File System [repack] - Recover Vmfs

vmfs-recover -R -S 16384 /dev/disks/naa.6782a4b2c91d0001 --output /vmfs/volumes/scratch/new_descriptor.vmfs

He browsed the datastore. The VMDK files were there. The configuration files were there. With trembling hands, he registered the VM back into inventory. Right-click. Power On. recover vmfs file system

The tool synthesized a brand new, clean VMFS descriptor block, using the recovered file pointers from the deep scan. Then, with a command that felt like defusing a bomb, Leo wrote it back to the LUN: vmfs-recover -R -S 16384 /dev/disks/naa

Found 3 VMFS heartbeat regions. Detected primary file system descriptor at block 16384. File system UUID: 4c2c1a05-fcba-497a-8f3e-... Reconstructing pointer tables. With trembling hands, he registered the VM back

Leo Chen, the senior virtualization architect, stared at the vCenter screen, his coffee cup freezing halfway to his lips. One second, the three-tier application for a national payment gateway was humming along. The next, the 12-terabyte datastore—the one holding the heart of their transactional database—had vanished. The VMs were gone. Not crashed. Gone. The storage array reported the LUN was there, but ESXi just saw a raw, screaming void where the VMFS file system used to be.