Unable to allocate RAM to VM as despite of having enough memory

[Sujith Arangan]

I got 1024 GB RAM in my host and I am just running 1 VM. But I am unable to allocate more RAMs. I am getting an error of

TASK ERROR: Total memory is bigger than 524288MB

When I check the free memory in the proxmox terminal I see enough memory left.

free -m
total used free shared buff/cache available
Mem: 1031760 10953 997234 77 29464 1020806
Swap: 8191 0 8191

The VM is with NUMA enabled CPU. If the NUMA is disabled. The VM won't start.

Kindly help me on this.

 

[bbgeek17]

It seems like Max Memory may be CPU model dependent. What type of CPU are you using for this VM? You may want to try with "host".

Good luck

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

 

[Sujith Arangan]

It seems like Max Memory may be CPU model dependent. What type of CPU are you using for this VM? You may want to try with "host".

Good luck

---

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

It's an AMD processor.

Vendor ID: AuthenticAMD
BIOS Vendor ID: Advanced Micro Devices, Inc.
Model name: AMD EPYC 9274F 24-Core Processor
BIOS Model name: AMD EPYC 9274F 24-Core Processor Unknown CPU @ 4.0GHz
BIOS CPU family: 107

And the VM configuration is as below

bios: ovmf
boot: order=scsi0;ide2;net0
cores: 96
cpu: EPYC
efidisk0: local-lvm:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ide2: none,media=cdrom
memory: 953674
meta: creation-qemu=8.1.5,ctime=1715882860
name: strata-2
net0: virtio=BC:24:11:61:A1:42,bridge=vmbr0
numa: 0
ostype: l26
parent: forcloning
runningcpu: EPYC,enforce,+kvm_pv_eoi,+kvm_pv_unhalt,vendor=AuthenticAMD
runningmachine: pc-i440fx-8.1+pve0
scsi0: local-lvm:vm-100-disk-1,iothread=1,size=500G
scsi1: local-lvm:vm-100-disk-2,iothread=1,size=50G
scsihw: virtio-scsi-single
smbios1: uuid=3e9ae1e0-2879-480c-82c1-c5baeffae580
snaptime: 1716355811
sockets: 1
vmgenid: 56947432-0c0b-461f-a6c2-b7f4d324bc76
vmstate: local-lvm:vm-100-state-newclone

I made the CPU type to host and still I get the error TASK ERROR: memory size (972800) must be aligned to 16384 for hotplugging

 

[bbgeek17]

I made the CPU type to host and still I get the error TASK ERROR: memory size (972800) must be aligned to 16384 for hotplugging

972800 does not divide by 16384 by a whole number. Try 983040

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

 

[Sujith Arangan]

I am getting the error below. I am unable to assign more than 16 GB to the VM
TASK ERROR: memory size (983040) must be aligned to 16384 for hotplugging

 

[bbgeek17]

Have you tried to shutdown the VM and make your changes offline?

---

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

 

[Sujith Arangan]

Have you tried to shutdown the VM and make your changes offline?

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

Yes that's exactly what I am doing. The VMs don;t even turn on after making the changes.