Install Proxmox 8.1.4 with max LVM Thin Storage and no Directory Storage

[ionmang20]

Hi, I'm new to proxmox and I would like to do a custom install, but not sure how to achieve this
I would like to install it on /dev/sda and beside that the OS needs, I would like the rest of the disk to be LVM Thin Storage without any Directory Storage or LVM Storage.
I would like to create the Directory Storage and LVM Storage on other disks
Here is my harddisk options at installation time

/dev/sda	ext4
hdsize	223.0 GB
swapsize	empty
maxroot	empty
minfree	0 GB
maxvz	0 GB

after the installation this is what I see

root@pve:~# lsblk -f
NAME         FSTYPE      FSVER    LABEL UUID                                   FSAVAIL FSUSE% MOUNTPOINTS
sda                                                                                           
├─sda1                                                                                       
├─sda2       vfat        FAT32          781C-EFE0                              1010.3M     1% /boot/efi
└─sda3       LVM2_member LVM2 001       5vKpoe-XFNo-SfQ6-i6B7-pIcR-ONfW-ZGlAf8               
  ├─pve-swap swap        1              624a775e-a524-4a64-ac3c-cf6666f494cf                  [SWAP]
  └─pve-root ext4        1.0            fcb7e3fd-9ddf-42dd-844a-a2fdb72c62f2     58.3G     4% /
sdb                                                                                           
sdc

root@pve:~# fdisk /dev/sda

Welcome to fdisk (util-linux 2.38.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

This disk is currently in use - repartitioning is probably a bad idea.
It's recommended to umount all file systems, and swapoff all swap
partitions on this disk.


Command (m for help): p

Disk /dev/sda: 223.57 GiB, 240057409536 bytes, 468862128 sectors
Disk model: KINGSTON SA400S3
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 2C09C919-B558-469F-B3FA-DB861C54DAEA

Device       Start       End   Sectors   Size Type
/dev/sda1       34      2047      2014  1007K BIOS boot
/dev/sda2     2048   2099199   2097152     1G EFI System
/dev/sda3  2099200 468862094 466762895 222.6G Linux LVM

In Datacenter > Storage I see the local Directory Type storage, but this does not appear in pve > Disks > Directory
In local (pve) I see this is Directory Type and 69 GB in size, but I don't want to have the the Directory on this disk, but on /dev/sdc
Is there a way to install the OS and only LVM or LVM Thin on /dev/sda, so then I can create a DIrectory Storage on /dev/sda?
Can this be done at installation time or after?
I could not find a way to remove this local Directory Storage.
It is very possible I don't understand what proxmox needs or what options I have at installation time.
I would appreciate a clarification or some links where this is explained for beginners.

 

[LnxBil]

IIRC, you can set the root disk size in the installer, which should imply a smaller volume for root. You can also boot a live linux distro and resize your root disk in order to shrink it.

 

[ionmang20]

I'm ok with the root size of 58 GB, this is the OS.
I don't understand where is the rest of my disk.
I would like to create a LVM-Thin with the rest of the disk, but not sure how to go about this.
It could simply be my lack of knowledge in this area, but I would appreciate any help on this.

 

[ionmang20]

after more looking around and googling I found that I can create a logical volume in the pve volume group free space

root@pve:~# vgs
  VG  #PV #LV #SN Attr   VSize    VFree   
  pve   1   2   0 wz--n- <222.57g <148.93g
root@pve:~# lvs
  LV   VG  Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root pve -wi-ao---- 65.64g                                                   
  swap pve -wi-ao----  8.00g

then I've created data logical volume

root@pve:~# lvcreate -n data -l 100%FREE pve
  Logical volume "data" created.
root@pve:~# lvs
  LV   VG  Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  data pve -wi-a----- <148.93g                                                   
  root pve -wi-ao----   65.64g                                                   
  swap pve -wi-ao----    8.00g                                                   
root@pve:~# vgs
  VG  #PV #LV #SN Attr   VSize    VFree
  pve   1   3   0 wz--n- <222.57g    0

now, I'm not sure how to add this data to proxmox storage

 

[LnxBil]

Now you created what you didn't want a potential directory storage. It looks like you created a thick lvm in the beginning. Please refer to this page.