Bug 1779120

Verify bug with builds:
virt-v2v-1.40.2-16.module+el8.1.1+5096+6326d3d5.x86_64
libguestfs-1.40.2-16.module+el8.1.1+5096+6326d3d5.x86_64

Steps to verify the bug:
1.Prepare a rhel7 guest,and encrypted the guest's disk during installing.
# lsblk
NAME                                          MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
sda                                             8:0    0    7G  0 disk  
├─sda1                                          8:1    0    1G  0 part  /boot
└─sda2                                          8:2    0    6G  0 part  
  ├─rhel_bootp--73--75--198-root              253:0    0  5.4G  0 lvm   /
  └─rhel_bootp--73--75--198-swap              253:1    0  604M  0 lvm   [SWAP]
sdb                                             8:16   0    1G  0 disk  
└─sdb1                                          8:17   0 1023M  0 part  
  └─luks-37c6d85c-4e6b-48b1-9ae6-d86a4ad3fa33 253:2    0 1021M  0 crypt 
    └─rhel-home                               253:3    0 1016M  0 lvm   /home
sdc                                             8:32   0    1G  0 disk  
└─sdc1                                          8:33   0 1023M  0 part  
  └─luks-e3a90385-a244-4510-b844-396dbce9209e 253:4    0 1021M  0 crypt 
    └─rhel7-var                               253:5    0 1016M  0 lvm   /var
sr0                                            11:0    1 1024M  0 rom  

2.Use virt-v2v to convert the above guest with --key parameter
# virt-v2v -ic vpx://root.73.141/data/10.73.75.219/?no_verify=1  esx6.7-rhel7.7-syscrypt-2luks  -o rhv -os 10.66.144.40:/home/nfs_export --password-file /home/passwd  --key "/dev/sdb1":key:12345678  --key "/dev/sdc1":key:12345678
[   0.0] Opening the source -i libvirt -ic vpx://root.73.141/data/10.73.75.219/?no_verify=1 esx6.7-rhel7.7-syscrypt-2luks
[   3.6] Creating an overlay to protect the source from being modified
[   5.1] Opening the overlay
[  45.2] Inspecting the overlay
[ 226.1] Checking for sufficient free disk space in the guest
[ 226.1] Estimating space required on target for each disk
[ 226.1] Converting Red Hat Enterprise Linux Server 7.7 (Maipo) to run on KVM
virt-v2v: warning: guest tools directory ‘linux/el7’ is missing from 
the virtio-win directory or ISO.

Guest tools are only provided in the RHV Guest Tools ISO, so this can 
happen if you are using the version of virtio-win which contains just the 
virtio drivers.  In this case only virtio drivers can be installed in the 
guest, and installation of Guest Tools will be skipped.
virt-v2v: This guest has virtio drivers installed.
[1870.5] Mapping filesystem data to avoid copying unused and blank areas
virt-v2v: warning: fstrim on guest filesystem /dev/rhel7/var failed.  
Usually you can ignore this message.  To find out more read "Trimming" in 
virt-v2v(1).

Original message: fstrim: fstrim: /sysroot/: the discard operation is not 
supported
virt-v2v: warning: fstrim on guest filesystem /dev/rhel/home failed.  
Usually you can ignore this message.  To find out more read "Trimming" in 
virt-v2v(1).

Original message: fstrim: fstrim: /sysroot/: the discard operation is not 
supported
[1874.8] Closing the overlay
[1875.1] Assigning disks to buses
[1875.1] Checking if the guest needs BIOS or UEFI to boot
[1875.1] Initializing the target -o rhv -os 10.66.144.40:/home/nfs_export
[1875.5] Copying disk 1/3 to /tmp/v2v.fNBCXb/5792ab14-7746-4340-a27d-845dc12b8db9/images/99621598-9b08-4ea0-a0f8-a91848d62d99/5465714f-ab2c-4549-9045-bd322aae69a3 (raw)
    (100.00/100%)
[2264.5] Copying disk 2/3 to /tmp/v2v.fNBCXb/5792ab14-7746-4340-a27d-845dc12b8db9/images/89fef06c-26f0-4c57-bdd4-b73bb88c39d9/30042db9-a25a-487e-b17e-b7c345a4d7c4 (raw)
    (100.00/100%)
[2357.3] Copying disk 3/3 to /tmp/v2v.fNBCXb/5792ab14-7746-4340-a27d-845dc12b8db9/images/6f468fde-59bc-4616-8c9e-4f9c9140ff4f/72c83a84-b1a9-414b-b510-a224567d2c65 (raw)
    (100.00/100%)
[2444.6] Creating output metadata
[2444.6] Finishing off

3.virt-v2v can convert guest successfully,then log into rhv to check the new guest
3.1 The guest can use password to unlock the encrypted luks and boot normally 
3.2 The guest can pass all general checkpoints.

Result:When use parameter --key more than once in command,virt-v2v will not crash and finish the conversion successfully.So change the bug from ON_QA to VERIFIED.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:0404