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From Wei ZHOU <ustcweiz...@gmail.com>
Subject Re: libvirt exception
Date Mon, 11 May 2015 07:02:03 GMT
Hi Mike,

Please apply the following patch to cloudstack, and copy the file
agent/bindir/libvirtqemuhook.in to repace /etc/libvirt/hooks/qemu on your
hosts

--start------------

diff --git a/agent/bindir/libvirtqemuhook.in b/agent/bindir/
libvirtqemuhook.in
index 7bf9634..a895280 100755
--- a/agent/bindir/libvirtqemuhook.in
+++ b/agent/bindir/libvirtqemuhook.in
@@ -16,6 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 import sys
+import re
 from xml.dom.minidom import parse
 from cloudutils.configFileOps import configFileOps
 from cloudutils.networkConfig import networkConfig
@@ -24,21 +25,29 @@ def isOldStyleBridge(brName):
        return True
     else:
        return False
+def isNewStyleBridge(brName):
+    if re.match(r"br(\w+)-(\d+)", brName) == None:
+       return False
+    else:
+       return True
 def getGuestNetworkDevice():
     netlib = networkConfig()
     cfo = configFileOps("/etc/cloudstack/agent/agent.properties")
     guestDev = cfo.getEntry("guest.network.device")
     enslavedDev = netlib.getEnslavedDev(guestDev, 1)
-    return enslavedDev
+    return enslavedDev.split(".")[0]
 def handleMigrateBegin():
     try:
         domain = parse(sys.stdin)
         for interface in domain.getElementsByTagName("interface"):
             source = interface.getElementsByTagName("source")[0]
             bridge = source.getAttribute("bridge")
-            if not isOldStyleBridge(bridge):
+            if isOldStyleBridge(bridge):
+                vlanId = bridge.replace("cloudVirBr","")
+            elif isNewStyleBridge(bridge):
+                vlanId = re.sub(r"br(\w+)-","",bridge)
+            else:
                 continue
-            vlanId = bridge.replace("cloudVirBr","")
             phyDev = getGuestNetworkDevice()
             newBrName="br" + phyDev + "-" + vlanId
             source.setAttribute("bridge", newBrName)

-----end-------------

Kind regards,
Wei


2015-05-10 7:35 GMT+02:00 Mike C <mcrosson_cloudstack@nusku.net>:

> On 2015-05-08 20:07, Marcus wrote:
>
>> Can you confirm that those bridges and bond devices exist prior to
>> attempting migration, and that the VMs are attached to them and work?
>> Perhaps a 'brctl show' and 'virsh dumpxml'. Those look like they should be
>> cloudstack-generated guest network bridges and libvirt is complaining they
>> don't exist
>>
> Everything as far as I can tell is working minus this migration. I have a
> few virtual routers running on this machine and VMs, each environment
> running on the box seems to be doing working just fine. The base mgmtbr0,
> cloudbr0, cloudbr1 all come up at boot prior to CloudStack and are working.
>
> Command output is below.
>
> Also: the router seems to have been restarted and was allocated on the
> machine I was trying to migrate it to. Trying to migrate it back resulted
> in the same error message.
>
> -- Mike
>
>
> # brctl show
> bridge name     bridge id               STP enabled     interfaces
> breth0-1209             8000.6805ca095d7f       no              eth0.1209
> breth0-1221             8000.6805ca095d7f       no              eth0.1221
>                                                         vnet0
>                                                         vnet3
> cloud0          8000.fe00a9fe0380       no              vnet1
> cloudbr0                8000.6805ca095d7f       no              eth0.1100
>                                                         vnet2
> cloudbr1                8000.6805ca095d7f       no              eth0.1200
> mgmtbr0         8000.002564b522ef       no              eth1
> virbr0          8000.000000000000       yes
>
> # virsh dumpxml r-93-XML
> <domain type='kvm' id='18'>
>   <name>r-93-VM</name>
>   <uuid>5269e919-564a-4986-92c1-07464e99e3ce</uuid>
>   <description>Debian GNU/Linux 7(64-bit)</description>
>   <memory unit='KiB'>262144</memory>
>   <currentMemory unit='KiB'>262144</currentMemory>
>   <vcpu placement='static'>1</vcpu>
>   <cputune>
>     <shares>500</shares>
>   </cputune>
>   <resource>
>     <partition>/machine</partition>
>   </resource>
>   <os>
>     <type arch='x86_64' machine='pc-i440fx-trusty'>hvm</type>
>     <boot dev='cdrom'/>
>     <boot dev='hd'/>
>   </os>
>   <features>
>     <acpi/>
>     <apic/>
>     <pae/>
>   </features>
>   <cpu>
>   </cpu>
>   <clock offset='utc'/>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>destroy</on_crash>
>   <devices>
>     <emulator>/usr/bin/kvm-spice</emulator>
>     <disk type='file' device='disk'>
>       <driver name='qemu' type='qcow2' cache='none'/>
>       <source
> file='/mnt/d5174632-721e-39ed-b93b-462539f63c77/c1b45654-5e74-420e-bf91-5beb745546f8'/>
>       <target dev='hda' bus='ide'/>
>       <alias name='ide0-0-0'/>
>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw' cache='none'/>
>       <source file='/usr/share/cloudstack-common/vms/systemvm.iso'/>
>       <target dev='hdc' bus='ide'/>
>       <readonly/>
>       <alias name='ide0-1-0'/>
>       <address type='drive' controller='0' bus='1' target='0' unit='0'/>
>     </disk>
>     <controller type='usb' index='0'>
>       <alias name='usb0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x2'/>
>     </controller>
>     <controller type='pci' index='0' model='pci-root'>
>       <alias name='pci.0'/>
>     </controller>
>     <controller type='ide' index='0'>
>       <alias name='ide0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x1'/>
>     </controller>
>     <controller type='virtio-serial' index='0'>
>       <alias name='virtio-serial0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0'/>
>     </controller>
>     <interface type='bridge'>
>       <mac address='02:00:6b:5b:00:03'/>
>       <source bridge='breth0-1221'/>
>       <bandwidth>
>         <inbound average='25600' peak='25600'/>
>         <outbound average='25600' peak='25600'/>
>       </bandwidth>
>       <target dev='vnet0'/>
>       <model type='e1000'/>
>       <alias name='net0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
>     <interface type='bridge'>
>       <mac address='0e:00:a9:fe:03:80'/>
>       <source bridge='cloud0'/>
>       <target dev='vnet1'/>
>       <model type='e1000'/>
>       <alias name='net1'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
>     </interface>
>     <interface type='bridge'>
>       <mac address='06:13:ca:00:00:36'/>
>       <source bridge='cloudbr0'/>
>       <bandwidth>
>         <inbound average='25600' peak='25600'/>
>         <outbound average='25600' peak='25600'/>
>       </bandwidth>
>       <target dev='vnet2'/>
>       <model type='e1000'/>
>       <alias name='net2'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> function='0x0'/>
>     </interface>
>     <serial type='pty'>
>       <source path='/dev/pts/0'/>
>       <target port='0'/>
>       <alias name='serial0'/>
>     </serial>
>     <console type='pty' tty='/dev/pts/0'>
>       <source path='/dev/pts/0'/>
>       <target type='serial' port='0'/>
>       <alias name='serial0'/>
>     </console>
>     <channel type='unix'>
>       <source mode='bind' path='/var/lib/libvirt/qemu/r-93-VM.agent'/>
>       <target type='virtio' name='r-93-VM.vport'/>
>       <alias name='channel0'/>
>       <address type='virtio-serial' controller='0' bus='0' port='1'/>
>     </channel>
>     <input type='tablet' bus='usb'>
>       <alias name='input0'/>
>     </input>
>     <input type='mouse' bus='ps2'/>
>     <input type='keyboard' bus='ps2'/>
>     <graphics type='vnc' port='5900' autoport='yes' listen='172.16.16.31'>
>       <listen type='address' address='172.16.16.31'/>
>     </graphics>
>     <video>
>       <model type='cirrus' vram='9216' heads='1'/>
>       <alias name='video0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> function='0x0'/>
>     </video>
>     <memballoon model='none'>
>       <alias name='balloon0'/>
>     </memballoon>
>   </devices>
>   <seclabel type='none'/>
> </domain>
>
>

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