My system is set up so that I take four devices, create a RAID 10 array out of them, create a physical volume, a volume group, and then three logical volumes, and lastly I create filesystems out of the logical volumes and mount them on my filesystem.
I know that
mdadm.conf exists to locate (or maybe recreate?) the RAID10 device on a restart of the system, and I know that
fstab exists to remount the logical volumes on the filesystem. However, I'm a little confused as to how to recreate the physical volume, volume group, and logical volumes on restart of the system. Is it the case that the volumes already exist on the RAID 10 device once it is located by its UUID and name so that I do not need to create them again, or is there some kind of configuration I need to set so that they are automatically created?