[Libguestfs] [ovirt-users] Slow conversion from VMware in 4.1

[Luca 'remix_tj' Lorenzetto]

On Thu, Jan 25, 2018 at 10:08 AM, Richard W.M. Jones <rjones at redhat.com> wrote:
> There's got to be some difference between your staging environment and
> your production environment, and I'm pretty sure it has nothing to do
> with the version of oVirt.
>
> Are you running virt-v2v inside a virtual machine, and previously you
> ran it on bare-metal?  Or did you disable nested KVM?  That seems like
> the most likely explanation for the difference (although I'm surprised
> that the difference is so large).
>
> Rich.
>

Hello Rich,

i'm running virt-v2v throught the import option of oVirt.

[root at kvm01 ~]# rpm -qa virt-v2v
virt-v2v-1.36.3-6.el7_4.3.x86_64
[root at kvm01 ~]# rpm -qa libguestfs
libguestfs-1.36.3-6.el7_4.3.x86_64
[root at kvm01 ~]# rpm -qa "redhat-virtualization-host-image-update*"
redhat-virtualization-host-image-update-placeholder-4.1-8.1.el7.noarch
redhat-virtualization-host-image-update-4.1-20171207.0.el7_4.noarch

(yes, i'm running RHV, but i think this shouldn't change the behaviour)

I don't set anything in the commandline or whatever, i set only the
source and destination throught the API. So virt-v2v is coordinated
via vdsm and runs on the bare-metal host.

The network distance is "0", because vcenter, source vmware hosts, kvm
hosts and ovirt hosts lies in the same network. The only annotation is
that also vCenter is a VM, running on esx environment.

Network interfaces both on source and destination are 10Gbit, but
there may be a little slowdown on vcenter side because has to get the
data from esx's datastore and forward to the ovirt host.

Just for reference this is the virt-v2v i found with ps on an host
when converting (this may be not the one that generated the output i
reported before, but all are the same):

/usr/bin/virt-v2v -v -x -ic
vpx://vmwareuser%40domain@vcenter/DC/Cluster/Host?no_verify=1 -o vdsm
-of raw -oa preallocated --vdsm-image-uuid
9ef9a0fd-b9e0-4adb-a05a-70560eca553d --vdsm-vol-uuid
8fc08042-34ec-4018-a4d4-622fda51f4e8 --password-file
/var/run/vdsm/v2v/34afd77c-edbd-459e-a221-0df56c42274b.tmp
--vdsm-vm-uuid 34afd77c-edbd-459e-a221-0df56c42274b --vdsm-ovf-output
/var/run/vdsm/v2v --machine-readable -os
/rhev/data-center/e8263fb4-114d-4706-b1c0-5defcd15d16b/9ba693b0-7588-411f-b97c-ec2de619d2f8
vmtoconvert


Luca




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Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca at gmail.com>