Hi, got this ERROR when creating new instance and attaching volume to it.

var/log/nova/compute.log

2015-02-20 11:10:18.543 22161 ERROR nova.network.api [-] [instance: 132ad82d-df01-4de8-96ac-b7ff3d0ca8d9] Failed storing info cache
2015-02-20 11:10:18.841 22161 ERROR nova.network.api [-] [instance: a165015f-c701-45ba-82df-98dadd2e11e8] Failed storing info cache
2015-02-20 11:10:19.015 22161 ERROR nova.network.api [-] [instance: 86da23ca-e493-47e2-bb73-3c2d0e7ea529] Failed storing info cache
2015-02-20 11:13:11.214 22161 ERROR nova.openstack.common.periodic_task [-] Error during ComputeManager._run_image_cache_manager_pass: No JSON object could be decoded

those errors are on all of the compute nodes (2)