Step 4: She used dd to copy that backup block over the primary superblock (after making a full LUN image with ddrescue to a separate 12-TB drive—insurance). # dd if=/dev/sde1 bs=1M skip=512 count=1 of=primary_superblock_backup.bin Then, using vimfstools (from a recovered ESXi maintenance mode session): # vmkfstools -B recover /vmfs/devices/disks/naa.6000...:1
Step 5: Mount attempt on ESXi: # esxcli storage vmfs snapshot mount -l Prod-HighSpeed recover vmfs datastore
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 4: She used dd to copy that
Step 4: She used dd to copy that backup block over the primary superblock (after making a full LUN image with ddrescue to a separate 12-TB drive—insurance). # dd if=/dev/sde1 bs=1M skip=512 count=1 of=primary_superblock_backup.bin Then, using vimfstools (from a recovered ESXi maintenance mode session): # vmkfstools -B recover /vmfs/devices/disks/naa.6000...:1
Step 5: Mount attempt on ESXi: # esxcli storage vmfs snapshot mount -l Prod-HighSpeed
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.