[root@nas:~]# cat /etc/lvm/backup/ubuntu-vg
# Generated by LVM2 version 2.02.140(2) (2016-01-16): Sat Jan 21 02:27:04 2017

contents = "Text Format Volume Group"
version = 1

description = "Created *after* executing 'vgchange -a y ubuntu-vg'"

creation_host = "nas"   # Linux nas 4.4.39 #1-NixOS SMP Thu Dec 15 16:49:34 UTC 2016 x86_64
creation_time = 1484980024      # Sat Jan 21 02:27:04 2017

ubuntu-vg {
        id = "Ic72wh-27FM-ojst-NCSS-2UfN-1EmE-gTQpRP"
        seqno = 3
        format = "lvm2"                 # informational
        status = ["RESIZEABLE", "READ", "WRITE"]
        flags = []
        extent_size = 8192              # 4 Megabytes
        max_lv = 0
        max_pv = 0
        metadata_copies = 0

        physical_volumes {

                pv0 {
                        id = "FS3kl8-i0LG-TDz9-mrR4-0QYl-adJ8-CPcm7g"
                        device = "/dev/loop0p5" # Hint only

                        status = ["ALLOCATABLE"]
                        flags = []
                        dev_size = 141578240    # 67.5098 Gigabytes
                        pe_start = 2048
                        pe_count = 17282        # 67.5078 Gigabytes
                }
        }

        logical_volumes {

                root {
                        id = "JXTQOx-MGDR-Pkf1-klD2-bz9d-2yli-cmRUhH"
                        status = ["READ", "WRITE", "VISIBLE"]
                        flags = []
                        creation_host = "ubuntu"
                        creation_time = 1415395443      # 2014-11-07 17:24:03 -0400
                        segment_count = 1

                        segment1 {
                                start_extent = 0
                                extent_count = 15235    # 59.5117 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv0", 0
                                ]
                        }
                }

                swap_1 {
                        id = "Q7u2YV-SViq-vl2q-t7oE-yWPF-zJve-VwN8Zm"
                        status = ["READ", "WRITE", "VISIBLE"]
                        flags = []
                        creation_host = "ubuntu"
                        creation_time = 1415395443      # 2014-11-07 17:24:03 -0400
                        segment_count = 1

                        segment1 {
                                start_extent = 0
                                extent_count = 2047     # 7.99609 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv0", 15235
                                ]
                        }
                }
        }
}