Vmfs Repair Tool Jun 2026
# Syntax vmkfstools -R /vmfs/devices/disks/<NAA_ID>
If the tool fails, it indicates that the metadata damage is too severe for native tools to repair, or the underlying storage hardware is faulty. vmfs repair tool
| Scenario | Benefit | |----------|---------| | ESXi host reports: "Unable to mount VMFS datastore" | Tool scans and repairs the superblock/heartbeat. | | VMs are missing from inventory but .vmx files exist on datastore | Recovers lost VM references via directory entry rebuild. | | Storage array experienced a controller failover or write-order failure | Fixes inconsistent atomic test-and-set (ATS) locks. | | Accidental VMFS volume overwritten (e.g., formatted as something else) | Recovers prior VMFS signature and file system layout. | # Syntax vmkfstools -R /vmfs/devices/disks/<