[Libguestfs] [PATCH v2] v2v/v2v.ml: Use larger request size for -o rhv-upload

[Richard W.M. Jones]

This change slowed things down (slightly) for me, although the change
is within the margin of error so it probably made no difference.

Before:

$ time ./run virt-v2v -i disk /var/tmp/fedora-35.qcow2 -o rhv-upload -oc https://ovirt4410/ovirt-engine/api -op /tmp/ovirt-passwd -oo rhv-direct -os ovirt-data -on test14 -of raw
[   0.0] Setting up the source: -i disk /var/tmp/fedora-35.qcow2
[   1.0] Opening the source
[   6.5] Inspecting the source
[  10.5] Checking for sufficient free disk space in the guest
[  10.5] Converting Fedora Linux 35 (Thirty Five) to run on KVM
virt-v2v: warning: /files/boot/grub2/device.map/hd0 references unknown 
device "vda".  You may have to fix this entry manually after conversion.
virt-v2v: This guest has virtio drivers installed.
[  57.0] Mapping filesystem data to avoid copying unused and blank areas
[  59.0] Closing the overlay
[  59.6] Assigning disks to buses
[  59.6] Checking if the guest needs BIOS or UEFI to boot
[  59.6] Setting up the destination: -o rhv-upload -oc https://ovirt4410/ovirt-engine/api -os ovirt-data
[  79.3] Copying disk 1/1
█ 100% [****************************************]
[  89.9] Creating output metadata
[  94.0] Finishing off

real	 1m34.213s
user	 0m6.585s
sys	 0m11.880s


After:

$ time ./run virt-v2v -i disk /var/tmp/fedora-35.qcow2 -o rhv-upload -oc https://ovirt4410/ovirt-engine/api -op /tmp/ovirt-passwd -oo rhv-direct -os ovirt-data -on test15 -of raw
[   0.0] Setting up the source: -i disk /var/tmp/fedora-35.qcow2
[   1.0] Opening the source
[   7.4] Inspecting the source
[  11.7] Checking for sufficient free disk space in the guest
[  11.7] Converting Fedora Linux 35 (Thirty Five) to run on KVM
virt-v2v: warning: /files/boot/grub2/device.map/hd0 references unknown 
device "vda".  You may have to fix this entry manually after conversion.
virt-v2v: This guest has virtio drivers installed.
[  59.6] Mapping filesystem data to avoid copying unused and blank areas
[  61.5] Closing the overlay
[  62.2] Assigning disks to buses
[  62.2] Checking if the guest needs BIOS or UEFI to boot
[  62.2] Setting up the destination: -o rhv-upload -oc https://ovirt4410/ovirt-engine/api -os ovirt-data
[  81.6] Copying disk 1/1
█ 100% [****************************************]
[  91.3] Creating output metadata
[  96.0] Finishing off

real	 1m36.275s
user	 0m4.700s
sys	 0m14.070s


Rich.


-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/