[SOLVED] VM Memory difference between proxmox and VM

[rmaziere]

On PVE 7.2-3, I created VM (linux Debian) with 4 GB of memory for example (or more), but inside the VM, this is only 915 MB.

debian@test:~$ free -mh
               total        used        free      shared  buff/cache   available
Mem:           915Mi       113Mi       759Mi       0.0Ki        42Mi       712Mi
Swap:             0B          0B          0B

debian@test:~$ egrep "MemTotal|DirectMap2M" /proc/meminfo
MemTotal:         937244 kB
DirectMap2M:     4128768 kB

Here, we can see the correct value : DirectMap2M, about 4 GB.
I tried both balloning : off and on.

I really don't understand.

If someone could help me, it would be great.

 

[leesteken]

Did you enable memory hot-plug in the VM options on Proxmox but not configure the Debian for hot-plug memory? Please try disabling Memory under VM Options, Hotplug.

 

[Matthias.]

To share your config, please show your VM config from /etc/pve/qemu-server/<vmid>.conf instead of screenshots

 

[Spoonman2002]

How much memory in total does the Proxmox host have?

 

[rmaziere]

Did you enable memory hot-plug in the VM options on Proxmox but not configure the Debian for hot-plug memory? Please try disabling Memory under VM Options, Hotplug.

Oh ! You're right !
I disabled the hot-plug and it works well.

Thanks a lot