[Bug 1507505] [NEW] NVME partition names incorrect; should be nvme0p1, not nvme0n1

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On T460s, I tried to install the wily daily build,  it could detect the
nvme partition, at the end of installation, it prompt ' Unable to
install GRUB in /dev/nvme'

Oct 19 16:47:01 ubuntu grub-installer: info: Installing grub on '/dev/nvme'
Oct 19 16:47:01 ubuntu grub-installer: info: grub-install does not support --no-floppy
Oct 19 16:47:01 ubuntu grub-installer: info: Running chroot /target grub-install  --force "/dev/nvme"
Oct 19 16:47:01 ubuntu grub-installer: Installing for i386-pc platform.
Oct 19 16:47:02 ubuntu grub-installer: grub-install: error: cannot find a GRUB drive for /dev/nvme.  Check your device.map.
Oct 19 16:47:02 ubuntu grub-installer: error: Running 'grub-install  --force "/dev/nvme"' failed.
Oct 19 16:48:30 ubuntu systemd[1]: Started Session c2 of user ubuntu.

Why it install to /dev/nvme, while not the /dev/nvme0n1?

$ sudo grub-install --boot-directory /target/boot/grub /dev/nvme
Installing for i386-pc platform
grub-install: error: cannot find a GRUB drive for /dev/nvme.  Check your device.map.

$ sudo grub-install --boot-directory /target/boot/grub /dev/nvme0
Installing for i386-pc platform
grub-install: error: attempt to read or write outside of disk `hostdisk/dev/nvme0'.

$ sudo grub-install --boot-directory /target/boot/grub /dev/nvme0n1
Installing for i386-pc platform
Inatalltion finished. No error reported.

But even it's no error reported, I still cant' find any grub after
reboot.

** Affects: grub-installer
     Importance: Undecided
         Status: New

** Affects: linux
     Importance: Unknown
         Status: Unknown

** Affects: grub-installer (Ubuntu)
     Importance: High
     Assignee: Mathieu Trudel-Lapierre (cyphermox)
         Status: Triaged


** Tags: bot-stop-nagging
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NVME partition names incorrect; should be nvme0p1, not nvme0n1
https://bugs.launchpad.net/bugs/1507505
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