[root@he~]#df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 877M 0 877M 0% /dev
tmpfs 896M 0 896M 0% /dev/shm
tmpfs 896M 8.7M 887M 1% /run
tmpfs 896M 0 896M 0% /sys/fs/cgroup
/dev/mapper/rl-root 70G 2.2G 68G 4% / #现在逻辑卷是70G--------------------------------
/dev/sr0 10G 10G 0 100% /mnt/cdrom
/dev/sda1 1014M 212M 803M 21% /boot
/dev/mapper/rl-home 127G 939M 126G 1% /home
tmpfs 180M 0 180M 0% /run/user/
[root@he~]#fdisk -l
Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 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: 0x884fdf57
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 2099199 2097152 1G 83 Linux
/dev/sda2 2099200 419430399 417331200 199G 8e Linux LVM
Disk /dev/mapper/rl-root: 70 GiB, 75161927680 bytes, 146800640 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 /dev/mapper/rl-swap: 2 GiB, 2181038080 bytes, 4259840 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 /dev/mapper/rl-home: 127 GiB, 136327462912 bytes, 266264576 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 /dev/sdb: 20 GiB, 21474836480 bytes, 41943040 sectors #新添加一块硬盘-------------------------------------
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[root@he~]#lsblk #这个命令也可以看见------------------------------------------------
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 200G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 199G 0 part
├─rl-root 253:0 0 70G 0 lvm /
├─rl-swap 253:1 0 2G 0 lvm [SWAP]
└─rl-home 253:2 0 127G 0 lvm /home
sdb 8:16 0 20G 0 disk #新添加的硬盘-------------------------------
sr0 11:0 1 10G 0 rom /mnt/cdrom
[root@he~]#vgdisplay
--- Volume group ---
VG Name rl
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size <199.00 GiB
PE Size 4.00 MiB #扩容之前先查看逻辑卷所在的卷组还有没有容量可以扩展了，如果没有需要先扩展卷组---------------------
Total PE 50943
Alloc PE / Size 50943 / <199.00 GiB
Free PE / Size 0 / 0
VG UUID sBkdQ0-QvEj-G8nS-iD67-dUdZ-I1pg-989anR
[root@he~]# pvcreate /dev/sdb #将sdb格式化魏物理卷-----------------------------------------------------
Physical volume "/dev/sdb" successfully created.
[root@he~]#pvdisplay #查看到格式化出来的物理卷sdb----------------------------------------------------
--- Physical volume ---
PV Name /dev/sda2
VG Name rl
PV Size <199.00 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 50943
Free PE 0
Allocated PE 50943
PV UUID sVJqiA-KB0e-LQMj-sgx3-WnmA-FyPn-uYcY3C
"/dev/sdb" is a new physical volume of "20.00 GiB"
--- NEW Physical volume ---
PV Name /dev/sdb
VG Name
PV Size 20.00 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID gtiWj5-uvuI-ifne-uBYi-D3wz-uE0X-ITxOoK
#将新的分区加入到卷组rl中 ----------------------------------------------------------------------
[root@he~]#vgextend rl /dev/sdb
Volume group "rl" successfully extended
[root@he~]# vgdisplay
--- Volume group ---
VG Name rl
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 218.99 GiB
PE Size 4.00 MiB
Total PE 56062
Alloc PE / Size 50943 / <199.00 GiB
Free PE / Size 5119 / <20.00 GiB #现在可以看到rl卷组空闲空间大小多了20G---------------------------------------
VG UUID sBkdQ0-QvEj-G8nS-iD67-dUdZ-I1pg-989anR
#给逻辑卷/dev/mapper/rl-root扩容-----------------------------------------------------
[root@he~]# lvextend -L +19G /dev/mapper/rl-root
Size of logical volume rl/root changed from 70.00 GiB (17920 extents) to 89.00 GiB (22784 extents).
Logical volume rl/root successfully resized.
#注意此时df -h是看不见逻辑卷空间变大，但是lvdisplay可以看见------------------------------------------------
[root@he~]# lvdisplay
--- Logical volume ---
LV Path /dev/rl/swap
LV Name swap
VG Name rl
LV UUID fKi3aU-AP0Z-CpW7-LQ2Q-R4KY-j1ei-rJ9Jan
LV Write Access read/write
LV Creation host, time 10.0.0.137, 2022-09-06 08:31:58 +0800
LV Status available
# open 2
LV Size 2.03 GiB
Current LE 520
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/rl/home
LV Name home
VG Name rl
LV UUID KYEUgN-LSCo-Xyl1-AHsR-Gngf-rUkT-5Y5Fgq
LV Write Access read/write
LV Creation host, time 10.0.0.137, 2022-09-06 08:31:58 +0800
LV Status available
# open 1
LV Size 126.96 GiB
Current LE 32503
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Logical volume ---
LV Path /dev/rl/root
LV Name root
VG Name rl
LV UUID Ou1bac-L5M0-o340-XssC-kVYM-yWiD-eiJSJG
LV Write Access read/write
LV Creation host, time 10.0.0.137, 2022-09-06 08:31:59 +0800
LV Status available
# open 1
LV Size 89.00 GiB #现在这里可以看见逻辑卷扩容了--------------------------------------------------------
Current LE 22784
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
#当给逻辑卷扩容之后并不是立马生效的，还要有一步，让扩容的空间生效-----------------------------------------------
[root@he~]#xfs_growfs /dev/mapper/rl-root # 等同于resiozee2fs----------------------------------------------
meta-data=/dev/mapper/rl-root isize=512 agcount=4, agsize=4587520 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1
data = bsize=4096 blocks=18350080, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=8960, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 18350080 to 23330816
[root@he~]#df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 877M 0 877M 0% /dev
tmpfs 896M 0 896M 0% /dev/shm
tmpfs 896M 8.7M 887M 1% /run
tmpfs 896M 0 896M 0% /sys/fs/cgroup
/dev/mapper/rl-root 89G 2.4G 87G 3% / #可以看见容量扩大了-------------------------------------------------------
/dev/sr0 10G 10G 0 100% /mnt/cdrom
/dev/sda1 1014M 212M 803M 21% /boot
/dev/mapper/rl-home 127G 939M 126G 1% /home
tmpfs 180M 0 180M 0% /run/user/0
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