пересоздание таблицы разделов
1)
Проверяем размер диска (/dev/sda)
root@dctest-d:~#
lsblk
NAME
MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda
8:0 0 30G 0 disk
├─sda1
8:1 0 243M 0 part /boot
├─sda2
8:2 0 1K 0 part
└─sda5
8:5 0 29.8G 0 part
├─dctest--d--vg-root
254:0 0 25.8G 0 lvm /
└─dctest--d--vg-swap_1
254:1 0 4G 0 lvm [SWAP]
sr0
11:0 1 1024M 0 rom
3)
Выполняем сканирование диска (поиск
изменений)
root@dctest-d:~#
echo 1 > /sys/block/sda/device/rescan
4)
Проверяем изменения /dev/sda
root@dctest-d:~#
lsblk
NAME
MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda
8:0 0 48.8G 0 disk
├─sda1
8:1 0 243M 0 part /boot
├─sda2
8:2 0 1K 0 part
└─sda5
8:5 0 29.8G 0 part
├─dctest--d--vg-root
254:0 0 25.8G 0 lvm /
└─dctest--d--vg-swap_1
254:1 0 4G 0 lvm
[SWAP]
sr0
11:0 1 1024M 0 rom
5)
Выполняем изменения таблицы разделов
root@dctest-d:~#
fdisk /dev/sda
Welcome
to fdisk (util-linux 2.29.2).
Changes
will remain in memory only, until you decide to write them.
Be
careful before using the write command.
6)
Смотрим на размеры диска и существующих
разделов
Command
(m for help): p
Disk
/dev/sda: 48.8 GiB, 52428800000 bytes, 102400000 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
Disklabel
type: dos
Disk
identifier: 0xbb4a9424
Device
Boot Start End Sectors Size Id Type
/dev/sda1
* 2048 499711 497664 243M 83 Linux
/dev/sda2
501758 62912511 62410754 29.8G 5 Extended
/dev/sda5
501760 62912511 62410752 29.8G 8e Linux LVM
7)
Удаляем разделы, начиная с последнего
Command
(m for help): d
Partition
number (1,2,5, default 5): 5
Partition
5 has been deleted.
Command
(m for help): d
Partition
number (1,2, default 2): 2
Partition
2 has been deleted.
8)
Создаём дополнительный раздел (от
первого свободного блока и до конца
диска, соглашаясь на дефолтные значения
секторов)
Command
(m for help): n
Partition
type
p
primary (1 primary, 0 extended, 3 free)
e
extended (container for logical partitions)
Select
(default p): e
Partition
number (2-4, default 2):
First
sector (499712-102399999, default 499712):
Last
sector, +sectors or +size{K,M,G,T,P} (499712-102399999, default
102399999):
Created
a new partition 2 of type 'Extended' and of size 48.6 GiB.
Command
(m for help): n
All
space for primary partitions is in use.
Adding
logical partition 5
First
sector (501760-102399999, default 501760):
Last
sector, +sectors or +size{K,M,G,T,P} (501760-102399999, default
102399999):
Created
a new partition 5 of type 'Linux' and of size 48.6 GiB.
9)
НЕ УДАЛЯЕМ старую подпись раздела
Partition #5 contains a LVM2_member signature.
Do you want to remove the signature? [Y]es/[N]o: n
Do you want to remove the signature? [Y]es/[N]o: n
10)
Изменяем тип раздела на Linux LVM
Command
(m for help): t
Partition
number (1,2,5, default 5): 5
Partition
type (type L to list all types): 8e
Changed
type of partition 'Linux' to 'Linux LVM'.
11)
Проверяем размеры диска и созданных
разделов
Command
(m for help): p
Disk
/dev/sda: 48.8 GiB, 52428800000 bytes, 102400000 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
Disklabel
type: dos
Disk
identifier: 0xbb4a9424
Device
Boot Start End Sectors Size Id Type
/dev/sda1
* 2048 499711 497664 243M 83 Linux
/dev/sda2
499712 102399999 101900288 48.6G 5 Extended
/dev/sda5
501760 102399999 101898240 48.6G 8e Linux LVM
12)
Сохраняем изменения и выходим из fdisk
Command
(m for help): w
The
partition table has been altered.
Calling
ioctl() to re-read partition table.
Re-reading
the partition table failed.: Device or resource busy
The
kernel still uses the old table. The new table will be used at the
next reboot or after you run partprobe(8) or kpartx(8).
13)
Сообщаем системе об изменениях в разделах
root@dctest-d:~#
partprobe
14)
Проверяем изменения раздела sda5
root@dctest-d:~#
lsblk
NAME
MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda
8:0 0 48.8G 0 disk
├─sda1
8:1 0 243M 0 part /boot
├─sda2
8:2 0 512B 0 part
└─sda5
8:5 0 48.6G 0 part
├─dctest--d--vg-root
254:0 0 25.8G 0 lvm /
└─dctest--d--vg-swap_1
254:1 0 4G 0 lvm [SWAP]
sr0
11:0 1 1024M 0 rom
15)
LVM. Проверяем размер PV /dev/sda5
====================================
root@dctest-d:~#
pvdisplay
---
Physical volume ---
PV
Name /dev/sda5
VG
Name dctest-d-vg
PV
Size 29.76 GiB / not usable 2.00 MiB
Allocatable
yes (but full)
PE
Size 4.00 MiB
Total
PE 7618
Free
PE 0
Allocated
PE 7618
PV
UUID iiyna2-lRS7-7gPm-QZX2-kRpH-Ssw2-ehFBSz
16)
LVM. Изменяем размер PV /dev/sda5 и проверяем
это
root@dctest-d:~#
pvresize /dev/sda5
Physical
volume "/dev/sda5" changed
1
physical volume(s) resized / 0 physical volume(s) not resized
root@dctest-d:~#
pvdisplay
---
Physical volume ---
PV
Name /dev/sda5
VG
Name dctest-d-vg
PV
Size 48.59 GiB / not usable 2.00 MiB
Allocatable
yes
PE
Size 4.00 MiB
Total
PE 12438
Free
PE 4820
Allocated
PE 7618
PV
UUID iiyna2-lRS7-7gPm-QZX2-kRpH-Ssw2-ehFBSz
17)
LVM. Проверяем наличие свободного места
в VG после расширения /dev/sda5
root@dctest-d:~#
vgdisplay
---
Volume group ---
VG
Name dctest-d-vg
System
ID
Format
lvm2
Metadata
Areas 1
Metadata
Sequence No 4
VG
Access read/write
VG
Status resizable
MAX
LV 0
Cur
LV 2
Open
LV 2
Max
PV 0
Cur
PV 1
Act
PV 1
VG
Size 48.59 GiB
PE
Size 4.00 MiB
Total
PE 12438
Alloc
PE / Size 7618 / 29.76 GiB
Free
PE / Size 4820 / 18.83 GiB
VG
UUID 68qJjk-Uib6-AM1W-OCdG-3e2p-qmvs-IgCuJb
18)
LVM. Проверяем размер LV /dev/dctest-d-vg/root
root@dctest-d:~#
lvdisplay
---
Logical volume ---
LV
Path /dev/dctest-d-vg/root
LV
Name root
VG
Name dctest-d-vg
LV
UUID P6PiaC-thno-e5h7-Lo75-KM1v-Qpw4-2b5QSN
LV
Write Access read/write
LV
Creation host, time dctest-d, 2019-05-16 08:11:12 +0300
LV
Status available
#
open 1
LV
Size 25.76 GiB
Current
LE 6594
Segments
1
Allocation
inherit
Read
ahead sectors auto
-
currently set to 256
Block
device 254:0
---
Logical volume ---
LV
Path /dev/dctest-d-vg/swap_1
LV
Name swap_1
VG
Name dctest-d-vg
LV
UUID Xe11YQ-IYrD-D5Xs-5oQy-1b1r-VkQe-6AL4ab
LV
Write Access read/write
LV
Creation host, time dctest-d, 2019-05-16 08:11:12 +0300
LV
Status available
#
open 2
LV
Size 4.00 GiB
Current
LE 1024
Segments
1
Allocation
inherit
Read
ahead sectors auto
-
currently set to 256
Block
device 254:1
19)
LVM. Изменяем размер LV /dev/dctest-d-vg/root
и проверяем это
root@dctest-d:~#
lvextend -l +100%FREE /dev/dctest-d-vg/root
Size
of logical volume dctest-d-vg/root changed from 25.76 GiB (6594
extents) to 44.59 GiB (11414 extents).
Logical
volume dctest-d-vg/root successfully resized.
root@dctest-d:~#
lvdisplay
---
Logical volume ---
LV
Path /dev/dctest-d-vg/root
LV
Name root
VG
Name dctest-d-vg
LV
UUID P6PiaC-thno-e5h7-Lo75-KM1v-Qpw4-2b5QSN
LV
Write Access read/write
LV
Creation host, time dctest-d, 2019-05-16 08:11:12 +0300
LV
Status available
#
open 1
LV
Size 44.59 GiB
Current
LE 11414
Segments
2
Allocation
inherit
Read
ahead sectors auto
-
currently set to 256
Block
device 254:0
---
Logical volume ---
LV
Path /dev/dctest-d-vg/swap_1
LV
Name swap_1
VG
Name dctest-d-vg
LV
UUID Xe11YQ-IYrD-D5Xs-5oQy-1b1r-VkQe-6AL4ab
LV
Write Access read/write
LV
Creation host, time dctest-d, 2019-05-16 08:11:12 +0300
LV
Status available
#
open 2
LV
Size 4.00 GiB
Current
LE 1024
Segments
1
Allocation
inherit
Read
ahead sectors auto
-
currently set to 256
Block
device 254:1
17)
LVM. Проверяем отсутствие свободного
места в VG после расширения LV
/dev/dctest-d-vg/root
root@dctest-d:~#
vgdisplay
---
Volume group ---
VG
Name dctest-d-vg
System
ID
Format
lvm2
Metadata
Areas 1
Metadata
Sequence No 5
VG
Access read/write
VG
Status resizable
MAX
LV 0
Cur
LV 2
Open
LV 2
Max
PV 0
Cur
PV 1
Act
PV 1
VG
Size 48.59 GiB
PE
Size 4.00 MiB
Total
PE 12438
Alloc
PE / Size 12438 / 48.59 GiB
Free
PE / Size 0 / 0
VG
UUID 68qJjk-Uib6-AM1W-OcdG-3e2p-qmvs-IgCuJb
17)
FS. Проверяем свободное/занятое место
на файловой системе
root@dctest-d:~#
df -h
Filesystem
Size Used Avail Use% Mounted on
udev
2.0G 0 2.0G 0% /dev
tmpfs
396M 5.4M 391M 2% /run
/dev/mapper/dctest--d--vg-root
26G 794M 24G 4% /
tmpfs
2.0G 0 2.0G 0% /dev/shm
tmpfs
5.0M 0 5.0M 0% /run/lock
tmpfs
2.0G 0 2.0G 0% /sys/fs/cgroup
/dev/sda1
236M 37M 187M 17% /boot
tmpfs
396M 0 396M 0% /run/user/1000
18)
FS. Изменяем размер файловой системы и
проверяем это
root@dctest-d:~#
resize2fs /dev/mapper/dctest--d--vg-root
resize2fs
1.43.4 (31-Jan-2017)
Filesystem
at /dev/mapper/dctest--d--vg-root is mounted on /; on-line resizing
required
old_desc_blocks
= 4, new_desc_blocks = 6
The
filesystem on /dev/mapper/dctest--d--vg-root is now 11687936 (4k)
blocks long.
root@dctest-d:~#
df -h
Filesystem
Size Used Avail Use% Mounted on
udev
2.0G 0 2.0G 0% /dev
tmpfs
396M 5.4M 391M 2% /run
/dev/mapper/dctest--d--vg-root
44G 802M 41G 2% /
tmpfs
2.0G 0 2.0G 0% /dev/shm
tmpfs
5.0M 0 5.0M 0% /run/lock
tmpfs
2.0G 0 2.0G 0% /sys/fs/cgroup
/dev/sda1
236M 37M 187M 17% /boot
tmpfs
396M 0 396M 0% /run/user/1000
root@dctest-d:~#