[one-users] Incomplete information from hosts polling (VMWare ESXi 4.1 an OpenNebula 2.0.1)
luigi.fortunati at gmail.com
Thu Feb 3 08:10:43 PST 2011
I noticed a serious problem about the usage of VMWare ESXi 4.1 and
I'm actually using the VMWare driver addon which can be found on the
opennebula website (ver. 1.0) and libvirt (ver. 0.8.7).
It happens that OpenNebula can't get information about the usage of
resources on the cluster nodes.
By running 2 VM (each one requires 2 VCPU and 1 GB of memory) and executing
some commands I get this output.
oneadmin at custom2:~/src$ onehost list
ID NAME CLUSTER RVM TCPU FCPU ACPU TMEM FMEM
2 custom7.sns.it default 0 200 200 200 2G 0K
1 custom6.sns.it default 2 200 200 200 2G 0K
oneadmin at custom2:~/src$ onehost show 1
HOST 1 INFORMATION
ID : 1
NAME : custom6.sns.it
CLUSTER : default
STATE : MONITORED
IM_MAD : im_vmware
VM_MAD : vmm_vmware
TM_MAD : tm_vmware
MAX MEM : 2096460
USED MEM (REAL) : 0
USED MEM (ALLOCATED) : 0
MAX CPU : 200
USED CPU (REAL) : 0
USED CPU (ALLOCATED) : 0
RUNNING VMS : 2
As you can see OpenNebula is unable to get correct information about the
usage of resources on the cluster nodes.
As these informations are used by the VM scheduler, OpenNebula is unable to
schedule the VM correctly.
I tried to create several VM and all of them were placed on the same host
even if the latter was unable to satisfy the resource requirements of all
I think that this problem is strongly related to libvirt as OpenNebula use
it to recover information about hosts and vm.
Do you get the same behavior? Do you know if there is a way to solve this
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