[linux-lvm] Booting through LVM. Possible ?

[g***@free.fr]

Hello !
I've got this new laptop which has a traditional disk and an M.2 NGFF SSD disk. So for the first time I'll plan to use LVM on a laptop. (I constantly use LVM at work on bare metal or virtual systems).
The disk of my laptop is 4K sector size, GPT partitioned with an EFI partition for some utilities and Windows boot, and the SSD can be partitioned.
As I plan to install a very recent Ubuntu LTS release I wonder is I still need a plain partition for the /boot or if current Grub version can handle /boot out of an lvm lv ?
I've seen a lot of negative answer so I ask "at the source" ;-)
Thank you in advance for your answer.

[Zdenek Kabelac]

Post by g***@free.fr
Hello !
I've got this new laptop which has a traditional disk and an M.2 NGFF SSD disk. So for the first time I'll plan to use LVM on a laptop. (I constantly use LVM at work on bare metal or virtual systems).
The disk of my laptop is 4K sector size, GPT partitioned with an EFI partition for some utilities and Windows boot, and the SSD can be partitioned.
As I plan to install a very recent Ubuntu LTS release I wonder is I still need a plain partition for the /boot or if current Grub version can handle /boot out of an lvm lv ?
I've seen a lot of negative answer so I ask "at the source" ;-)
Thank you in advance for your answer.

I'd strongly recommend to use separate /boot partition.

Lvm2 does not support grub - although some distributions pretends so and in
some cases, like plain linear volume, it somehow works...

Zdenek

[Georges Giralt]

Thank you Zdenek. You confirm what I thought.
As this is my machine, it is not for experimenting. ;-)
So I'll make an EXT4 formated /boot primary partition and use everything
else for LVM .....

Post by Zdenek Kabelac

Post by g***@free.fr
Hello !
I've got this new laptop which has a traditional disk and an M.2 NGFF
SSD disk. So for the first time I'll plan to use LVM on a laptop. (I
constantly use LVM at work on bare metal or virtual systems).
The disk of my laptop is 4K sector size, GPT partitioned with an EFI
partition for some utilities and Windows boot, and the SSD can be
partitioned.
As I plan to install a very recent Ubuntu LTS release I wonder is I
still need a plain partition for the /boot or if current Grub version
can handle /boot out of an lvm lv ?
I've seen a lot of negative answer so I ask "at the source" ;-)
Thank you in advance for your answer.

I'd strongly recommend to use separate /boot partition.
Lvm2 does not support grub - although some distributions pretends so
and in some cases, like plain linear volume, it somehow works...
Zdenek
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