Hi! I would some help to restablish iscsi connections from a physical server to SAN storage (instance volume).
Scenario: I've 5 compute nodes, 1 controller, 1 network node and 1 storge with iscsi. I had some VMs running on compute node 1. I had a switch problem so the connection between the physical server (hypervisor) and the SAN storage was lost (I can see that on logs, multipath tried to change the path e after that it removed the /dev/mapper/<id>). After restablish the switch I can't start the VM. What I'm seeing is that the hypervisor doens't have the device mapper path used in VM description (libvirt). /dev/disk/by-id/dm-uuid-mpath-360050763008108e54800000000000039 >From Horizon dashboard I can't detach the volume neither restart the VM. I can change the volume state from command line, reattach on VM but it doesn't start. The device can't be found. So, how can I recreate the iscsi sessions on the physical server? I think if the device be recreated the VM can be started. Is there some recomendation on using multipath? Can the multipath be configured to not remove the all the paths (from /dev) when a flaw occur? Thank you! - JLC
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