Overview
Incident Summary
Plex libraries on media-01 became unavailable after the Vault NFS export failed due to a storage-layer mount issue on vault-01.
Although Plex Media Server remained online, downstream shared storage paths became inaccessible because the underlying media volume was not mounted correctly.
Environment
Infrastructure Components
Storage Environment
- Forge (Proxmox VE) virtualization platform
- vault-01 storage server
- media-01 Plex media server
- /mnt/media primary storage mount
- /mnt/vault-media NFS client mount
- Shared movie and television libraries
Symptoms
Operational Indicators
Multiple infrastructure symptoms confirmed downstream storage dependency failure across the Plex media environment.
Observed Conditions
- Plex libraries appeared empty
- Movies and television content disappeared
- NFS mounts stalled or failed
- /mnt/vault-media returned empty results
- mount -a operations hung on media-01
Root Cause
Storage Dependency Failure
The primary storage volume on vault-01 failed to initialize because of an outdated UUID reference within /etc/fstab.
Dependency Impact
- NFS exports failed to initialize
- media-01 lost shared storage access
- Plex lost media path visibility
- Downstream client mounts stalled
- Shared media services became unavailable
Recovery Actions
Infrastructure Restoration
Recovery operations focused on restoring infrastructure dependencies in the proper operational sequence.
Recovery Workflow
- Validated attached storage devices
- Corrected invalid UUID references
- Reapplied filesystem mounts
- Restarted NFS export services
- Restored media-01 client mounts
- Restarted Plex Media Server
Validation
Post-Recovery Validation
Infrastructure validation confirmed successful storage restoration and downstream service recovery.
Validation Results
- /mnt/media restored successfully
- NFS exports became operational
- /mnt/vault-media mounted correctly
- Plex libraries repopulated successfully
- Infrastructure services stabilized
Operational Notes
Dependency Recovery Behavior
NFS client recovery depends entirely on successful storage initialization and export availability from the upstream storage server.
If mount operations hang on media-01, troubleshooting should begin at vault-01 rather than at the Plex application layer.
Lessons Learned
Operational Takeaways
- Plex failures may originate from infrastructure dependencies
- NFS troubleshooting should begin at the storage export source
- UUID mismatches can silently break shared storage workflows
- Storage validation should be integrated into monitoring operations
- Dependency-aware recovery significantly reduces troubleshooting time