[PVE-User] VM migration from k3.10 to k2.6.32 OK but migrated VM hung

[Alexandre DERUMIER]

>>I have noticed that migration from node4 to any other node (3.10 to 
>>2.6.32) ends with OK, but the VM is hung

It's possible that kernel 3.10 kvm module have fixes not available in 2.6.32.

for example new cpu flags exposing in guest.

That could explain why the migration hang.

(you should never migrate from new to older kernel, try to keep same kernel on all nodes)





----- Mail original -----
De: "Eneko Lacunza" <elacunza at binovo.es>
À: "proxmoxve" <pve-user at pve.proxmox.com>
Envoyé: Mercredi 19 Août 2015 13:01:05
Objet: [PVE-User] VM migration from k3.10 to k2.6.32 OK but migrated VM	hung

Hi all, 

We have a cluster of 4 proxmox nodes, all have 2 ceph osds and VMs 
running on them. 
Node kernel version and uptodate status is: (version detail bellow). 

- node1: 2.6.32 kernel, 2 month behind versions 
- node2: 2.6.32 kernel, 2 month behind versions 
- node3: 2.6.32 kernel, up to date versions 
- node4: 3.10 kernel, 2 month behind versions 

I have noticed that migration from node4 to any other node (3.10 to 
2.6.32) ends with OK, but the VM is hung, no console nor network reply. 
Migration from 2.6.32 to 3.10 kernel works ok, as does 2.6.32 to 2.6.32 . 

Is this a known bug? 

I've tried with default kvm64 processor, 256MB and 4 GB RAM, and 1 and 2 
cores. Guests Centos with 2.6.32 kernel and Debian 8. 

Thanks 
Eneko 

NODE1 
# pveversion -v 
proxmox-ve-2.6.32: 3.4-156 (running kernel: 2.6.32-39-pve) 
pve-manager: 3.4-6 (running version: 3.4-6/102d4547) 
pve-kernel-2.6.32-32-pve: 2.6.32-136 
pve-kernel-2.6.32-39-pve: 2.6.32-156 
pve-kernel-2.6.32-37-pve: 2.6.32-150 
pve-kernel-2.6.32-34-pve: 2.6.32-140 
lvm2: 2.02.98-pve4 
clvm: 2.02.98-pve4 
corosync-pve: 1.4.7-1 
openais-pve: 1.1.4-3 
libqb0: 0.11.1-2 
redhat-cluster-pve: 3.2.0-2 
resource-agents-pve: 3.9.2-4 
fence-agents-pve: 4.0.10-2 
pve-cluster: 3.0-17 
qemu-server: 3.4-6 
pve-firmware: 1.1-4 
libpve-common-perl: 3.0-24 
libpve-access-control: 3.0-16 
libpve-storage-perl: 3.0-33 
pve-libspice-server1: 0.12.4-3 
vncterm: 1.1-8 
vzctl: 4.0-1pve6 
vzprocps: 2.0.11-2 
vzquota: 3.1-2 
pve-qemu-kvm: 2.2-10 
ksm-control-daemon: 1.1-1 
glusterfs-client: 3.5.2-1 

NODE2 
# pveversion -v 
proxmox-ve-2.6.32: 3.4-156 (running kernel: 2.6.32-39-pve) 
pve-manager: 3.4-6 (running version: 3.4-6/102d4547) 
pve-kernel-2.6.32-32-pve: 2.6.32-136 
pve-kernel-2.6.32-39-pve: 2.6.32-156 
pve-kernel-2.6.32-37-pve: 2.6.32-150 
lvm2: 2.02.98-pve4 
clvm: 2.02.98-pve4 
corosync-pve: 1.4.7-1 
openais-pve: 1.1.4-3 
libqb0: 0.11.1-2 
redhat-cluster-pve: 3.2.0-2 
resource-agents-pve: 3.9.2-4 
fence-agents-pve: 4.0.10-2 
pve-cluster: 3.0-17 
qemu-server: 3.4-6 
pve-firmware: 1.1-4 
libpve-common-perl: 3.0-24 
libpve-access-control: 3.0-16 
libpve-storage-perl: 3.0-33 
pve-libspice-server1: 0.12.4-3 
vncterm: 1.1-8 
vzctl: 4.0-1pve6 
vzprocps: 2.0.11-2 
vzquota: 3.1-2 
pve-qemu-kvm: 2.2-10 
ksm-control-daemon: 1.1-1 
glusterfs-client: 3.5.2-1 

NODE3 
# pveversion -v 
proxmox-ve-2.6.32: 3.4-160 (running kernel: 2.6.32-40-pve) 
pve-manager: 3.4-9 (running version: 3.4-9/4b51d87a) 
pve-kernel-2.6.32-40-pve: 2.6.32-160 
pve-kernel-2.6.32-32-pve: 2.6.32-136 
pve-kernel-2.6.32-39-pve: 2.6.32-157 
lvm2: 2.02.98-pve4 
clvm: 2.02.98-pve4 
corosync-pve: 1.4.7-1 
openais-pve: 1.1.4-3 
libqb0: 0.11.1-2 
redhat-cluster-pve: 3.2.0-2 
resource-agents-pve: 3.9.2-4 
fence-agents-pve: 4.0.10-3 
pve-cluster: 3.0-18 
qemu-server: 3.4-6 
pve-firmware: 1.1-4 
libpve-common-perl: 3.0-24 
libpve-access-control: 3.0-16 
libpve-storage-perl: 3.0-33 
pve-libspice-server1: 0.12.4-3 
vncterm: 1.1-8 
vzctl: 4.0-1pve6 
vzprocps: 2.0.11-2 
vzquota: 3.1-2 
pve-qemu-kvm: 2.2-11 
ksm-control-daemon: 1.1-1 
glusterfs-client: 3.5.2-1 

NODE4: 
# pveversion -v 
proxmox-ve-2.6.32: 3.4-156 (running kernel: 3.10.0-4-pve) 
pve-manager: 3.4-6 (running version: 3.4-6/102d4547) 
pve-kernel-3.10.0-4-pve: 3.10.0-17 
pve-kernel-2.6.32-39-pve: 2.6.32-156 
pve-kernel-2.6.32-37-pve: 2.6.32-150 
pve-kernel-2.6.32-34-pve: 2.6.32-140 
lvm2: 2.02.98-pve4 
clvm: 2.02.98-pve4 
corosync-pve: 1.4.7-1 
openais-pve: 1.1.4-3 
libqb0: 0.11.1-2 
redhat-cluster-pve: 3.2.0-2 
resource-agents-pve: 3.9.2-4 
fence-agents-pve: 4.0.10-2 
pve-cluster: 3.0-17 
qemu-server: 3.4-6 
pve-firmware: 1.1-4 
libpve-common-perl: 3.0-24 
libpve-access-control: 3.0-16 
libpve-storage-perl: 3.0-33 
pve-libspice-server1: 0.12.4-3 
vncterm: 1.1-8 
vzctl: 4.0-1pve6 
vzprocps: 2.0.11-2 
vzquota: 3.1-2 
pve-qemu-kvm: 2.2-10 
ksm-control-daemon: 1.1-1 
glusterfs-client: 3.5.2-1 



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Binovo IT Human Project, S.L. 
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