##### Trying to recover "unrecognizable filesystem" somewhere on sdg, which is an external 500 GB USB SSD, that I've been booting to. It was encrypted with full disk encryption. Ubuntun 16.04 LTS 64-bit desktop.

root@tror:~# cat /proc/partitions
major minor  #blocks  name

   8        0  488386584 sda
   8        1     498688 sda1
   8        2          1 sda2
   8        5  487884800 sda5
  11        0    1048575 sr0
  11        1    1048575 sr1
 252        0  487882752 dm-0
 252        1  481718272 dm-1
 252        2    6160384 dm-2
   8       96  488386584 sdg
   8       97     491512 sdg1
   8       98     491512 sdg2
   8       99  487351027 sdg3
 252        3  487318256 dm-3
root@tror:~# blkid
/dev/mapper/sda5_crypt: UUID="ASlwTh-Uf1s-2Zp4-IBtF-5eMR-yjhj-45WCQJ" TYPE="LVM2_member"
/dev/mapper/ubuntu--vg-root: UUID="72c5db68-d017-4991-9331-7aebb7c96d6a" TYPE="ext4"
/dev/sda1: UUID="adc3f8c0-a899-4d7d-9fef-f611389ca54d" TYPE="ext2" PARTUUID="2eb787c1-01"
/dev/sda5: UUID="8a364358-2eb6-4ebb-b175-7289a1065b0e" TYPE="crypto_LUKS" PARTUUID="2eb787c1-05"
/dev/mapper/ubuntu--vg-swap_1: UUID="74706e33-56bc-499c-bc07-63e98511baa2" TYPE="swap"
/dev/sdg1: UUID="FA46-88BC" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="5bbdbf8b-a8b7-449d-99a9-d59a915818df"
/dev/sdg2: UUID="ec1fef6b-65b1-456f-8fc0-195e8fa0e520" TYPE="ext2" PARTUUID="86ebb19a-ee32-4488-8639-2b981b9f0405"
/dev/sdg3: UUID="8e7b319d-43cc-4600-9ebb-a86f13c04ae8" TYPE="crypto_LUKS" PARTUUID="a5a98419-88b9-4940-ad66-7f3ef62af723"
/dev/mapper/luks-8e7b319d-43cc-4600-9ebb-a86f13c04ae8: UUID="tx2mVd-io9q-DReX-uu8i-TKLu-N1Lh-EDUp8A" TYPE="LVM2_member"