document how the drives were created in the gnt-dal cluster

         cumin -p 0 'C:roles::ganeti::chi' 'puppet agent -t'

 10. partition the extra disks:

         mdadm --create --verbose --level=10 --metadata=1.2 --raid-devices=6 /dev/md2 /dev/sd[abcdef] &&

 10. partition the extra disks, SSD:

         for disk in /dev/sd[abcdef]; do

              parted -s $disk mklabel gpt;

              parted -s $disk -a optimal mkpart primary 0% 100%;

         done &&

         mdadm --create --verbose --level=10 --metadata=1.2 --raid-devices=6 /dev/md2 /dev/sd[abcdef]1 &&

         dd if=/dev/random bs=64 count=128 of=/etc/luks/crypt_dev_md2 &&

         chmod 0 /etc/luks/crypt_dev_md2 &&

         cryptsetup luksFormat --key-file=/etc/luks/crypt_dev_md2 /dev/md2 &&

         cryptsetup luksOpen --key-file=/etc/luks/crypt_dev_md2 /dev/md2 crypt_dev_md2 &&

         pvcreate /dev/mapper/crypt_dev_md2 &&

         echo crypt_dev_md2 UUID=$(lsblk -n -o UUID /dev/md2 | head -1) /etc/luks/crypt_dev_md2 luks,discard >> /etc/crypttab &&

         update-initramfs -u

    Normally, this would have been done in the `setup-storage`

    configuration, but we were in a rush.

    NVMe:

         for disk in /dev/nvme[23]n1; do

             parted -s $disk mklabel gpt;

             parted -s $disk -a optimal mkpart primary 0% 100%;

         done &&

         mdadm --create --verbose --level=1 --metadata=1.2 --raid-devices=2 /dev/md3 /dev/nvme2n1p1 /dev/nvme3n1p1 &&

         dd if=/dev/random bs=64 count=128 of=/etc/luks/crypt_dev_md3 &&

         chmod 0 /etc/luks/crypt_dev_md3 &&

         cryptsetup luksFormat --key-file=/etc/luks/crypt_dev_md3 /dev/md3 &&

         cryptsetup luksOpen --key-file=/etc/luks/crypt_dev_md3 /dev/md3 crypt_dev_md3 &&

         pvcreate /dev/mapper/crypt_dev_md3 &&

         vgcreate vg_ganeti_nvme /dev/mapper/crypt_dev_md3 &&

         echo crypt_dev_md3 UUID=$(lsblk -n -o UUID /dev/md3 | head -1) /etc/luks/crypt_dev_md3 luks,discard >> /etc/crypttab &&

         update-initramfs -u

    TODO: `vg_ganeti_nvme` configuration.

    Normally, this would have been done in the `setup-storage`

    configuration, but we were in a rush. Note that we create

    partitions because we're worried replacement drives might not have

    exactly the same size as the ones we have. The above gives us a

    1.4MB buffer at the end of the drive, and avoids having to

    hard code disk sizes in bytes.

 11. Reboot to test the LUKS configuration: