Hi All,
Hope someone can help me with this.
I have noticed that on some of the servers i am currently administering there is a difference in the setup of some of the LVM disks.
Some of the disks have been created by SN disk allocated, disk partitioned using type 8e over the entire disk, then pv/vg/lv create being completed on the 8e disk.
Others have been setup without the fdisk step so pc/vg/lv creation has been done direct onto raw SAN disk.
There is supposed to be a performance increase by using raw disk as the OS.
So my question is, do you still get performance a increase when using LVM on raw disk the same as you would by using raw disk directly?
And should LVM be created onto raw disk or onto a partitioned device if there is no performance benefit? Is there any best practice around this, there are plenty of guides on how to set this up but nothing to say which way is preferable.
Thanks in advance.
Tom