Расширение зашифрованного раздела luks

Я запускаю Ubuntu внутри VMWare с зашифрованным корневым разделом luks. Я следую за Resize Encrypted Partitions (from help.ubuntu.com) и застрял на шаге 11.

ubuntu@ubuntu:~$ sudo lvresize -L +10G /dev/ubuntu-vg/root
Extending logical volume root to 25.74 GiB
Insufficient free space: 2560 extents needed, but only 4 available

fdisk -l показывает дополнительное пространство, доступное на физическом диске, я просто не уверен, что какая-то команда удерживает меня от использования lvresize.

ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders, total 62914560 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: 0x000f36ef

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758    41940991    20719617    5  Extended
/dev/sda5          501760    41940991    20719616   83  Linux

Disk /dev/mapper/crypt1: 21.2 GB, 21214789632 bytes
255 heads, 63 sectors/track, 2579 cylinders, total 41435136 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/crypt1 doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-root: 16.9 GB, 16903045120 bytes
255 heads, 63 sectors/track, 2055 cylinders, total 33013760 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/ubuntu--vg-root doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-swap_1: 4290 MB, 4290772992 bytes
255 heads, 63 sectors/track, 521 cylinders, total 8380416 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/ubuntu--vg-swap_1 doesn't contain a valid partition table

Информация о моем физическом томе

lvm> pvdisplay --- Physical volume --- PV Name /dev/dm-0 VG Name ubuntu-vg PV Size 19.76 GiB / not usable 3.81 MiB Allocatable yes PE Size 4.00 MiB Total PE 5057 Free PE 4 Allocated PE 5053 PV UUID b6DksK-NYal-Wvai-0iUc-ku1J-PwZy-wWZtLB