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Re: [Libguestfs] virt-p2v migration

Looking on our firewall, it will timeout inactive connections after 15
minutes of inactivity. I'm guessing there is no keepalive in the
control connections.



On Wed, Feb 1, 2017 at 6:38 PM, cmc <iucounu gmail com> wrote:
> Ok, thanks Rich, I will take a look and get back to you.
> On Wed, Feb 1, 2017 at 5:13 PM, Richard W.M. Jones <rjones redhat com> wrote:
>> On Wed, Feb 01, 2017 at 04:57:24PM +0000, cmc wrote:
>>> Hi,
>>> I've been trying to migrate a physical host with two disks (the first,
>>> sda, is the OS disk and the second, sdb, is a data disk) into a VM,
>>> and it always fails on the second disk. The first disk, the OS disk,
>>> migrates fine, but when it starts on the second it fails almost
>>> straightaway with the following error:
>>> (0.00/100%)^Mqemu-img: Could not open '/var/tmp/v2vovl811e67.qcow2':
>>> Could not open backing file: Failed to connect socket: Connection
>>> refused
>>> I can't see this backing file, but it may be deleted when the process
>>> fails, as unfortunately it cleans up and deletes not only the
>>> successfully migrated sda and associated files, but I suspect the
>>> second as well. Most of the rest of the log can be seen at:
>>> http://theninthdimension.blogspot.co.uk/2017/02/virt-p2v-error.html
>> What's actually happening is when the conversion server tries to
>> connect to the second disk, the ssh connection has been dropped, hence
>> the "backing file" (in fact an NBD server) cannot be connected to.
>> Refer to the second diagram here:
>>   http://libguestfs.org/virt-p2v.1.html#how-virt-p2v-works
>> I don't know why the second connection has been dropped.  Does the
>> conversion server have ssh timeouts enabled?  Or bash timeouts?  You
>> can check ClientAlive* settings in /etc/ssh/sshd_config.  Also look
>> for TMOUT or TIMEOUT environment variables on the conversion server.
>> You can also look in the logs on the conversion server to see if the
>> ssh connection was dropped or forced to close, and why.
>> Rich.
>> --
>> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
>> Read my programming and virtualization blog: http://rwmj.wordpress.com
>> virt-p2v converts physical machines to virtual machines.  Boot with a
>> live CD or over the network (PXE) and turn machines into KVM guests.
>> http://libguestfs.org/virt-v2v

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