Shares

The OpenStack Manila service allows the creation of a filesystem that can be shared among virtual machines in the same tenant (intra-tenant) or in different tenants (extra-tenant). This setup is particularly useful for applications that require consistent and simultaneous access to data across different instances.

There are different share types for each CINECA HPC Cloud infrastructure:

• GENERIC shares: uses NFS protocol

• CEPHFS shares: uses CephFS protocol

• VAST shares: uses NFS protocol on VAST storage.

Complete share type list can be found under Shared filesystem (Manila Shares) paragraph in the cloud specific section for each system.

Note

Only intra-tenant shares are allowed on CINECA HPC Cloud infrastructures.

Manila Shared filesystem service request

To be enabled to use Manila service send an email to superc@cineca.it, communicating:

• project name

• share type (generic, cephfs or vast)

• total shared storage quota (GB)

• total share snapshot quota (GB)

Warning

On GAIA, snapshots are only usable for cephfs shares. Snapshots of vast shares can be created but they cannot be used to create new shares.

Note

For cephfs shares on ADA please communicate also how many shares you need and, for each share:

• the share size (GB)

• the name and id of the VMs that will mount the share

Once enabled, you can follow instructions at this link to create and mount your shared filesystem, depending on which share type you need and on which cloud you are operating on.