[libvirt-users] libvirt crash when using libxl (xen 4.3)

dienet dienet at poczta.fm
Sun Oct 6 11:27:22 UTC 2013 

Hi

I was trying out the libxl backend of xen 4.3 with libvirt, but I found it  
very unstable and unusable.
I'm in xen 4.3 dom0 and starting:

1. xen stuff:

echo "Starting Xen..."
/etc/init.d/xencommons start
#/etc/init.d/xend start

. /etc/rc.d/rc.xen_bridge start

/etc/init.d/xendomains start
#libvirtd -l -d
hsflowd

2. Starting libvirt -v to see what is going on.

After that I'm using virsh to do some simple tasks:

virsh # list
  Id    Name                           State
----------------------------------------------------

Where is dom0?

virsh # create debian_pv.xml
error: Failed to create domain from debian_pv.xml
error: End of file while reading data: Input/output error
error: One or more references were leaked after disconnect from the  
hypervisor
error: Failed to reconnect to the hypervisor

And log from libvirt:
2013-10-06 11:24:17.693+0000: 2162: debug :  
remoteDispatchDomainCreateXMLHelper:3017 : server=0x7fe92c017760  
client=0x7fe92c029970 msg=0x7fe92c029520 rerr=0x7fe92511bd50  
args=0x7fe90c000af0 ret=0x7fe90c000930
2013-10-06 11:24:17.693+0000: 2162: debug : virDomainCreateXML:1996 :  
conn=0x7fe904000a80, xmlDesc=<domain type='xen'>
   <name>debian_pv</name>
   <uuid>4590a985-69c1-4407-8517-da3da4673d9b</uuid>
   <memory unit='KiB'>262144</memory>
   <currentMemory unit='KiB'>262144</currentMemory>
   <vcpu placement='static' cpuset='1'>1</vcpu>
   <bootloader>pygrub</bootloader>
   <os>
     <type arch='x86_64' machine='xenpv'>linux</type>
   </os>
   <clock offset='utc' adjustment='reset'/>
   <on_poweroff>destroy</on_poweroff>
   <on_reboot>restart</on_reboot>
   <on_crash>restart</on_crash>
   <devices>
     <disk type='file' device='disk'>
       <driver name='file'/>
       <source file='/root/vms/debian_pv/debian_pv.img'/>
       <target dev='sda' bus='xen'/>
     </disk>
     <interface type='bridge'>
       <mac address='00:16:3e:59:78:01'/>
       <source bridge='xenbr0'/>
     </interface>
     <console type='pty'>
       <target type='xen' port='0'/>
     </console>
     <input type='mouse' bus='xen'/>
     <graphics type='vnc' autoport='no' listen='0.0.0.0'>
       <listen type='address' address='0.0.0.0'/>
     </graphics>
   </devices>
</domain>

, flags=0
2013-10-06 11:24:17.693+0000: 2162: debug : virObjectRef:293 : OBJECT_REF:  
obj=0x7fe914075300
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectRef:293 : OBJECT_REF:  
obj=0x7fe92c012fb0
2013-10-06 11:24:17.694+0000: 2162: debug :  
virAccessManagerCheckDomain:231 : manager=0x7fe92c012fb0(name=stack)  
driver=xenlight domain=0x7fe90c009130 perm=2
2013-10-06 11:24:17.694+0000: 2162: debug :  
virAccessManagerCheckDomain:231 : manager=0x7fe92c017360(name=none)  
driver=xenlight domain=0x7fe90c009130 perm=2
2013-10-06 11:24:17.694+0000: 2162: debug :  
virAccessManagerCheckDomain:231 : manager=0x7fe92c012fb0(name=stack)  
driver=xenlight domain=0x7fe90c009130 perm=4
2013-10-06 11:24:17.694+0000: 2162: debug :  
virAccessManagerCheckDomain:231 : manager=0x7fe92c017360(name=none)  
driver=xenlight domain=0x7fe90c009130 perm=4
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe92c012fb0
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectNew:199 : OBJECT_NEW:  
obj=0x7fe90c002d10 classname=virDomainObj
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectNew:199 : OBJECT_NEW:  
obj=0x7fe90c005b60 classname=libxlDomainObjPrivate
2013-10-06 11:24:17.694+0000: 2162: debug : virDomainObjNew:2063 :  
obj=0x7fe90c002d10
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectRef:293 : OBJECT_REF:  
obj=0x7fe914075300
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectRef:293 : OBJECT_REF:  
obj=0x7fe914075300
2013-10-06 11:24:17.694+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe914075300
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCleanupTimeouts:517 : Cleanup 2
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollCleanupHandles:565  
: Cleanup 11
2013-10-06 11:24:17.694+0000: 2158: debug : virEventRunDefaultImpl:271 :  
running default event implementation
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCleanupTimeouts:517 : Cleanup 2
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollCleanupHandles:565  
: Cleanup 11
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=0 w=1, f=5 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=1 w=2, f=7 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=2 w=3, f=9 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=3 w=4, f=10 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=4 w=5, f=11 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=5 w=6, f=12 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=6 w=7, f=13 e=0 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=7 w=8, f=13 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=8 w=9, f=14 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=9 w=34, f=21 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollMakePollFDs:394 :  
Prepare n=10 w=36, f=22 e=1 d=0
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCalculateTimeout:332 : Calculate expiry of 2 timers
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCalculateTimeout:340 : Got a timeout scheduled for  
1381058662693
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCalculateTimeout:353 : Schedule timeout then=1381058662693  
now=1381058657694
2013-10-06 11:24:17.694+0000: 2158: debug :  
virEventPollCalculateTimeout:362 : Timeout at 1381058662693 due in 4999 ms
2013-10-06 11:24:17.694+0000: 2158: debug : virEventPollRunOnce:630 :  
EVENT_POLL_RUN: nhandles=10 timeout=4999
2013-10-06 11:24:17.707+0000: 2162: debug : virFileClose:90 : Closed fd 28
2013-10-06 11:24:17.726+0000: 2162: error : libxlVmStart:627 : internal  
error: libxenlight failed to create new domain 'debian_pv'
2013-10-06 11:24:17.726+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe914075300
2013-10-06 11:24:17.726+0000: 2162: debug : virObjectRef:293 : OBJECT_REF:  
obj=0x7fe90c002d10
2013-10-06 11:24:17.726+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe90c002d10
2013-10-06 11:24:17.726+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe90c002d10
2013-10-06 11:24:17.726+0000: 2162: debug : virObjectUnref:258 :  
OBJECT_DISPOSE: obj=0x7fe90c002d10
2013-10-06 11:24:17.726+0000: 2162: debug : virDomainObjDispose:2029 :  
obj=0x7fe90c002d10
2013-10-06 11:24:17.727+0000: 2162: debug : virObjectUnref:256 :  
OBJECT_UNREF: obj=0x7fe90c005b60
2013-10-06 11:24:17.727+0000: 2162: debug : virObjectUnref:258 :  
OBJECT_DISPOSE: obj=0x7fe90c005b60


      ====== end of log =====

Segmentation fault

Why crash?
Am I doing something wrong?

-- 
pozdr0
dienet

"Old C programmers never die. They're just cast into void."

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