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It is not something I would do online but I think it is possible. I guess you are using ext4. umount /home $ umount /home shrink the /home filesystem $ fsck -f /dev/mapper/VolGroup-lv_home $ resize2fs /dev/mapper/VolGroup-lv_home 80G shrink the /home logical volume $ lvreduce -L -40G /dev/mapper/VolGroup-lv_home resize the /home partition to the size of ...


You cannot resize or change at all any partition on a storage device that is currently mounted. That means that your system needs to be shutdown if you intend to modify the root partition (since you cannot unmount it) You will need to boot in an external OS (e.g. using a live-CD) to perform these tasks. I would recommend you to backup any sensible data ...

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