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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9142) Migrate VM changes xmlDesc in an unsafe way
Date Thu, 28 Apr 2016 19:58:13 GMT


ASF subversion and git services commented on CLOUDSTACK-9142:

Commit c03e359824327b56af6b1921155d8796d2958f9c in cloudstack's branch refs/heads/master from
[;h=c03e359 ]

Merge pull request #1348 from DaanHoogland/CLOUDSTACK-9142

CLOUDSTACK-9142 Migrate VM changes xmlDesc in a safe wayThe problem arises when the origin
hypervisor has an ip addres that ends with 1, like '' and the qemu VM description
is containing an address that has that as part of its address, '' for instance.
now migrating to '' will change both addresses in the xml description file for
qemu. It is fixed and unit tests are added. I am not sure yet how to integration test this.
Regression will probably work so creating a PR now.

* pr/1348:
  CLOUDSTACK-9142 Migrate VM changes xmlDesc in a safe way

Signed-off-by: Will Stevens <>

> Migrate VM changes xmlDesc in an unsafe way
> -------------------------------------------
>                 Key: CLOUDSTACK-9142
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM, Management Server
>    Affects Versions: 4.6.0, 4.7.0
>            Reporter: David Amorim Faria
>            Assignee: Daan Hoogland
>            Priority: Critical
> This issue appears with commit
> where xmlDesc has some content replaced: {code}
> xmlDesc = dm.getXMLDesc(xmlFlag).replace(libvirtComputingResource.getPrivateIp(), command.getDestinationIp());
> {code}
> This line from was refactored into
in commit
> Example, node1 is, node2 is, rbd mon_host is
> VM is running on kvm node1 and this happened when migrating a VM from node1 to node2,
where the kvm nodes and the RBD mon nodes (mon_host) use IP addresses in the same range, and
the mon_host has an ip address that partially matches the ip address (string) of the first
kvm node.
> In the process list one can see that the mon_host changes from to
in the destination host, blocking the migration after a timeout due to primary storage not
being available.
> {code}
> root     25206  1.8  0.0 440184 17188 ?        Sl   13:33   0:00 /usr/libexec/qemu-kvm
-name r-74-VM -S -machine pc-i440fx-rhel7.0.0,accel=kvm,usb=off -cpu host,+rdtscp,+pdpe1gb,+dca,+pcid,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pclmuldq,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme
-m 256 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 1a32b655-0acf-424b-8722-9e7f507a3070
-smbios type=1,manufacturer=Apache Software Foundation,product=CloudStack KVM Hypervisor,uuid=1a32b655-0acf-424b-8722-9e7f507a3070
-no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-r-74-VM/monitor.sock,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on
-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6
-drive file=rbd:rbd/15ea00f9-e52e-43cf-9e5e-62188e9da5d2:id=cloudstack:key=XXXXXXXX==:auth_supported=cephx\;none:mon_host=\:6789,if=none,id=drive-virtio-disk0,format=raw,serial=15ea00f9e52e43cf9e5e,cache=none
-device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2
-drive file=/usr/share/cloudstack-common/vms/systemvm.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw,cache=none
-device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=1 -netdev tap,fd=32,id=hostnet0,vhost=on,vhostfd=33
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=11:11:11:11:11:11,bus=pci.0,addr=0x3,rombar=0,romfile=
-netdev tap,fd=34,id=hostnet1,vhost=on,vhostfd=35 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=22:22:22:22:22:22,bus=pci.0,addr=0x4,rombar=0,romfile=
-netdev tap,fd=36,id=hostnet2,vhost=on,vhostfd=37 -device virtio-net-pci,netdev=hostnet2,id=net2,mac=33:33:33:33:33:33,bus=pci.0,addr=0x5,rombar=0,romfile=
-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/r-74-VM.agent,server,nowait
-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=r-74-VM.vport
-device usb-tablet,id=input0 -vnc,password -vga cirrus -incoming tcp:[::]:49152
-msg timestamp=on
> {code}

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