I have 2 vmware clusters and with one off them I'm receiving warnings alerts when IO is stressed.
This is the warning message
Node ID: md3220-cgn-bct
Host IP Address:
Host ID: Out-of-Band
Event Error Code: 4011
Event occurred: Nov 18, 2013 6:39:30 PM
Event Message: Virtual disk not on preferred path due to failover
Event Priority: Warning
Component Type: RAID Controller Module
Component Location: Enclosure 0, Slot 1
I have disabled one path in vmware and configure all VD ownership in the controller with the live path and the problem becomed less frecuent but persists.
This is how the hosts are connected to the md3220
vmware1 - hba1 - - | - - ->controller 1
- hba2 - - | - | ->controller 2
vmware2 - hba1 - - | |
- hba2 - - - - |
Vmware multipathing is set up as most recently used (vmware).
All hosts are esxi 5.1
The last warning was 8 hours ago and in the same minute i receive the alert and the recovery.
Both paths bounce and happened randomly with all virtual disks.
Best regards.