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From "Koushik Das (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CLOUDSTACK-9142) Migrate VM changes xmlDesc in an unsafe way
Date Tue, 17 May 2016 06:14:13 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-9142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Koushik Das updated CLOUDSTACK-9142:
------------------------------------
    Fix Version/s: 4.7.2

> Migrate VM changes xmlDesc in an unsafe way
> -------------------------------------------
>
>                 Key: CLOUDSTACK-9142
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9142
>             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
>             Fix For: 4.7.2
>
>
> This issue appears with commit https://github.com/apache/cloudstack/commit/a709f34ff93579981afbd4df0f4334b61ada29a8
> where xmlDesc has some content replaced: {code}
> xmlDesc = dm.getXMLDesc(xmlFlag).replace(libvirtComputingResource.getPrivateIp(), command.getDestinationIp());
> {code}
> This line from LibvirtComputingResource.java was refactored into LibvirtMigrateCommandWrapper.java
in commit https://github.com/apache/cloudstack/commit/28e55462f15bdd8699e97b668c4ffc01735a533d
> Example, node1 is 10.0.0.1, node2 is 10.0.0.2, rbd mon_host is 10.0.0.13.
> 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 10.0.0.13 to 10.0.0.23
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=10.0.0.23\: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 10.0.0.2:4,password -vga cirrus -incoming tcp:[::]:49152
-msg timestamp=on
> {code}



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