[Users] VM migrations failing

[Dead Horse]

note ignore the IP diff in the ssh host auth --> copy/paste fail ;)
- DHC


On Thu, Jan 31, 2013 at 11:25 AM, Dead Horse
<deadhorseconsulting at gmail.com>wrote:

> Doh, brain fart VDSM is not involved here for the purposed of the needed
> test.
> Here is my initial whack at it:
>
> Source Node:
>
> virsh # list
>  Id    Name                           State
> ----------------------------------------------------
>  1     sl63                           running
>
> virsh # migrate --p2p sl63 qemu+ssh://192.168.1.2/system
> error: operation failed: Failed to connect to remote libvirt URI
> qemu+ssh://3.57.111.32/system
>
> virsh # migrate --live sl63 qemu+ssh://192.168.1.2/system
> The authenticity of host '3.57.111.32 (192.168.1.2)' can't be established.
> RSA key fingerprint is e5:1d:b3:e5:38:5f:e1:8b:73:26:9e:15:c8:0a:2d:ac.
> Are you sure you want to continue connecting (yes/no)? yes
> root at 192.168.1.2's password:
> Please enter your authentication name: vdsm at ovirt
> Please enter your password:
>
> virsh #
>
>
> Dest Node After migrate --live:
> virsh # list
>  Id    Name                           State
> ----------------------------------------------------
>  2     sl63                           running
>
> virsh #
>
>
>
> On Thu, Jan 31, 2013 at 10:38 AM, Dead Horse <
> deadhorseconsulting at gmail.com> wrote:
>
>> Shu,
>> I build oVirt Engine and vdsm from source myself. The commits I indicated
>> are what I built from.I run the engine under FC17 and my nodes are running
>> EL6.x respectively.
>>
>> Dan,
>> I reverted VDSM on my two test nodes to an earlier build of VDSM (commit:
>> c343e1833f7b6e5428dd90f14f7807dca1baa0b4)
>> VDSM after the above commit is broken due to commit:
>> fc3a44f71d2ef202cff18d7203b9e4165b546621 however when I built and tested
>> from master yesterday I did apply a patch I tested for
>> ybronhei which fixed that issue.
>>
>> I will build VDSM from master, today w/ the supervdsm patch and try the
>> manual migration you indicated.
>>
>>  - DHC
>>
>>
>>
>> On Thu, Jan 31, 2013 at 4:56 AM, Dan Kenigsberg <danken at redhat.com>wrote:
>>
>>> On Thu, Jan 31, 2013 at 11:08:58AM +0100, Martin Kletzander wrote:
>>> > On 01/31/2013 10:25 AM, Dan Kenigsberg wrote:
>>> > > On Thu, Jan 31, 2013 at 09:43:44AM +0100, Martin Kletzander wrote:
>>> > >> On 01/30/2013 08:40 PM, Dead Horse wrote:
>>> > >>> The nodes are EL6.3 based.
>>> > >>>
>>> > >>> Currently installed libvirt packages:
>>> > >>>
>>> > >>> libvirt-lock-sanlock-0.9.10-21.el6_3.8.x86_64
>>> > >>> libvirt-cim-0.6.1-3.el6.x86_64
>>> > >>> libvirt-0.9.10-21.el6_3.8.x86_64
>>> > >>> libvirt-python-0.9.10-21.el6_3.8.x86_64
>>> > >>> libvirt-client-0.9.10-21.el6_3.8.x86_64
>>> > >>>
>>> > >>> and qemu packages:
>>> > >>> qemu-kvm-0.12.1.2-2.295.el6_3.10.x86_64
>>> > >>> qemu-kvm-tools-0.12.1.2-2.295.el6_3.10.x86_64
>>> > >>> qemu-img-0.12.1.2-2.295.el6_3.10.x86_64
>>> > >>>
>>> > >>> Thus my presumption here given the above is that
>>> virDomainMigrateToURI2 has
>>> > >>> not yet been patched and/or back-ported into the EL6.x
>>> libvirt/qemu?
>>> > >>>
>>> > >>
>>> > >> virDomainMigrateToURI2 is supported since 0.9.2, but is there a
>>> > >> possibility the code is requesting direct migration?  That might
>>> explain
>>> > >> the message, which is then incorrect; this was fixed in [1].
>>> > >>
>>> > >> Martin
>>> > >>
>>> > >> [1]
>>> > >>
>>> http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=3189dfb1636da22d426d2fc07cc9f60304b16c5c
>>> > >
>>> > > What is "direct migration" exactly, in the context of qemu-kvm?
>>> > >
>>> > > We are using p2p migration
>>> > >
>>> http://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=vdsm/libvirtvm.py;h=fe140ecbfac665248e2ad5c4bfaebaf54ab884cc;hb=18c24f7c7c27ac732c4a760caa9524e7319cd47e#l501
>>> > >
>>> >
>>> > OK, so that's not the issue, sorry for the confusion.  I was thinking
>>> it
>>> > would "somehow" get there.  Direct migration doesn't exist in QEMU at
>>> > all, so it seemed weird, but I can't seem to find any other reason for
>>> > this failure; will keep searching, though.
>>>
>>> In this case, Dead Horse, would you try to migrate a VM (that you do not
>>> care much about) using
>>>     virsh -c qemu+tls://hostname/system migrate --p2p dsthost?
>>>
>>> I'd like to see that the problem reproduces this way, too. More of
>>> libvirtd.log may help. You may want to disable iptables for a moment,
>>> just to eliminate a common cause of failure.
>>>
>>
>>
>
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