硬盘扩容后，增加到lvm中，以下针对的是centos 7以前版本
1、查看原有磁盘信息
[root@vm132 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_vm132-LogVol01
7.5G 670M 6.5G 10% /
tmpfs 495M 0 495M 0% /dev/shm
/dev/sda1 488M 32M 431M 7% /boot
/dev/mapper/vg_vm132-LogVol00
9.5G 22M 9.0G 1% /home
2、查看vg信息
[root@vm132 ~]# vgdisplay
--- Volume group ---
VG Name vg_vm132
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
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 17.50 GiB
PE Size 4.00 MiB
Total PE 4479
Alloc PE / Size 4479 / 17.50 GiB
Free PE / Size 0 / 0
VG UUID iEINsi-H04G-0nnw-nlNk-7cn3-ajqK-2oHAIU
3、查看pv信息
[root@vm132 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name vg_vm132
PV Size 17.50 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 4479
Free PE 0
Allocated PE 4479
PV UUID Bsdf9l-0Fd6-vMOL-1YOi-kvkM-8nUe-Em3KfP
4、查看lv信息
[root@vm132 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/vg_vm132/LogVol01
LV Name LogVol01
VG Name vg_vm132
LV UUID ML4A49-2a3o-ZjQP-0hQf-xeJ5-34ox-cceWPN
LV Write Access read/write
LV Creation host, time vm132.wanghz.com, 2020-06-15 21:36:41 +0800
LV Status available
# open 1
LV Size 7.73 GiB
Current LE 1979
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg_vm132/LogVol00
LV Name LogVol00
VG Name vg_vm132
LV UUID Rc0FSV-5aA0-zMND-4Dmt-0asQ-CEeC-fR3IwM
LV Write Access read/write
LV Creation host, time vm132.wanghz.com, 2020-06-15 21:36:44 +0800
LV Status available
# open 1
LV Size 9.77 GiB
Current LE 2500
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
5、对新增磁盘空间进行分区
[root@vm132 ~]# fdisk /dev/sda
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003ed99
Device Boot Start End Blocks Id System
/dev/sda1 * 1 66 524288 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 66 327 2097152 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 327 2611 18349056 8e Linux LVM
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Selected partition 4
First cylinder (2611-3916, default 2611):
Using default value 2611
Last cylinder, +cylinders or +size{K,M,G} (2611-3916, default 3916):
Using default value 3916
Command (m for help): t
Partition number (1-4): 4
Hex code (type L to list codes): 8e
Changed system type of partition 4 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003ed99
Device Boot Start End Blocks Id System
/dev/sda1 * 1 66 524288 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 66 327 2097152 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 327 2611 18349056 8e Linux LVM
/dev/sda4 2611 3916 10483750 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: 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)
Syncing disks.
6、重启服务器
[root@vm132 ~]# init 6
7、创建pv卷
[root@vm132 ~]# pvcreate /dev/sda4
Physical volume "/dev/sda4" successfully created
8、扩容到vg中
[root@vm132 ~]# vgdisplay
--- Volume group ---
VG Name vg_vm132
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
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 17.50 GiB
PE Size 4.00 MiB
Total PE 4479
Alloc PE / Size 4479 / 17.50 GiB
Free PE / Size 0 / 0
VG UUID iEINsi-H04G-0nnw-nlNk-7cn3-ajqK-2oHAIU
[root@vm132 ~]# vgextend vg_vm132 /dev/sda4
Volume group "vg_vm132" successfully extended
[root@vm132 ~]# vgdisplay
--- Volume group ---
VG Name vg_vm132
System ID
Format lvm2
Metadata Areas 2
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 2
Act PV 2
VG Size 27.49 GiB
PE Size 4.00 MiB
Total PE 7038
Alloc PE / Size 4479 / 17.50 GiB
Free PE / Size 2559 / 10.00 GiB
VG UUID iEINsi-H04G-0nnw-nlNk-7cn3-ajqK-2oHAIU
9、扩容到lv中
[root@vm132 ~]# lvdisplay
--- Logical volume ---
LV Path /dev/vg_vm132/LogVol01
LV Name LogVol01
VG Name vg_vm132
LV UUID ML4A49-2a3o-ZjQP-0hQf-xeJ5-34ox-cceWPN
LV Write Access read/write
LV Creation host, time vm132.wanghz.com, 2020-06-15 21:36:41 +0800
LV Status available
# open 1
LV Size 7.73 GiB
Current LE 1979
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Path /dev/vg_vm132/LogVol00
LV Name LogVol00
VG Name vg_vm132
LV UUID Rc0FSV-5aA0-zMND-4Dmt-0asQ-CEeC-fR3IwM
LV Write Access read/write
LV Creation host, time vm132.wanghz.com, 2020-06-15 21:36:44 +0800
LV Status available
# open 1
LV Size 9.77 GiB
Current LE 2500
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
[root@vm132 ~]# lvextend -L +9.9G /dev/vg_vm132/LogVol00
Rounding size to boundary between physical extents: 9.90 GiB.
Size of logical volume vg_vm132/LogVol00 changed from 9.77 GiB (2500 extents) to 19.67 GiB (5035 extents).
Logical volume LogVol00 successfully resized.
10、刷新lv信息
[root@vm132 ~]# resize2fs /dev/vg_vm132/LogVol00
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/vg_vm132/LogVol00 is mounted on /home; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 2
Performing an on-line resize of /dev/vg_vm132/LogVol00 to 5155840 (4k) blocks.
The filesystem on /dev/vg_vm132/LogVol00 is now 5155840 blocks long.
11、查看最新磁盘空间
[root@vm132 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_vm132-LogVol01
7.5G 670M 6.5G 10% /
tmpfs 495M 0 495M 0% /dev/shm
/dev/sda1 488M 32M 431M 7% /boot
/dev/mapper/vg_vm132-LogVol00
20G 27M 19G 1% /home
