root@Albus ~]# pvs
  PV         VG    Fmt  Attr PSize PFree
  /dev/sda3  data1 lvm2 a-   1.76T    0
[root@Albus ~]# fdisk -l

Disk /dev/sda: 1999.8 GB, 1999844147200 bytes
255 heads, 63 sectors/track, 243133 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      514048+  83  Linux
/dev/sda2              65        2022    15727635   83  Linux
/dev/sda3            2023      236997  1887436687+  8e  Linux LVM
/dev/sda4          236998      243133    49287420    5  Extended
/dev/sda5          236998      238041     8385898+  82  Linux swap / Solaris
/dev/sda6          238042      238694     5245191   83  Linux
/dev/sda7          238695      239086     3148708+  83  Linux

Disk /dev/dm-0: 1932.7 GB, 1932701728768 bytes
255 heads, 63 sectors/track, 234970 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/dm-0 doesn't contain a valid partition table
[root@Albus ~]# lvdisplay /dev/data1
  --- Logical volume ---
  LV Name                /dev/data1/data1
  VG Name                data1
  LV UUID                7nWtzO-WgFn-txVC-qnbR-dKVB-0EAc-1OMLeP
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                1.76 TB
  Current LE             57599
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

[root@Albus ~]# cd /tmp/
[root@Albus tmp]# ks
-bash: ks: command not found
[root@Albus tmp]# ls
lost+found
[root@Albus tmp]# mkdir test
[root@Albus tmp]# mount /dev/data1/data1  test
mount: you must specify the filesystem type
[root@Albus tmp]# less /etc/fstab
[root@Albus tmp]# mount -a
mount: wrong fs type, bad option, bad superblock on /dev/data1/data1,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so