linux机器根分区硬盘LVM扩展方法
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2023-06-16
11:14:46
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原始参考文档链接及出处
https://www.rootusers.com/how-to-increase-the-size-of-a-linux-lvm-by-adding-a-new-
disk/
linux 根分区磁盘 LVM 拉升文档，请先仔细浏览出处文档和如下的实践教程，然后在按文档
操作。
1. 行业云平台添加新的磁盘到目标机器上。步骤略
2. 检查系统的磁盘信息和状态，并添加磁盘
[root@zabbix-mariadb ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 36G 14G 23G 37% / #待扩容的分区
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 561M 7.3G 8% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/vda1 497M 126M 371M 26% /boot
tmpfs 1.6G 0 1.6G 0% /run/user/0
tmpfs 7.8G 0 7.8G 0% /tmp
[root@zabbix-mariadb ~]# fdisk -l
Disk /dev/vda: 107.4 GB, 107374182400 bytes, 209715200 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 label type: dos
Disk identifier: 0x0004c100
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 1026047 512000 83 Linux
/dev/vda2 1026048 83886079 41430016 8e Linux LVM
Disk /dev/mapper/centos-root: 38.2 GB, 38214303744 bytes, 74637312 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/centos-swap: 4160 MB, 4160749568 bytes, 8126464 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
（已添加的 300G 盘，待扩容）
Disk /dev/vdb: 322.1 GB, 322122547200 bytes, 629145600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
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