump, and after crash we see next picture: > > > > > > > > > > #grep -A1 "Problematic frame" < /hs_err_pid30260.log > > > > > > > > > Problematic frame: > > > > > > > > > C [librbd.so.1.0.0+0x5d681] > > > > > > > > > > # gdb /usr/lib/librbd.so.1.0.0 /var/tmp/cores/jsvc.25526.0.core > > > > > > > > > (gdb) bt > > > > > > > > > ... > > > > > > > > > #7 0x00007f30b9a1fed2 in ceph::log::SubsystemMap::should_gather > > > > (level=<optimized out>, sub=<optimized out>, this=<optimized out>) > > > > > > > > > at ./log/SubsystemMap.h:62 > > > > > > > > > #8 0x00007f30b9a3b693 in ceph::log::SubsystemMap::should_gather > > > > (this=<optimized out>, sub=<optimized out>, level=<optimized out>) > > > > > > > > > at ./log/SubsystemMap.h:61 > > > > > > > > > #9 0x00007f30b9d879be in ObjectCacher::flusher_entry > > > > (this=0x7f2fb4017910) > > > > at > > > > osdc/ObjectCacher.cc:1527 > > > > > > > > > #10 0x00007f30b9d9851d in ObjectCacher::FlusherThread::entry > > > > (this=<optimized > > > > out>) at osdc/ObjectCacher.h:374 > > > > > > > > > > From ceph code, this part executed when flushing cache > object... And we > > > > don;t > > > > understand why. Becasue we have absolutely different race > condition to > > > > reproduce it. > > > > > > > > > > As cloudstack have not good implementation yet of snapshot > lifecycle, > > > > sometime, it's happen, that some volumes already marked as > EXPUNGED in DB > > > > and then cloudstack try to delete bas Volume, before it's try to > > > > unprotect > > > > it. > > > > > > > > > > Sure, unprotecting fail, normal exception returned back (fail > because > > > > snap > > > > has childs... ) > > > > > > > > > > 2015-10-29 09:02:19,401 DEBUG [kvm.resource.KVMHAMonitor] > > > > (Thread-1304:null) > > > > Executing: > > > > > /usr/share/cloudstack-common/scripts/vm/hypervisor/kvm/kvmheartbeat.sh > -i > > > > 10.44.253.13 -p /var/lib/libvirt/PRIMARY -m > > > > /mnt/93655746-a9ef-394d-95e9-6e62471dd39f -h 10.44.253.11 > > > > > > > > > 2015-10-29 09:02:19,412 DEBUG [kvm.resource.KVMHAMonitor] > > > > (Thread-1304:null) > > > > Execution is successful. > > > > > > > > > 2015-10-29 09:02:19,554 INFO [kvm.storage.LibvirtStorageAdaptor] > > > > (agentRequest-Handler-5:null) Unprotecting and Removing RBD > snapshots of > > > > image 6789/71b1e2e9-1985-45ca-9ab6-9e5016b86b7c prior to > removing the > > > > image > > > > > > > > > 2015-10-29 09:02:19,571 DEBUG [kvm.storage.LibvirtStorageAdaptor] > > > > (agentRequest-Handler-5:null) Succesfully connected to Ceph > cluster at > > > > cephmon.anolim.net:6789 <http://cephmon.anolim.net:6789> > > > > > > > > > 2015-10-29 09:02:19,608 DEBUG [kvm.storage.LibvirtStorageAdaptor] > > > > (agentRequest-Handler-5:null) Unprotecting snapshot > > > > > cloudstack/71b1e2e9-1985-45ca-9ab6-9e5016b86b7c@cloudstack-base-snap > > > > > > > > > 2015-10-29 09:02:19,627 DEBUG [kvm.storage.KVMStorageProcessor] > > > > (agentRequest-Handler-5:null) Failed to delete volume: > > > > com.cloud.utils.exception.CloudRuntimeException: > > > > com.ceph.rbd.RbdException: > > > > Failed to unprotect snapshot cloudstack-base-snap > > > > > > > > > 2015-10-29 09:02:19,628 DEBUG [cloud.agent.Agent] > > > > (agentRequest-Handler-5:null) Seq 4-1921583831: { Ans: , MgmtId: > > > > 161344838950, via: 4, Ver: v1, Flags: 10, > > > > > [{"com.cloud.agent.api.Answer":{"result":false,"details":"com.cloud.utils.exception.CloudRuntimeException: > > > > com.ceph.rbd.RbdException: Failed to unprotect snapshot > > > > cloudstack-base-snap","wait":0}}] } > > > > > > > > > 2015-10-29 09:02:25,722 DEBUG [cloud.agent.Agent] > > > > (agentRequest-Handler-2:null) Processing command: > > > > com.cloud.agent.api.GetHostStatsCommand > > > > > > > > > 2015-10-29 09:02:25,722 DEBUG > [kvm.resource.LibvirtComputingResource] > > > > (agentRequest-Handler-2:null) Executing: /bin/bash -c > idle=$(top -b -n 1| > > > > awk -F, '/^[%]*[Cc]pu/{$0=$4; gsub(/[^0-9.,]+/,""); print }'); > echo $idle > > > > > > > > > 2015-10-29 09:02:26,249 DEBUG > [kvm.resource.LibvirtComputingResource] > > > > (agentRequest-Handler-2:null) Execution is successful. > > > > > > > > > 2015-10-29 09:02:26,250 DEBUG > [kvm.resource.LibvirtComputingResource] > > > > (agentRequest-Handler-2:null) Executing: /bin/bash -c > freeMem=$(free|grep > > > > cache:|awk '{print $4}');echo $freeMem > > > > > > > > > 2015-10-29 09:02:26,254 DEBUG > [kvm.resource.LibvirtComputingResource] > > > > (agentRequest-Handler-2:null) Execution is successful. > > > > > > > > > > BUT, after 20 minutes - agent crashed... If we remove all > childs and > > > > create > > > > conditions for cloudstack to delete volume - all OK - no agent > crash in > > > > 20 > > > > minutes... > > > > > > > > > > We can't connect this action - Volume delete with agent > crashe... Also we > > > > don't understand why +- 20 minutes need to last, and only then > agent > > > > crashed... > > > > > > > > > > From logs, before crash - only GetVMStats... And then - agent > started... > > > > > > > > > > 2015-10-29 09:21:55,143 DEBUG [cloud.agent.Agent] > (UgentTask-5:null) > > > > Sending > > > > ping: Seq 4-1343: { Cmd , MgmtId: -1, via: 4, Ver: v1, Flags: 11, > > > > > [{"com.cloud.agent.api.PingRoutingCommand":{"newStates":{},"_hostVmStateReport":{"i-881-1117-VM":{"state":"PowerOn","host":" > > > > cs2.anolim.net <http://cs2.anolim.net> > "},"i-7-106-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > "},"i-1683-1984-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > "},"i-11-504-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > "},"i-325-616-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > "},"i-10-52-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > "},"i-941-1237-VM":{"state":"PowerOn","host":" cs2.anolim.net > <http://cs2.anolim.net> > > > > > "}},"_gatewayAccessible":true,"_vnetAccessible":true,"hostType":"Routing","hostId":4,"wait":0}}] > > > > } > > > > > > > > > 2015-10-29 09:21:55,149 DEBUG [cloud.agent.Agent] > (Agent-Handler-3:null) > > > > Received response: Seq 4-1343: { Ans: , MgmtId: 161344838950, > via: 4, > > > > Ver: > > > > v1, Flags: 100010, > > > > > [{"com.cloud.agent.api.PingAnswer":{"_command":{"hostType":"Routing","hostId":4,"wait":0},"result":true,"wait":0}}] > > > > } > > > > > > > > > 2015-10-29 09:22:20,755 DEBUG [cloud.agent.Agent] > > > > (agentRequest-Handler-5:null) Processing command: > > > > com.cloud.agent.api.GetVmStatsCommand > > > > > > > > > 2015-10-29 09:23:02,630 INFO [cloud.agent.AgentShell] > (main:null) Agent > > > > started > > > > > > > > > 2015-10-29 09:23:02,632 INFO [cloud.agent.AgentShell] (main:null) > > > > Implementation Version is 4.3.2 > > > > > > > > > > Can you please give us direction to go deeper... As we dont > udnerstand > > > > what > > > > happened... > > > > > > > > > > Issue reproducing very easy: > > > > > > > > > > (to speed up delete process we set storage.cleanup.interval=10) > > > > > > > > > > 1. Create Volume > > > > > > > > > 2. Attach it to VM > > > > > > > > > 3. Create snapshot from this volume by hand on ceph > > > > > > > > > 4. Do snap_protect by hand on ceph for snap from previous step > > > > > > > > > 5. Create child via snap clone > > > > > > > > > 6. Deattach volume from VM and delete it > > > > > > > > > > Our problem - that this happen not in such lab situation, but > in real > > > > life... > > > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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