~ # cryptsetup status /dev/mapper/sda5_crypt 
/dev/mapper//dev/mapper/sda5_crypt is active:
cipher: aes-cbc-essiv:sha256
keysize: 256 bits
device: /dev/sda5
offset: 2056 sectors
size: 155797496 sectors
mode: read/write

~ # fdisk -l /dev/sda [pts/1 - 1652H 0J 0R - 2011-01-09 16:03:43 - 0+06:40 - 0.32 0.27 0.26] 

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003da47

Device Boot Start End Blocks Id System
/dev/sda1 * 1 32 248832 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 32 9730 77899777 5 Extended
/dev/sda5 32 9730 77899776 83 Linux

~ # pvs /dev/mapper/sda5_crypt -o+pe_start 
PV VG Fmt Attr PSize PFree 1st PE 
/dev/mapper/sda5_crypt malbec lvm2 a- 74,29g 0 192,00k