Hi ALL I am currently testing openstack liberty in my centos 7 environment.
I am planning to boot vm from volume using ceph backend. all the instances volumes are shared among all the compute nodes and I am able to do the nova migrate and nova live-migration. when I was testing the nova evacuate function, It failed silently. I checked nova-compute.log in target compute node and it says "InvalidSharedStorage: Invalid state of instance files on shared storage" based on the doc( https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/6/html/Administration_Guide/section-evacuation.html ), I realize that only share the volumes is not enough. The instances files are in the local storage (/var/lib/nova/instances) by default. According to the docs, it setup a NFS server for the instances files and mount to each compute node. However, since I have already had a shared storage system (ceph), is it doable to put these files in ceph? or I have to setup NFS, sync these files and mount to each compute node? thanks
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