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2022-07-02 07:35:00 【gaojingsong】

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Last login: Wed Jun 28 19:26:00 2022 from 123.189.233.143
[[email protected] ~]#
[[email protected] ~]# fdisk -l
磁盘大小为214G，但是挂载可用分区只有100G
磁盘 /dev/sda：214.7 GB, 214748364800 字节，419430400 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x000d0ed9

设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 209715199 103808000 8e Linux LVM
/dev/sda3 209715200 419430399 104857600 8e Linux LVM

磁盘 /dev/mapper/centos-root：53.7 GB, 53687091200 字节，104857600 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节

磁盘 /dev/mapper/centos-swap：2147 MB, 2147483648 字节，4194304 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节

磁盘 /dev/mapper/centos-home：50.5 GB, 50457477120 字节，98549760 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
查看磁盘容量
[[email protected] ~]# df -h
文件系统容量已用可用已用% 挂载点
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 4.0K 7.8G 1% /dev/shm
tmpfs 7.8G 50M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 50G 50G 349M 100% /
/dev/sda1 1014M 245M 770M 25% /boot
/dev/mapper/centos-home 47G 2.4G 45G 6% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0

创建pv(给刚刚新建的分区 /dev/sda3)，然后把pv加入vg中，相当于扩充vg的大小

[[email protected] ~]# pvcreate /dev/sda3
WARNING: ext4 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sda3.
Physical volume "/dev/sda3" successfully created.
您在 /var/spool/mail/root 中有新邮件
[[email protected]calhost ~]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 3 0 wz--n- <99.00g 4.00m

扩展vg，使用vgextend命令

[[email protected] ~]# vgextend centos /dev/sda3
Volume group "centos" successfully extended
您在 /var/spool/mail/root 中有新邮件
[[email protected] ~]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 2 3 0 wz--n- 198.99g 100.00g

查看lv大小

[[email protected] ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 46.99g
root centos -wi-ao---- 50.00g
swap centos -wi-ao---- 2.00g

扩展lv，使用lvextend命令
[[email protected] ~]#lvextend -L +40G /dev/mapper/centos-root
Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 90.00 GiB (23040 extents).
Logical volume centos/root successfully resized.
您在 /var/spool/mail/root 中有新邮件

扩展lv，使用lvextend命令

[[email protected] ~]# lvextend -L +20G /dev/mapper/centos-home
Size of logical volume centos/home changed from 46.99 GiB (12030 extents) to 66.99 GiB (17150 extents).
Logical volume centos/home successfully resized.
[[email protected] ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home centos -wi-ao---- 66.99g
root centos -wi-ao---- 90.00g
swap centos -wi-ao---- 2.00g

发现centos-root空间没有变化，使用命令xfs_growfs 使系统重新读取大小

[[email protected] ~]# df -h
文件系统容量已用可用已用% 挂载点
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 4.0K 7.8G 1% /dev/shm
tmpfs 7.8G 50M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 50G 50G 349M 100% /
/dev/sda1 1014M 245M 770M 25% /boot
/dev/mapper/centos-home 47G 2.4G 45G 6% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
您在 /var/spool/mail/root 中有新邮件
[[email protected] ~]# xfs_growfs /dev/mapper/centos-root
meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize=3276800 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=13107200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6400, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13107200 to 23592960
[[email protected] ~]# df -h
文件系统容量已用可用已用% 挂载点
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 4.0K 7.8G 1% /dev/shm
tmpfs 7.8G 50M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 90G 50G 41G 56% /
/dev/sda1 1014M 245M 770M 25% /boot
/dev/mapper/centos-home 47G 2.4G 45G 6% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
[[email protected] ~]# xfs_growfs /dev/mapper/centos-home
meta-data=/dev/mapper/centos-home isize=512 agcount=4, agsize=3079680 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=12318720, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6015, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 12318720 to 17561600
您在 /var/spool/mail/root 中有新邮件
[[email protected] ~]# df -h
文件系统容量已用可用已用% 挂载点
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 4.0K 7.8G 1% /dev/shm
tmpfs 7.8G 50M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/mapper/centos-root 90G 50G 41G 56% /
/dev/sda1 1014M 245M 770M 25% /boot
/dev/mapper/centos-home 67G 2.4G 65G 4% /home
tmpfs 1.6G 0 1.6G 0% /run/user/0
[[email protected] ~]#

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版权声明
本文为[gaojingsong]所创，转载请带上原文链接，感谢
https://blog.csdn.net/gaojingsong/article/details/125521210

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