backup on 1.9 and restore on 2.1 weird error

[copymaster]

Hi!

I have a cluster (proxmox 1.9) with 4 nodes running kvm machines windows 2008 and linux servers.
All machines have 8 GB RAM configured.
When i do a backup of all machines and restore them on a 4-node proxmox 2.1 cluster, all seems well.

But when i try to start a LINUX server on Proxmox 2.1, i get a strange error:
CANNOT ALLOCATE MEMORY.

WIndows servers can be started as expected!

When i configure the linux servers to use only 4GB ram on proxmox 2.1, the machine is starting..

WHY?

 

[tom]

2.1 uses vswap -its a complete different approach in contrast to 1.9. you should set the new RAM/SWAP settings via gui and click at least one time on save.

if your container runs out of memory, check inside the CT which programm consumes to much ram.

 

[copymaster]

Thank you, Tom

But it does not help.
I already checked different things on the server.
Server has 40 GB of RAM and there are 6 Virtual machines on it. All stopped.
on Terminal a "free" gave me:

total used free shared buffers cached
Mem: 4043060 2507044 1536016 0 7328 2209308
-/+ buffers/cache: 290408 3752652
Swap: 4194296 100424 4093872

So there is enough ram for the kvm machines.
I tested all settings and got the magic border:

When using exactly 7708 MB of RAM, the machine starts. But with 7709MB it fails.

I also tested a complete new VM with the same result. Any ideas?!

 

[dietmar]

What is the output of

# pveversion -v

 

[copymaster]

pve-manager: 2.1-13 (pve-manager/2.1/bdd3663d)
running kernel: 2.6.32-13-pve
proxmox-ve-2.6.32: 2.1-72
pve-kernel-2.6.32-11-pve: 2.6.32-66
pve-kernel-2.6.32-13-pve: 2.6.32-72
pve-kernel-2.6.32-12-pve: 2.6.32-68
lvm2: 2.02.95-1pve2
clvm: 2.02.95-1pve2
corosync-pve: 1.4.3-1
openais-pve: 1.1.4-2
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.92-2
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.8-1
pve-cluster: 1.0-27
qemu-server: 2.0-47
pve-firmware: 1.0-17
libpve-common-perl: 1.0-28
libpve-access-control: 1.0-24
libpve-storage-perl: 2.0-29
vncterm: 1.0-2
vzctl: 3.0.30-2pve5
vzprocps: 2.0.11-2
vzquota: 3.0.12-3
pve-qemu-kvm: 1.1-6
ksm-control-daemon: 1.1-1

 

[tom]

seems I misunderstood something. you run KVM guests only? so forget the vswap, this is for OpenVZ only.