Veeam suddenly failed backing up one of my VMs, a VM homed at a datastore with multiple other VMs - these VMs were backed up just fine.

My first thought was that the device backing the datastore, an old piece of spinning rust, was about to fail. The S.M.A.R.T.-info from ESXi was no help. Zero errors and a interesting runtime of 42 hours?

Retrying the backup didn't help. This single VM still failed to be backed up.

I tried booting of a live Ubuntu ISO to run fsck and found some bad sectors on the volume. Surely the physical drive will be replaced, but for now the backup can run without errors.


fsck arguments: -ccfky

ESXi version: 7.0.0, 16324942

VMFS version: 6

Veeam VBR version:

Encrypted storage container with LUKS

- Posted in Linux by

Create an encrypted container for storage with LUKS

Change the names and paths to reflect your environment and needs

1) Make sure cryptsetup is installed: sudo apt update && apt install cryptsetup -y

2) Create an empty file for the container: sudo dd if=/dev/zero bs=1M of=/path/to/lukscontainer count=10240 (I prefer using a flat file, instead of a device, for portability)

3) Create the LUKS volume within the flat file: sudo cryptsetup luksOpen /path/to/lukscontainer container_crypt

4) Create a filesystem within the LUKS volume: sudo mkfs.ext4 /dev/mapper/container_crypt

5) Create a mountpoint for the container: sudo mkdir -p /storage/container/

6) Mount the container in your newly created mountpoint: sudo mount /dev/mapper/container_crypt /storage/container/

To easily unmount and mount the container in the future, create 2 simple scripts:

#!/bin/sh /usr/bin/umount /dev/mapper/container_crypt /sbin/cryptsetup luksClose /dev/mapper/container_crypt

#!/bin/sh /sbin/cryptsetup luksOpen /path/to/lukscontainer container_crypt /usr/bin/mount /dev/mapper/container_crypt /storage/container/

(the editor in htmly isn't playing nice, insert linebreaks manually)

Make the scrips executable with chmod +x luks* and run them with ./

Make sure to upgrade your KDF to argon2id (default for latest version at the time of writing):