On Mon, Jan 23, 2017 at 4:20 PM, Claude Duropcher <claude.durocher@cptaq.gouv.qc.ca> wrote:

Hi,

We need to update/reboot the NFS server on wich the hosted engine is installed. This server also hosts a couple of extra storage domains (ISO, Export and a iScsi domain). I'm wondering if this procedure is complete for an oVirt 4.0 installation :

1-set the environment to global maintenance

2-set the extra domains to maintenance mode

3-shutdown the hosted engine

4-update/reboot the storage server

5-reboot the hosted engine

6-reactivate extra domains

7-disable global maintenance mode

I'm wondering what's happening after step 4 and how ovirt will react when the NFS storage disapear and come back.

ovirt-ha-agent will try to reconnect the shared storage if hosted-engine for all the time; depending on different factors, sanlock will fail updating the hosted-engine lease ans this can bring the watchdog to reboot the host.

Setting also local maintenance mode on the involved hosts is a good idea.

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