Recovery Vmfs Access

The Virtual Machine File System (VMFS) is incredibly resilient, but it isn't invincible. The good news? You just need to know the right commands and the right order of operations.

Stay calm. Run esxcfg-scsidevs . Use vmkfstools -V . And whatever you do,

Have you ever recovered a "dead" VMFS datastore? What trick worked for you? Let me know in the comments below. Always ensure you have current, restorable backups before attempting filesystem repairs. The author assumes no liability for data loss resulting from the misuse of these commands. recovery vmfs

First, unmount the datastore (force if necessary).

partedUtil setptbl /vmfs/devices/disks/naa.6000c29c4c5a2b1c gpt partedUtil add /vmfs/devices/disks/naa.6000c29c4c5a2b1c 1 2048 [End_Sector_Number] To find the end sector: partedUtil getUsableSectors /vmfs/devices/disks/naa.6000c29c4c5a2b1c The Virtual Machine File System (VMFS) is incredibly

Create a new partition (assuming a standard 1MB offset):

voma -m vmfs -f fix -d /vmfs/devices/disks/naa.6000c29c4c5a2b1c:1 voma will scan every file descriptor, fix chain corruption, and rebuild the allocation map. This tool has saved my bacon more times than I can count. Once the repair completes (or the mount succeeds), rescan again and verify the heartbeat. Stay calm

vmkfstools -V -r /vmfs/devices/disks/naa.6000c29c4c5a2b1c:1 If the metadata is corrupt (files show up, but VMs won't power on), you need the VMFS Offline Metadata Analyzer ( voma ).