[ClusterLabs] VM failure during shutdown

[Vaggelis Papastavros]

Dear friends ,

( i send the same messages again in order to conform with the forum text 
formatting )

Many Thanks for your brilliant answers ,

Ken your suggestion :

"The second problem is that you have an ordering constraint but no 
colocation constraint. With your current setup, windows_VM has to start

after the storage, but it doesn't have to start on the same node. You 
need a colocation constraint as well, to ensure they start on the sam

node."*
*


for the storage i have the following complete steps:

pcs resource create ProcDRBD_SigmaVMs ocf:linbit:drbd 
drbd_resource=sigma_vms drbdconf=/etc/drbd.conf op monitor interval=10s

pcs resource master clone_ProcDRBD_SigmaVMs ProcDRBD_SigmaVMs 
master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true

pcs resource create StorageDRBD_SigmaVMs Filesystem device="/dev/drbd1" 
directory="/opt/sigma_vms/" fstype="ext4"

pcs constraint location clone_ProcDRBD_SigmaVMs prefers sgw-01

pcs constraint colocation add StorageDRBD_SigmaVMs with 
clone_ProcDRBD_SigmaVMs INFINITY with-rsc-role=Master

pcs constraint order promote clone_ProcDRBD_SigmaVMs then start 
StorageDRBD_SigmaVMs*
*


and when i create the VM

pcs resource create windows_VM_res VirtualDomain 
hypervisor="qemu:///system" 
config="/opt/sigma_vms/xml_definitions/windows_VM.xml"

pcs constraint colocation add windows_VM_res with StorageDRBD_SigmaVMs 
INFINITY

pcs constraint order start StorageDRBD_SigmaVMs_rers then start windows_VM *

*
My question is :

are the below steps enough to ensure that the new VM will be placed on 
the node 1 ?

(storage process prefers node 1 (the primary of drbd) with weight 
INFINITY, windows_VM should be placed with StorageDRBD_SigmaVMs always
and from transitive rule windows_VM should be placed on node1

(assume that ---> means prefer)  storage --> node1 , windows ---> 
storage thus from transitive rule windows_VM ---> node1

pcs constraint location clone_ProcDRBD_SigmaVMs prefers sgw-01

pcs constraint colocation add windows_VM_res with StorageDRBD_SigmaVMs 
INFINITY

pcs constraint order start StorageDRBD_SigmaVMs_rers then start windows_VM

Sincerely

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