помоготе поправить загрузку с lvm + luks

[ziminv]

есть основной раздел /boot.
все отальное пространство загнано в шифрованый lvm(/dev/mapper/lvm-{root, swap, home})
инсталяция прошла успешно но загрузка вываливается в BusyBox с ошибкой
/dev/mapper/lvm-root does not exist
как это поправить?

fstab

(Нажмите, чтобы показать/скрыть)

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/mapper/lvm-root /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda1 during installation
UUID=fc0c157a-74c6-425a-954a-dd9cca9950cf    /boot           ext4    defaults        0       2
/dev/mapper/lvm-home /home           ext4    defaults        0       2
/dev/mapper/lvm-swap none            swap    sw              0       0

#UUID=fc0c157a-74c6-425a-954a-dd9cca9950cf /boot

fdisk -l

(Нажмите, чтобы показать/скрыть)

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bbe00

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      391167      194560   83  Linux
/dev/sda2          393214   625141759   312374273    5  Extended
/dev/sda5          393216   625141759   312374272   83  Linux

Disk /dev/mapper/luks-5d5edf5d-f580-4298-9673-c6092829c6fb: 319.9 GB, 319869157376 bytes
255 heads, 63 sectors/track, 38888 cylinders, total 624744448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/luks-5d5edf5d-f580-4298-9673-c6092829c6fb doesn't contain a valid partition table

Disk /dev/mapper/lvm-root: 31.0 GB, 30995906560 bytes
255 heads, 63 sectors/track, 3768 cylinders, total 60538880 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/lvm-root doesn't contain a valid partition table

Disk /dev/mapper/lvm-swap: 2197 MB, 2197815296 bytes
255 heads, 63 sectors/track, 267 cylinders, total 4292608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/lvm-swap doesn't contain a valid partition table

Disk /dev/mapper/lvm-home: 286.7 GB, 286672289792 bytes
255 heads, 63 sectors/track, 34852 cylinders, total 559906816 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/lvm-home doesn't contain a valid partition table