最近老套路硬盘扩容报错
如下报错01)
[root@localhost ~]# pvcreate /dev/sda1 Device /dev/sda1 not found. [root@localhost ~]# pvcreate /dev/sda2 Device /dev/sda2 not found. [root@localhost ~]# pvcreate /dev/sda3 Device /dev/sda3 not found. 遇到这个报错是因为没有运行 partprobe
如下报错02)
[root@localhost ~]# vgextend centos /dev/sda1 Couldn't create temporary archive name. [root@localhost ~]# vgextend centos /dev/sda2 Couldn't create temporary archive name. [root@localhost ~]# vgextend centos /dev/sda3 Couldn't create temporary archive name.
这个通常是因为root partition 满了（根目录满了），清理一下文件再运行vgextend
如下报错03)
[root@localhost ~]# resize2fs /dev/centos/root resize2fs 1.42.9 (28-Dec-2013) resize2fs: Bad magic number in super-block while trying to open /dev/centos/root Couldn't find valid filesystem superblock.
报错原因是centos7 默认使用了xfs文件系统，
应该使用命令
xfs_growfs /dev/centos/root
所以
如果使用xfs文件系统
- xfs_growfs /dev/root_vg/root
如果使用ext4文件系统
- resize2fs /dev/root_vg/root