I have a system running:
that has already some file systems created:
And there is a need to add one more file system of 500Gb, in which the storage admin has already provided me with.
But I see that the other file systems have their volume group with some nomenclature that I am not aware of it, in term of skills, like: /dev/mapper/vg, but as far as I know to create a new file system I just have to fdisk -l the required LUN, them choose 8e as the partition type, them pvcreate, vgcreate and lastly lvcreate.
But I am not sure this is the correct procedure, because the other file systems present on the system have this /dev/mapper.
Please correct me if I am wrong with my procedure
It is OK, that's the virtual interface that it is created when you use LVM. When you create a new logical volume these links are created by the kernel based framework device mapper; mapping target devices with its virtual layer table.
For example: vg_outsystemdb is the name that the administrator chose when creating the volume group, using vgcreate vg_outsystemdb /dev/sd{a,b,...}
It can be any descriptive name, nothing especial. lv_home is the name when the lv was created using lvcreate -L198G -n lv_home vg_outsystemdb
The -n is for name and it can be any descriptive name, followed by the volume group label.
Now, if you have some block storage of 500G, you can continue the scheme that appears in the df -h output, i.e.
You can create another volume as
and
That will show as /dev/mapper/vg02-lvol1 in your system
Or you can add that block storage to the current group volume
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