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AWS configuration issue and question. On Debian, during install we can set-up LVM configuration, which allows us to set up root / mounting point.

So normally for me it would look like this with Debian 9: 

NAME FSTYPE LABEL UUID MOUNTPOINT sda ├─sda1 ext2 e9f69388-1854-45eb-8467-75211b2b22a9 /boot ├─sda2 └─sda5 LVM2_member mL4Ktn-n87F-2s1y-Jsiu-BFdQ-OVXg-CP6OAO ├─main--vg-root ext4 a0781bd3-cc8f-49a6-bc90-f973e5296a2d / └─main--vg-swap_1 swap a5c9a5fe-14e3-499d-94cf-d6c2640d2c9a [SWAP]

On AWS, unfortunately we cannot create boot mount point during installation, so my configuration looks like this:

NAME FSTYPE LABEL UUID MOUNTPOINT nvme1n1 LVM2_member i5HVTe-yn1Q-fhyK-kxMz-DpfO-SjE1-DgyMfi ├─main--vg-root ext4 7e38e77e-603f-450f-a8b6-b7c199f021dd /home └─main--vg-swap_1 swap c5ad16a3-2eb2-4d87-b22d-29a698f34a38 nvme0n1 └─nvme0n1p1 ext4 13ea901b-a08d-41a5-8e04-521c4415f9aa /

My question is - can I move somehow /root mounting point to my main--vg-root ? Or maybe if not, it would be great to use two mounting points into one VG.

Best solution would be if I could use set-up nvme0n1p1 during LVM configuration, but I can't use partition that is in use, and unfortunately I cannot use any Live CD there to set it up?

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I have made workaround with creating additional mounting point on my LVM volume and just create binds for 3 folders which were crucial for me.

So, following configuration in my question : 

 NAME FSTYPE LABEL UUID MOUNTPOINT nvme1n1 LVM2_member i5HVTe-yn1Q-fhyK-kxMz-DpfO-SjE1-DgyMfi ├─main--vg-root ext4 7e38e77e-603f-450f-a8b6-b7c199f021dd /home └─main--vg-swap_1 swap c5ad16a3-2eb2-4d87-b22d-29a698f34a38 nvme0n1 └─nvme0n1p1 ext4 13ea901b-a08d-41a5-8e04-521c4415f9aa /

Afterwards I've created data folder under /mnt/data/ afterwards /mnt/data/var, /mnt/data/home and /mnt/data/tmp

I've copy all data from original folders to newly created folders using cp -ax .

Afterwards edited /etc/fstab that changes in system will be applied on next reboot.

# Mounting point /dev/main-vg/root /mnt/data ext4 errors=remount-ro 0 1 # Binds /mnt/data/home /home none bind 0 0 /mnt/data/var /var none bind 0 0 /mnt/data/tmp /tmp none bind 0 0

This workaround was created with help of another stackoverflow link Moving /var, /home to separate partition

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