asr.tech.notes

Here is the list of steps to reduce the  root file system (lv_root) on a RHEL 6 Linux server: Boot the system into rescue mode. Do not mount the file systems (select the option to 'Skip' in the rescue mode and start a shell) Bring the Volume Group online #lvm vgchange -a -y Run fsck on the FS #e2fsck -f /dev/vg_myhost/lv_root Resize the file system with new size #resize2fs -f /dev/vg_myhost/lv_root 20G Reduce the Logical Volume of the FS with the new size #lvreduce -L20G /dev/vg_myhost/lv_root Run fsck to make sure the FS is still ok #e2fsck -f /dev/vg_myhost/lv_root Optionally mount the file system in the rescue mode #mkdir -p /mnt/sysimage/root #mount -t ext4 /dev/mapper/vg_myhost-lv_root /mnt/sysimage/root #cd /mnt/sysimage/root Unmount the FS #cd #umount /mnt/sysimage/root Exit rescue mode and boot the system from the hard disk #exit Select the reboot option from the recue mode