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4.5 TB lvm on RHEL 5.3


4.5 TB lvm on RHEL 5.3


I have 4.5TB volume on storage. i want to use all the space on RHEL5.3 for storing oracle database. since its more than 2TB so i used parted.

root#parted /dev/sdc
(parted)mklabel gpt
(parted) mkpart lvm 0 4501G
(parted) quit
Information: Don't forget to update /etc/fstab, if necessary.

since the partition id is "ee EFI GPT". i want to know do i have to change partition id to "8e".

i want to use this partition for oracle cluster.

Honored Contributor

Re: 4.5 TB lvm on RHEL 5.3


LVM partitions need to be type '8e', otherwise they'll not be found.

By the way, the valid partitions you are
mentioned in your question are:

ee GPT
ef EFI (FAT-12/16/,,,)



VK2COT - Dusan Baljevic
Honored Contributor

Re: 4.5 TB lvm on RHEL 5.3

Which tool are you using to check the partition type?

If it's fdisk, you're not seeing the real partition table, but the "protective MBR" that is part of the GPT partitioning system. Do not change the partition ID.

The GPT partitioning scheme includes the protective MBR because without it, the tools that only understand the old PC partition table would regard the GPT disk as unpartitioned. Those tools would then allow the creation of old-style partitions... which would be overlapping the real GPT partition(s).

To prevent this, the GPT creates a *fake* MBR that indicates the first 2 TB of the disk (which is all that the traditional MBR partition table can address) is occupied a partition of type 0xee. In effect, this is like posting a notice: "This disk is occupied. If you don't understand what EFI GPT means, don't touch it."

The GPT partitioning scheme includes a different system of partition types. The old partition IDs like 8e are specific to the old PC partitioning scheme: GPT uses different type identifiers.