The outout of `fdisk -l` is confused on the vm

[liaoya]

I use the following command to create a image.

sudo -E ./alpine-make-vm-image -f qcow2 -s 512M --mirror-uri http://mirrors.ustc.edu.cn/alpine -k lts -p "e2fsprogs-extra parted" -t -- alpinelinux.qcow2

I use virt-install create a vm with the following command

virt-install --name alpinelinux --os-variant alpinelinux3.8 --noautoconsole --import --memory=128 --vcpus=1 --cpu host --disk path=/work/libvirt/runtime/alpinelinux.qcow2,bus=virtio --network bridge=virbr0,model=virtio

Then attach the console with virsh console alpinelinux

Connected to domain alpinelinux
Escape character is ^]

Welcome to Alpine Linux 3.15
Kernel 5.15.16-0-lts on an x86_64 (/dev/ttyS0)

localhost login: root
Welcome to Alpine!

The Alpine Wiki contains a large amount of how-to guides and general
information about administrating Alpine systems.
See <http://wiki.alpinelinux.org/>.

You can setup the system with the command: setup-alpine

You may change this message by editing /etc/motd.

localhost:~# fdisk -l
Disk /dev/vda: 512 MB, 536870912 bytes, 1048576 sectors
1040 cylinders, 16 heads, 63 sectors/track
Units: sectors of 1 * 512 = 512 bytes

Device  Boot StartCHS    EndCHS        StartLBA     EndLBA    Sectors  Size Id Type
/dev/vda1 09 187,180,14  784,0,13    3224498923 3657370039  432871117  206G  7 HPFS/NTFS
/dev/vda2 f4 906,235,61  262,116,59  3272020941  930513678 1953460034  931G 16 Hidden FAT16
/dev/vda3 20 370,101,50  10,114,13            0          0          0     0 6f Unknown
/dev/vda4    0,0,0       0,0,0         50200576  974536369  924335794  440G  0 Empty

Partition table entries are not in disk order
localhost:~# df -h
Filesystem                Size      Used Available Use% Mounted on
devtmpfs                 10.0M         0     10.0M   0% /dev
shm                      47.5M         0     47.5M   0% /dev/shm
/dev/vda                487.9M    120.9M    331.2M  27% /
tmpfs                    19.0M     48.0K     19.0M   0% /run
cgroup_root              10.0M         0     10.0M   0% /sys/fs/cgroup

localhost:~# parted -l /dev/vda
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 537MB
Sector size (logical/physical): 512B/512B
Partition Table: loop
Disk Flags:

Number  Start  End    Size   File system  Flags
 1      0.00B  537MB  537MB  ext4

It's obvious that fdisk -l /dev/vda return the wrong information. I searched with google but do not found an answer. Did you know why?

[jirutka]

This tool doesn’t create partitions on the disk (it doesn’t make any sense for virtual disks, see --help and https://github.com/alpinelinux/alpine-make-vm-image/issues/1#issuecomment-837342096), so fdisk is somehow confused. What’s the problem here? It seems that the system booted correctly.