i need a little help reducing my crypt partition. when i first
installed debian, i used a rather standard /boot on /dev/hda1 and crypt
on /dev/hda2, using LVM for the rest of the partitions.
i've been following this[1] resize guide and i am at step 5, having
already resized my logical LVM root and physical LVM volumes
successfully. /boot is about 230M and the rest (~39G) is allocated for
crypt. inside crypt i now have a 20G physical LVM volume with 512M swap
and 10G root logical volumes, and ~10G free space. now i just want to
reduce crypt so it is also about 20G, leaving the rest of the ~19G as
free space on the drive.
the final step it seems, before praying, is to delete /dev/hda2 with
fdisk and recreate it with the smaller size. i'm wondering what the
correct size should be; i'm afraid i might make it too small and then
corrupt everything somehow. i don't have the same layout as in the
guide since ubuntu does it a little differently with extended
partitions, so a little assistance going through fdisk would be appreciated.
below is some info from fdisk and LVM, let me know if you need more
info. thanks so much
1.
https://help.ubuntu.com/community/ResizeEncryptedPartitions#Detailed_resizing_.2BAH4_Reducing_an_encrypted_partition
$ sudo fdisk -l
Disk /dev/hda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x3f423f42
Device Boot Start End Blocks Id System
/dev/hda1 * 1 31 248976 83 Linux
/dev/hda2 32486438821072+ 83 Linux
Disk /dev/dm-0: 39.7 GB, 39751725568 bytes
255 heads, 63 sectors/track, 4832 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 10.8 GB, 10850664448 bytes
255 heads, 63 sectors/track, 1319 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x
Disk /dev/dm-1 doesn't contain a valid partition table
Disk /dev/dm-2: 536 MB, 536870912 bytes
255 heads, 63 sectors/track, 65 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x
Disk /dev/dm-2 doesn't contain a valid partition table
$ sudo pvdisplay
--- Physical volume ---
PV Name /dev/dm-0
VG Name graveyard
PV Size 20.00 GB / not usable 3.81 MB
Allocatable NO
PE Size (KByte) 4096
Total PE 5119
Free PE 2404
Allocated PE 2715
PV UUID HMRsf8-1ePs-J33c-4tQu-7MtA-V6dv-O0U10R
$ sudo lvdisplay
--- Logical volume ---
LV Name/dev/graveyard/root
VG Namegraveyard
LV UUIDC7bLop-WiHU-dwRy-3jBR-k1QP-rQEH-X9Zchr
LV Write Accessread/write
LV Status available
# open 1
LV Size10.11 GB
Current LE 2587
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:1
--- Logical volume ---
LV Name/dev/graveyard/swap_1
VG Namegraveyard
LV UUIDyyUTnD-JVGR-BzVb-krSR-Mswq-aYoE-9YYfJt
LV Write Accessread/write
LV Status available
# open 2
LV Size512.00 MB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:2
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