记录一次CentOS7根扩容

最新推荐文章于 2024-04-10 22:02:23 发布

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最新推荐文章于 2024-04-10 22:02:23 发布

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记录一次CentOS7根扩容

[root@kn2kn2 ~]# lsblk
......
  ├─centos-root 253:0    0   17G  0 lvm  /
......
sdb               8:16   0   50G  0 disk
......

[root@kn2kn2 ~]# pvcreate /dev/sdb
  Physical volume "/dev/sdb" successfully created.
  
[root@kn2kn2 ~]# vgs
 ......
  centos   1   2   0 wz--n- <19.00g    0
  .....
  
[root@kn2kn2 ~]# vgextend centos /dev/sdb
  Volume group "centos" successfully extended
  
[root@kn2kn2 ~]# lvscan
......
  ACTIVE            '/dev/centos/root' [<17.00 GiB] inherit
  ......
  
[root@kn2kn2 ~]# lvextend -L +10G /dev/centos/root
  Size of logical volume centos/root changed from <17.00 GiB (4351 extents) to <27.00 GiB (6911 extents).
  Logical volume centos/root successfully resized.
  
[root@kn2kn2 ~]# xfs_growfs /dev/centos/root
......

[root@kn2kn2 ~]# df -Th
......
/dev/mapper/centos-root xfs        27G  2.8G   25G   11% /
......
失败补救
[root@kn2kn2 ~]# xfs_growfs /
......
将剩余vg空间添加上去
[root@kn2kn2 ~]#lvextend -l    +100%FREE   /dev/centos/root
......