On 04/20/2015 09:28 PM, Matthew Schumacher wrote:
On 04/20/2015 05:12 PM, Laine Stump wrote:
On 04/20/2015 08:45 PM, Matthew Schumacher wrote:
List,
I was under the impression that I could restart libvirtd without it destroying my VMs, but am not finding that to be true. If not, then something is wrong.
Here are the logs from the vm:
2015-04-20 23:50:20.387+0000: shutting down qemu: terminating on signal 15 from pid 25298
And part of the logs from libvirt when I started it. Does this help at all?
2015-04-20 23:50:20.387+0000: 25373: error : virStorageFileBackendFileReadHeader:1443 : Failed to open file '/dev/sr0': No medium found 2015-04-20 23:50:20.387+0000: 25373: debug : virStorageFileReadHeader:2714 : read of storage header 0x7fb8cc0d75f0: ret=-1 2015-04-20 23:50:20.387+0000: 25373: debug : virStorageFileBackendFileDeinit:1369 : deinitializing FS storage file 0x7fb8cc0d75f0 (block:/dev/sr0) 2015-04-20 23:50:20.387+0000: 25373: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7fb8cc0155b0 2015-04-20 23:50:20.387+0000: 25373: debug : qemuDomainObjEndJob:1542 : Stopping job: modify (async=none vm=0x7fb8cc0d8510 name=test) 2015-04-20 23:50:20.387+0000: 25373: info : virObjectRef:296 : OBJECT_REF: obj=0x7fb8cc0155b0 2015-04-20 23:50:20.387+0000: 25373: debug : qemuProcessStop:5089 : Shutting down vm=0x7fb8cc0d8510 name=test id=6 pid=25245 flags=0 2015-04-20 23:50:20.387+0000: 25373: info : virObjectRef:296 : OBJECT_REF: obj=0x7fb8cc0155b0 2015-04-20 23:50:20.387+0000: 25373: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7fb8cc0155b0 2015-04-20 23:50:20.387+0000: 25373: debug : virFileClose:102 : Closed fd 19 2015-04-20 23:50:20.387+0000: 25373: info : qemuMonitorClose:904 : QEMU_MONITOR_CLOSE: mon=0x7fb8d0000bd0 refs=2 2015-04-20 23:50:20.387+0000: 25373: info : virEventPollRemoveHandle:186 : EVENT_POLL_REMOVE_HANDLE: watch=10 2015-04-20 23:50:20.387+0000: 25373: debug : virEventPollRemoveHandle:199 : mark delete 9 18 2015-04-20 23:50:20.387+0000: 25373: debug : virEventPollInterruptLocked:726 : Interrupting 2015-04-20 23:50:20.387+0000: 25373: debug : virFileClose:102 : Closed fd 18 2015-04-20 23:50:20.387+0000: 25373: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7fb8d0000bd0 2015-04-20 23:50:20.387+0000: 25373: debug : qemuProcessKill:5047 : vm=0x7fb8cc0d8510 name=test pid=25245 flags=5
Well, this is when the qemu process is killed (I'm pretty clever, eh? :-) I have 3 questions: 1) what version of libvirt are you running and on what distro? 2) can you reproduce this reliably? 3) If the answer to 2 is "yes", do you have the libvirt-debuginfo package installed, and can you stop libvirtd, then run it under gdb with a breakpoint at qemuProcessKill? Once you hit that breakpoint, you could get a backtrace with the "bt" command and that might give us some useful info about where it is coming from. Oh, by the way, are these perhaps transient domains started with virDomainCreate*? Or are they standard persistent domains defined with virDomainDefineXML? (Also, I'll just mention that qemuProcessKill() is called from qemuProcessStop(), and I notice that is called in a couple places related to snapshot create and revert which you mentioned in the original message. Since this isn't normal behavior, and the snapshot stuff is under active development, I wonder if this is related...)
2015-04-20 23:50:20.387+0000: 25373: debug : virProcessKillPainfully:352 : vpid=25245 force=1 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollRunOnce:650 : Poll got 2 event(s) 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchTimeouts:432 : Dispatch 0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:478 : Dispatch 8 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=0 w=1 2015-04-20 23:50:20.387+0000: 25298: info : virEventPollDispatchHandles:506 : EVENT_POLL_DISPATCH_HANDLE: watch=1 events=1 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=1 w=2 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=4 w=5 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=5 w=6 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=7 w=8 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=8 w=9 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=9 w=10 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:495 : Skip deleted n=9 w=10 f=18 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollDispatchHandles:492 : i=10 w=11 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupTimeouts:525 : Cleanup 0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupTimeouts:561 : Found 0 out of 0 timeout slots used, releasing 0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupHandles:574 : Cleanup 11 2015-04-20 23:50:20.387+0000: 25298: info : virEventPollCleanupHandles:587 : EVENT_POLL_PURGE_HANDLE: watch=10
2015-04-20 23:50:20.387+0000: 25298: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7fb8d0000bd0 2015-04-20 23:50:20.387+0000: 25298: info : virObjectUnref:261 : OBJECT_DISPOSE: obj=0x7fb8d0000bd0 2015-04-20 23:50:20.387+0000: 25298: debug : qemuMonitorDispose:259 : mon=0x7fb8d0000bd0
2015-04-20 23:50:20.387+0000: 25298: info : virObjectUnref:259 : OBJECT_UNREF: obj=0x7fb8cc0d8510
2015-04-20 23:50:20.387+0000: 25298: debug : virEventRunDefaultImpl:305 : running default event implementation 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupTimeouts:525 : Cleanup 0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupTimeouts:561 : Found 0 out of 0 timeout slots used, releasing 0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCleanupHandles:574 : Cleanup 10 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=0 w=1, f=7 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=1 w=2, f=9 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=2 w=3, f=11 e=0 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=3 w=4, f=12 e=0 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=4 w=5, f=6 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=5 w=6, f=13 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=6 w=7, f=14 e=0 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=7 w=8, f=14 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=8 w=9, f=16 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollMakePollFDs:400 : Prepare n=9 w=11, f=20 e=1 d=0 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCalculateTimeout:338 : Calculate expiry of 0 timers 2015-04-20 23:50:20.387+0000: 25298: debug : virEventPollCalculateTimeout:370 : No timeout is pending 2015-04-20 23:50:20.387+0000: 25298: info : virEventPollRunOnce:640 : EVENT_POLL_RUN: nhandles=7 timeout=-1
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