Bug 2151882

This bug was initially created as a copy of Bug #2089623

Description of problem:

The following fix was included in RHEL 8.6-z but is not
present in RHEL 9.0-z.  (It is fixed in RHEL 9.1 and 9.2)

https://bugzilla.redhat.com/show_bug.cgi?id=2089623#c12
https://github.com/libguestfs/virt-v2v/commit/31bf5db25bcfd8a9f5a48cc0523abae28861de9a

How reproducible:
100%

Steps to Reproduce:

1.Convert a rhel8.6 guest from VMware via vddk7.0.3 by v2v
#  virt-v2v -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64 -it vddk -io vddk-libdir=/home/vddk7.0.3 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21 -ip /home/passwd
[   0.0] Opening the source -i libvirt -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64 -it vddk  -io vddk-libdir=/home/vddk7.0.3 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21
[   1.6] Creating an overlay to protect the source from being modified
[   2.3] Opening the overlay
[   6.9] Inspecting the overlay
[  46.0] Checking for sufficient free disk space in the guest
[  46.0] Estimating space required on target for each disk
[  46.0] Converting Red Hat Enterprise Linux 8.6 (Ootpa) to run on KVM
virt-v2v: error: no installed kernel packages were found.

This probably indicates that virt-v2v was unable to inspect this guest 
properly.

If reporting bugs, run virt-v2v with debugging enabled and include the 
complete output:

  virt-v2v -v -x [...]


2.Convert a rhel8.6 guest from VMware via vddk6.7 by v2v

#  virt-v2v -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64 -it vddk -io vddk-libdir=/home/vddk6.7 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21 -ip /home/passwd
[   0.0] Opening the source -i libvirt -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64 -it vddk  -io vddk-libdir=/home/vddk6.7 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21
[   1.6] Creating an overlay to protect the source from being modified
[   2.2] Opening the overlay
[   9.5] Inspecting the overlay
[  48.5] Checking for sufficient free disk space in the guest
[  48.5] Estimating space required on target for each disk
[  48.5] Converting Red Hat Enterprise Linux 8.6 (Ootpa) to run on KVM
virt-v2v: error: no installed kernel packages were found.

This probably indicates that virt-v2v was unable to inspect this guest 
properly.

If reporting bugs, run virt-v2v with debugging enabled and include the 
complete output:

  virt-v2v -v -x [...]


3.Convert a rhel8.6 guest from VMware without vddk by v2v
virt-v2v -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64  -ip /home/passwd
[   0.0] Opening the source -i libvirt -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.6-x86_64

[   2.6] Creating an overlay to protect the source from being modified
[   3.6] Opening the overlay
[  35.0] Inspecting the overlay
[ 296.6] Checking for sufficient free disk space in the guest
[ 296.6] Estimating space required on target for each disk
[ 296.6] Converting Red Hat Enterprise Linux 8.6 (Ootpa) to run on KVM
virt-v2v: error: no installed kernel packages were found.

This probably indicates that virt-v2v was unable to inspect this guest 
properly.

If reporting bugs, run virt-v2v with debugging enabled and include the 
complete output:

  virt-v2v -v -x [...]


Actual results:
As above description

Expected results:
Virt-v2v can convert rhel8.6 guest from VMware on rhel8.6

Additional info:
1.Virt-v2v can convert rhel8.5 guest from VMware on rhel8.6

# virt-v2v -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.5-x86_64 -it vddk -io vddk-libdir=/home/vddk7.0.3 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21 -ip /home/passwd
[   0.0] Opening the source -i libvirt -ic vpx://root.227.27/data/10.73.199.217/?no_verify=1 esx7.0-rhel8.5-x86_64 -it vddk  -io vddk-libdir=/home/vddk7.0.3 -io vddk-thumbprint=76:75:59:0E:32:F5:1E:58:69:93:75:5A:7B:51:32:C5:D1:6D:F1:21
[   1.6] Creating an overlay to protect the source from being modified
[   2.3] Opening the overlay
[   6.6] Inspecting the overlay
[  14.0] Checking for sufficient free disk space in the guest
[  14.0] Estimating space required on target for each disk
[  14.0] Converting Red Hat Enterprise Linux 8.5 (Ootpa) to run on KVM
virt-v2v: This guest has virtio drivers installed.
[  87.2] Mapping filesystem data to avoid copying unused and blank areas
[  87.7] Closing the overlay
[  87.9] Assigning disks to buses
[  87.9] Checking if the guest needs BIOS or UEFI to boot
[  87.9] Initializing the target -o libvirt -os default
[  88.0] Copying disk 1/1 to /var/lib/libvirt/images/esx7.0-rhel8.5-x86_64-sda (raw)
    (60.22/100%)


2.Can't reproduce the bug on rhel9.1
virt-v2v-2.0.5-1.el9.x86_64
libguestfs-1.48.2-2.el9.x86_64
guestfs-tools-1.48.1-1.el9.x86_64
nbdkit-server-1.30.5-1.el9.x86_64
libnbd-1.12.2-1.el9.x86_64