Repair Vmfs Datastore ((link)) Official

If the signature is truly gone, and you have exhausted all options, you can attempt to create a new VMFS filesystem over the partition. This is only safe if you verify the partition boundaries do not shift.

If possible, create a block-level copy of the LUN before trying destructive repairs. repair vmfs datastore

vmkfstools -x repair /vmfs/volumes/DatastoreName/VMName/VMName.vmdk Step 5: Last Resort Recovery If the signature is truly gone, and you

I can provide the specific CLI commands tailored to your version. The vmkfstools -F (or --fix ) switch is

Before attempting a repair, you must determine where the failure lies. A logical "missing" datastore is often a connectivity or presentation issue rather than actual corruption.

The vmkfstools -F (or --fix ) switch is the closest analogue to Windows chkdsk . When executed against a volume path (e.g., vmkfstools -F check /vmfs/volumes/DatastoreName ), it scans for metadata inconsistencies, orphaned file descriptors, and incorrect resource counts. However, this is not a magic wand. It operates in three phases: "check" (read-only), "repair" (fixing minor issues like incorrect link counts), and "fix" (attempting more aggressive recovery). A crucial caveat: vmkfstools cannot recover actual file data; it can only repair the filesystem's pointers. If a virtual machine's VMDK descriptor file points to the wrong blocks, the repair may succeed logically while leaving the VM booting to a blue screen.