/etc, /usr, /opt, /srv, /var, /home, /root, /tmp, /sbin, /bin, /lib64, /lib are all critical system mountpoints that we do not support restoring using live restore.
These mountpoints should be restored using a live DVD.
WORKAROUND
If risk assessment has been done, and if it is believed that unmounting and restoring these affected mountpoints would not crash or shutdown the live system, you may proceed for the following steps to perform a restore.
/home (/dev/sda3 being the backing disk partition) will be used an example in below steps.
1. Verify there are no processes running on the mountpoint. If there are, proceed to stop the application or kill the processes.
lsof /home
2. Unmount the required mountpoints
umount /home
3. Mount the required mountpoint on another mountpoint
mkdir -p /home2
mount /dev/sda3 /home2
4. Perform the restore of the original /home to /home2
5. After the restore, remount the mountpoint back to the original mountpoint
umount /home2
mount /home
IMPORTANT: Risk assessment should be made before performing the above steps. We do not take responsibility for any live system crashing / shutdown from unmounting these mountpoints (Especially /etc, /usr, /srv, /var, /tmp, /sbin, /bin, /lib64, /lib)
