Comment 5 for bug 2060695

Also, here's sgdisk output (the two disks have identical output apart from names):
isk /dev/vda: 83886080 sectors, 40.0 GiB
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 08D25DA2-9B12-45EA-B7EE-0978D2780899
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 83886046
Partitions will be aligned on 2048-sector boundaries
Total free space is 4029 sectors (2.0 MiB)

Number Start (sector) End (sector) Size Code Name
   1 2048 4095 1024.0 KiB EF02
   2 4096 83884031 40.0 GiB 8300