Сабж.
Дано: хард с установленной убунтой в LVM, позже к тому добавлен аналогичный по объёму чистый хард. Места стало в два раза больше.
➜ ~ lvdisplay -m
--- Logical volume ---
LV Path /dev/ubuntu-vg/root
LV Name root
VG Name ubuntu-vg
LV UUID Awqbwf-4394-RHsu-AtYq-eey7-umpe-2LawrO
LV Write Access read/write
LV Creation host, time ubuntu, 2014-06-03 16:08:01 +0700
LV Status available
# open 1
LV Size 1.82 TiB
Current LE 475912
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Segments ---
Logical extent 0 to 237434:
Type linear
Physical volume /dev/sdb5
Physical extents 0 to 237434
Logical extent 237435 to 237445:
Type linear
Physical volume /dev/sdb5
Physical extents 238394 to 238404
Logical extent 237446 to 475911:
Type linear
Physical volume /dev/sda1
Physical extents 0 to 238465
--- Logical volume ---
LV Path /dev/ubuntu-vg/swap_1
LV Name swap_1
VG Name ubuntu-vg
LV UUID JV3RXI-1V2F-zbCx-pCTI-FZPa-EBNb-lewT6z
LV Write Access read/write
LV Creation host, time ubuntu, 2014-06-03 16:08:01 +0700
LV Status available
# open 2
LV Size 3.75 GiB
Current LE 959
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
--- Segments ---
Logical extent 0 to 958:
Type linear
Physical volume /dev/sdb5
Physical extents 237435 to 238393
➜ ~ pvdisplay -m
--- Physical volume ---
PV Name /dev/sdb5
VG Name ubuntu-vg
PV Size 931.27 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 238405
Free PE 0
Allocated PE 238405
PV UUID 1fACyT-ui6E-yYfV-Mqh7-n2ZJ-HZeC-fccUsM
--- Physical Segments ---
Physical extent 0 to 237434:
Logical volume /dev/ubuntu-vg/root
Logical extents 0 to 237434
Physical extent 237435 to 238393:
Logical volume /dev/ubuntu-vg/swap_1
Logical extents 0 to 958
Physical extent 238394 to 238404:
Logical volume /dev/ubuntu-vg/root
Logical extents 237435 to 237445
--- Physical volume ---
PV Name /dev/sda1
VG Name ubuntu-vg
PV Size 931.51 GiB / not usable 4.69 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 238466
Free PE 0
Allocated PE 238466
PV UUID C3eWUk-HQXW-NUnX-msYW-SqH3-Re0x-RnsJ6i
--- Physical Segments ---
Physical extent 0 to 238465:
Logical volume /dev/ubuntu-vg/root
Logical extents 237446 to 475911
➜ ~ vgdisplay
--- Volume group ---
VG Name ubuntu-vg
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 8
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 1.82 TiB
PE Size 4.00 MiB
Total PE 476871
Alloc PE / Size 476871 / 1.82 TiB
Free PE / Size 0 / 0
VG UUID xqEKFR-5AUT-pj4J-Bzw7-LftS-dH4l-9PoT3T
Как правильно вывести /dev/sda из тома? Интернеты гуглил, мануалы читал, но запутался окончательно.