LVM recover lost volume

Comment retrouver sa partition LVM quand elle est perdue sur son disque dur ?

strings -a -t x /dev/sda6 | grep -i "defiant {"

   27ff *defiant {
   280a id = "QsythQ-rik4-UGUe-hE19-c3MJ-20Zl-pNdePN"
   2838 seqno = 9
   2842 format = "lvm2"
   2852 status = ["RESIZEABLE", "READ", "WRITE"]
   287b flags = []
   2886 extent_size = 8192
   2899 max_lv = 0
   28a4 max_pv = 0
   28af metadata_copies = 0
   28c4 physical_volumes {
   28d8 pv0 {
   28de id = "EmEjir-QqkH-9q2v-qiPB-Bqy6-YdRt-YGAIAA"
   290c device = "/dev/sda6"
   2922 status = ["ALLOCATABLE"]
   293b flags = []
   2946 dev_size = 84730544
   295a pe_start = 2048
   296a pe_count = 10343
   2980 logical_volumes {
   2993 root {
   299a id = "qtegFg-jzYk-0I48-Dvk0-tQDp-aqT7-vp2kRq"
   29c8 status = ["READ", "WRITE", "VISIBLE"]
   29ee flags = []
   29f9 creation_host = "livecd"
   2a12 creation_time = 1438350317
   2a2d segment_count = 1
   2a40 segment1 {
   2a4b start_extent = 0
   2a5c extent_count = 8192
   2a71 type = "striped"
   2a82 stripe_count = 1
   2a94 stripes = [
   2aa0 "pv0", 0
   2ab0 homes {
   2ab8 id = "5EoNHD-Wgdn-R0dv-E397-4B1F-zrBV-u5r5n9"
   2ae6 status = ["READ", "WRITE", "VISIBLE"]
   2b0c flags = []
   2b17 creation_host = "defiant"
   2b31 creation_time = 1451220703
   2b4c segment_count = 1
   2b5f segment1 {
   2b6a start_extent = 0
   2b7b extent_count = 2048
   2b90 type = "striped"
   2ba1 stripe_count = 1
   2bb3 stripes = [
   2bbf "pv0", 8192
   2bd5 # Generated by LVM2 version 2.02.116(2) (2015-01-30): Mon Dec 28 15:39:55 2015
   2c25 contents = "Text Format Volume Group"
   2c4b version = 1
   2c58 description = ""
   2c6a creation_host = "defiant"       # Linux defiant 4.1.12-gentoo #4 SMP Sun Dec 27 15:47:36 CET 2015 x86_64
   2ccd creation_time = 1451313595      # Mon Dec 28 15:39:55 2015

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