Linux

Redhat: Adjust LVM Partition Size

Check file system and LVM info

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# df -hT |grep rhel
/dev/mapper/rhel-root xfs  50G  49G  1G  99%
/dev/mapper/rhel-home xfs  ...  ...  ... ...
# lsblk
# lvs -v
# vgs -v
# pvs -v

Backup /home

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# tar zcf /p/home.tgz -C /home .

Unmount /home

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# umount -l /dev/mapper/rhel-home

Remove the /home logical volume

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# lvremove /dev/mapper/rhel-home

Recreate a new 500GB logical volume from /home, format and mount it

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# lvcreate -L 500GB -n home rhel
# mkfs.xfs /dev/rhel/home
# mount /dev/mapper/rhel-home

Extend your /root volume with all remaining space and resize (-r) the file system

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# lvextend -r -l +100%FREE /dev/mapper/rhel-root

Restore your backup of /home

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# tar xvf /p/home.tgz -C /home

Sync the changes

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# dracut --regenerate-all --force