Problem
A NAS share uses SMB opportunistic locking behavior that conflicts with the editor's database-style project files during multi-machine access.
Solution
Root Cause / Diagnostic:
SMB Opportunistic Locking (OpLocks) and client-side caching allow workstations to aggressively cache file attributes and read/write chunks locally to accelerate standard office files. When multiple editing workstations access shared project databases (e.g., DaVinci Resolve project libraries or shared XML structures), conflicting OpLock leases trigger lock delays, file access collisions, and project save errors.
Actionable Fix:
1. OpLocks & Lease Disablement: In the NAS SMB configuration (smb.conf), disable opportunistic locking and SMB2/3 leases specifically on project database shares (oplocks = no, level2 oplocks = no, smb2 leases = no).
2. Dedicated Database Service Migration: Transition shared NLE project libraries from direct SMB file shares to dedicated network database services (e.g., PostgreSQL Server for DaVinci Resolve).
3. Concurrency Stress Test: Open the shared project simultaneously from two workstations, execute concurrent project modifications, and confirm instantaneous save commits without lock conflict errors.
Pro Tip:
Never host collaborative NLE project databases on a standard SMB share with default settings; turn off SMB OpLocks or use a dedicated PostgreSQL server to avoid project file lock conflicts.
SMB Opportunistic Locking (OpLocks) and client-side caching allow workstations to aggressively cache file attributes and read/write chunks locally to accelerate standard office files. When multiple editing workstations access shared project databases (e.g., DaVinci Resolve project libraries or shared XML structures), conflicting OpLock leases trigger lock delays, file access collisions, and project save errors.
Actionable Fix:
1. OpLocks & Lease Disablement: In the NAS SMB configuration (smb.conf), disable opportunistic locking and SMB2/3 leases specifically on project database shares (oplocks = no, level2 oplocks = no, smb2 leases = no).
2. Dedicated Database Service Migration: Transition shared NLE project libraries from direct SMB file shares to dedicated network database services (e.g., PostgreSQL Server for DaVinci Resolve).
3. Concurrency Stress Test: Open the shared project simultaneously from two workstations, execute concurrent project modifications, and confirm instantaneous save commits without lock conflict errors.
Pro Tip:
Never host collaborative NLE project databases on a standard SMB share with default settings; turn off SMB OpLocks or use a dedicated PostgreSQL server to avoid project file lock conflicts.