Recover Vmfs Datastore |work| May 2026

Step 1: Identify the device. fdisk -l showed /dev/sde as 12 TB, with partition 1 (VMFS) starting at sector 2048. Good—partition still there.

Step 2: Use vmfs-fuse to try a read-only mount. # vmfs-fuse /dev/sde1 /mnt/recover → failed: "Unsupported VMFS version or corrupted heartbeat region" . recover vmfs datastore

VMware now saw the storage, but as a fresh, unmounted volume. The partition table? Intact. The VMFS superblock? Unknown. Step 1: Identify the device

Step 3: Deeper scan. She ran vmfs6-recover (part of vmfs-tools ). It parsed backup VMFS metadata—the first copy of the file system descriptor had been overwritten when the host re-scanned the "new" LUN, but VMware stores a second copy at offset 512 MB. Step 2: Use vmfs-fuse to try a read-only mount

The datastore reappeared in the vSphere Client. VMs showed as "unknown"—expected. She browsed the datastore: all VM folders, .vmdk , .vmx files intact.

Post-mortem? They automated LUN binding policies, restricted SAN reconfiguration rights, and made the intern write a 10-page essay on SCSI device IDs.

Success: Found backup VMFS6 superblock at 0x20000000 .

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