On trusty; this complains but works.
ubuntu@ubuntu:~$ dpkg --list | grep util-linux
ii util-linux 2.20.1-5.1ubuntu20.9
amd64 Miscellaneous system utilities
ubuntu@ubuntu:~$ cat /proc/partitions
major minor #blocks name
253 0 10485760 vda
253 1 10484736 vda1
253 16 10485760 vdb
253 32 366 vdc
11 0 1048575 sr0
ubuntu@ubuntu:~$ sudo bash
sudo: unable to resolve host ubuntu
root@ubuntu:~# echo "0," | sfdisk --Linux --unit=S --force /dev/vdb
Checking that no-one is using this disk right now ...
OK
Disk /dev/vdb: 20805 cylinders, 16 heads, 63 sectors/track
sfdisk: ERROR: sector 0 does not have an msdos signature
/dev/vdb: unrecognized partition table type
Old situation:
No partitions found
Warning: bad partition start (earliest 1)
New situation:
Units = sectors of 512 bytes, counting from 0
Device Boot Start End #sectors Id System
/dev/vdb1 1 20971519 20971519 83 Linux
/dev/vdb2 0 - 0 0 Empty
/dev/vdb3 0 - 0 0 Empty
/dev/vdb4 0 - 0 0 Empty
Warning: no primary partition is marked bootable (active)
This does not matter for LILO, but the DOS MBR will not boot this disk.
Successfully wrote the new partition table
Re-reading the partition table ...
If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1
(See fdisk(8).)
root@ubuntu:~# cat /proc/partitions
major minor #blocks name
253 0 10485760 vda
253 1 10484736 vda1
253 16 10485760 vdb
253 17 10485759 vdb1
253 32 366 vdc
11 0 1048575 sr0
** Also affects: util-linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: util-linux (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: util-linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: util-linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: util-linux (Ubuntu Bionic)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1851438
Title:
cloud-init disk_setup fails to partition disk for Ubuntu18
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