Centos7 adjusts the size of the root directory mount partition

Centos7 adjusts the size of the root directory mount partition#

Label: Adjust centos partition sizecentos

1. Situation preview​​

Second, the steps

1. Terminate the /home process

fuser -m -v -i -k /home​

2. Backup /home

cp -r  /home/  homebak/

3. Uninstall​ /home

umount /home

​4. Delete the lv where /home is located

lvremove /dev/mapper/centos-home

5. Extend the lv where /root is located, add 100G

lvextend -L +100G /dev/mapper/centos-root

​6. Extended/root file system

xfs_growfs /dev/mapper/centos-root

7. Recreate home lv

lvcreate -L 40G -n home centos

​8. Create a file system

mkfs.xfs /dev/centos/home

9. Mount

​mount /dev/centos/home /home

10. Restore /home related files and corresponding directory permissions

11. result:

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​Three, attach a screenshot of the operation