-bash-4.1$ cat /proc/mdstat
Personalities : [raid1]
md127 : active raid1 sdb1[1] sda1[0]
1953512400 blocks super 1.2 [2/2] [UU]

unused devices: <none>

-bash-4.1$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/md127
VG Name vgstorage
PV Size 1.82 TiB / not usable 2.95 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 476931
Free PE 0
Allocated PE 476931
PV UUID kGGfWl-DrOp-RMb1-FyhQ-558k-RPcA-fswGLG

-bash-4.1$ sudo vgdisplay
--- Volume group ---
VG Name vgstorage
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476931
Alloc PE / Size 476931 / 1.82 TiB
Free PE / Size 0 / 0
VG UUID WVD1Kc-YmHm-mPgv-NOMC-2vaR-K7SH-cDb58o

-bash-4.1$
-bash-4.1$ sudo lvdisplay
--- Logical volume ---
LV Path /dev/vgstorage/storage
LV Name storage
VG Name vgstorage
LV UUID LMeS5F-0gF8-4flA-LMRK-25PW-Yc1u-oqfWv2
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 1.82 TiB
Current LE 476931
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1

-bash-4.1$