Disk usage explanations

[Narsil]

Hi there,

Could someone explain me what i read here (I'm new in this, please forgive me ...) :

/dev/sdk is a SSD m.2 128 Gb stick on which I installed proxmox



And the LVM is showed very full ...


I don't think I have anything else than proxmox on this volume, how can I investigate that, and correct (128 Gb should be plenty enough for this no ?)

I also have this LVM-Thin volume, at 100%, how can I know what's in there ?


Thanks

 

[Pifouney]

In CLI, check result of "pvs" and "lvs" command

 

[Narsil]

root@proxmox:~# pvs
  PV         VG  Fmt  Attr PSize    PFree
  /dev/sdk3  pve lvm2 a--  <118.24g 14.75g

root@proxmox:~# lvs
  LV            VG  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  data          pve twi-aotzD- <47.93g             100.00 3.23                           
  root          pve -wi-ao---- <37.56g                                                   
  swap          pve -wi-ao----  16.00g                                                   
  vm-100-disk-0 pve Vwi-a-tz-- 128.00g data        35.46                                 
  vm-101-disk-0 pve Vwi-a-tz--  16.00g data        15.87

 

[Pifouney]

No problem for me, all your data is allocated at your VM 100. If you initialize all the virtual disk, it's legit that's thin pool calling you he's full

 

[Narsil]

Ok, thanks, but I think I don't get it with physical/LVM/LVM-Thin story, am I right here ?

The physical /dev/sdk (128Gb) is parted in 3 :

"pve" is a logical volume using the whole partition /dev/sdk3, in which I have

• "root", "swap" and "data" from OS and proxmox, "data" being LVM-thin with is in fact full, because it's the purpose of LVM-Thin
• VM-100 (128Gb)
• VM-101 (16Gb)

That's too much for 128Gb ... no ?

 

[Narsil]

Sorry, I'll need some more explanations.

So my VM100 (TrueNAS) is using a 128 Gb SSD partion for OS, called VM_1, formatted LVM-Thin





The volume VM_1 is displayed as full with 51.46 Gb


Question 1 : as LVM-Thin, VM_1 should automatically expand when needed, up to 128Gb, right ?
Question 2 : the VM (TrueNAS) does not boot, but that is not due to VM_1 been full, right ?

Thanks