Using Multipath Storage

To enable multipath storage (iSCSI, Fibre Channel) and configure multipathd daemon in Catalogic vStor:

Attention! Configuring and enabling multipathd on the Catalogic vStor server is critical. Without it, a single disk might appear with multiple labels (like /dev/sda and /dev/sdb), leading to pool management and reporting issues.

1. Log in: Access the vStor server shell using the admin account, typically via an SSH client.

2. Create Configuration: Execute sudo mpathconf --enable to generate a multipath configuration file at /etc/multipath.conf.

3. Start Multipath Daemon: Run sudo systemctl enable --now multipathd to start and enable the daemon.

4. Verify Daemon Status: Ensure that the multipathd service is active and running by executing systemctl status multipathd.

5. Mapping Devices: Starting the multipathd daemon also generates new device paths in /dev/mapper, identified as mpath<x>. To view the mapping layout, use sudo multipath -ll.

6. Usage in Volume and File System Management: When creating volumes, partitions, or mounting file systems, refer to these mpath<x> names within /dev/mapper for accurate device identification and management.