The documentation at https://wikitech.wikimedia.org/wiki/Help:Shared_storage#/data/project does not mention that an NFS server needs to be configured.

You need to update the dns record for math-nfs.svc.math.eqiad1.wikimedia.cloud to the new instance, via https://horizon.wikimedia.org/ngdetails/OS::Designate::Zone/8fb8cf01-ac22-4fad-9495-7d6135574fa1

I'm not sure you'd be able to change the zone yourself, if that's not the case then please let us know (cfr https://wikitech.wikimedia.org/wiki/Portal:Data_Services/Admin/Runbooks/Create_an_NFS_server#NFS_service_failover)

In T429544#12033610, @Physikerwelt wrote:

@fgiunchedi thank you so much

I made it. It worked almost without problems. Only I had to manually edit /etc/fstab to mount the second disk. I was hoping that this would already be taken care of by the puppet config..

Interesting, IIRC fstab editing is taken care by wmcs-prepare-cinder-volume which in turn is run by the cookbooks here https://wikitech.wikimedia.org/wiki/Portal:Data_Services/Admin/Runbooks/Create_an_NFS_server . I'm not sure if we have an end to end guide for users on how to self-service migrate their nfs servers. Maybe @Andrew knows

wmcs-prepare-cinder-volume

It also handles the formatting, so I was afraid that it might reformat the existing disk.

The puppet config links above says

profile::wmcs::nfs::standalone::cinder_attached: true

so maybe there is a step missing that configures the local mount.

However, maybe this is not a problem that many people might face. That's why I closed the ticket so more important tasks can be worked on. Thank you for your help.

In T429544#12039331, @fgiunchedi wrote:

I'm not sure if we have an end to end guide for users on how to self-service migrate their nfs servers. Maybe @Andrew knows

Typically I've maintained the NFS servers, as a holdover from when there was one monolithic server provided to all projects. I created T429793 for a start.