FileVault2

Zinnia:~(260407m|master+!?) $ diskutil list                                                        2011-07-24 20:55:08
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:          Apple_CoreStorage                         549.6 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
   4:       Microsoft Basic Data BOOTCAMP                199.7 GB   disk0s4
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Zinnia HD              *549.3 GB   disk1
Zinnia:~(260408m|master+!?) $ diskutil coreStorage list                                            2011-07-24 20:55:18
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 25A1A5CA-2737-42A5-BA80-4E49927F8045
    =========================================================
    Name:         Zinnia HD
    Sequence:     1
    Free Space:   0 B (0 B)
    |
    +-< Physical Volume D05A7400-0F05-420B-9DFB-E0344401EE91
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     549641609216 B (549.6 GB)
    |
    +-> Logical Volume Family 4E0E99F1-E991-4FBC-928D-3A7444BE82CC
        ----------------------------------------------------------
        Sequence:               9
        Encryption Status:      Unlocked
        Encryption Type:        AES-XTS
        Encryption Context:     Present
        Conversion Status:      Complete
        Has Encrypted Extents:  Yes
        Conversion Direction:   -none-
        |
        +-> Logical Volume 1BC05272-2E7C-4223-A922-F18DD7F72961
            ---------------------------------------------------
            Disk:               disk1
            Status:             Online
            Sequence:           4
            Size (Total):       549322838016 B (549.3 GB)
            Size (Converted):   -none-
            Revertible:         Yes (unlock and decryption required)
            LV Name:            Zinnia HD
            Volume Name:        Zinnia HD
            Content Hint:       Apple_HFS