Using my Thinpool for ISOs.

[KaiTechUnleashed]

So currently, I have a Thin-pool that i use to store my VM images, and right now my small boot drive doesn't have enough space for more ISO files. What I want to do is to use part of my SSD-Thin thinpool for isos. Say 64 gb. I have looked at other threads, but I am kindof a proxmox/linux noob, so help would be appreciated.

P.S. I would like to do it for both nodes but I think I can figure it out on my own. (LOL i know one node is named node-1 and the other node-b. If anyone knows how to change it to a and b without losing connection between nodes that would be nice too. )

 

[bbgeek17]

https://forum.proxmox.com/threads/make-lvm-into-iso-storage.123548/

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[Alecz]

So there is no way to do it from the Web Interface?

That post is almost the same question, and the answer it to follow the wiki: https://pve.proxmox.com/wiki/Logical_Volume_Manager_(LVM)

I wonder if wiki is missing a step to create the Pool, becase when I do them (for /dev/sda in my case), I get:
"Pool data not found in Volume group data."

# sgdisk -N 1 /dev/sda
Creating new GPT entries in memory.
The operation has completed successfully.

# pvcreate --metadatasize 250k -y -ff /dev/sda1
  Physical volume "/dev/sda1" successfully created.
 
# vgcreate data /dev/sda1
  Volume group "data" successfully created

# lvcreate -n vz -V 40G data/data
  Pool data not found in Volume group data.
 
# vgs
  VG   #PV #LV #SN Attr   VSize    VFree
  data   1   0   0 wz--n- <223.57g <223.57g
  pve    1   2   0 wz--n-   12.91g    4.00m
 
# lvs
  LV   VG  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root pve -wi-ao---- <11.91g
  swap pve -wi-ao----   1.00g

 

[Alecz]

What I did was to first create two LVM thin pools (https://pve.proxmox.com/wiki/Storage:_LVM_Thin):

# lvcreate -L 40G -n local data
  Logical volume "local" created.
 
# lvcreate -L 182G -n local-lvm data
  Logical volume "local-lvm" created.

# lvconvert --type thin-pool data/local
  Thin pool volume with chunk size 64.00 KiB can address at most <15.88 TiB of data.
  WARNING: Converting data/local to thin pool's data volume with metadata wiping.
  THIS WILL DESTROY CONTENT OF LOGICAL VOLUME (filesystem etc.)
Do you really want to convert data/local? [y/n]: y
  Converted data/local to thin pool.

# lvcreate -n vz -V 40G -T data/local
  Logical volume "vz" created.

# mkfs.ext4 /dev/data/vz

# rm -rf /var/lib/vz/*

#echo '/dev/data/vz /var/lib/vz ext4 defaults 0 2' >> /etc/fstab

# mount -a
mount: (hint) your fstab has been modified, but systemd still uses
       the old version; use 'systemctl daemon-reload' to reload.

# systemctl daemon-reload

# mount -a

Now, the "local" storage uses the newly created 40G logical volume.

I find this to be very convoluted because while the web interface allows you to thin-provision a new disk, it doesn't let you use it for ISOs.