LVM setup on Storware Backup & Recovery Node for disk attachment backup mode

Note: This is required for backup of virtual environments when using disk attachment mode, such as Nutanix backups.
Storware Backup & Recovery Node attaches VM disks that potentially are clones of its own (for example if Node deployed from the template) - you need to configure LVM on the Node so that it doesn't scan for LVM volumes where disks are being attached.
  1. 1.
    Set the following variables in /etc/lvm/lvm.conf in devices section - so that only system volumes are being detected by LVM daemon (in this example sda disk with 2 partitions - sda1 and sda2):
    devices {
    filter = [ "a|^/dev/sda|", "a|^/dev/sda1|", "a|^/dev/sda2|", "r|.*|" ]
    global_filter = [ "a|^/dev/sda|", "a|^/dev/sda1|", "a|^/dev/sda2|", "r|.*|" ]
  2. 2.
    Check with vgscan -vvv that your OS volumes are still being detected:
    Allocated VG vg_vprotect at 0x55914f19fac0.
    Importing logical volume vg_vprotect/lv_root.
    Importing logical volume vg_vprotect/lv_swap.
  3. 3.