RHEL 6 PV Size Limit

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Im only seeing 2 TB of a 3TB disk from the SAN, on a RHEL 6 server, using lvm2. What are the PV limits of RHEL 6? Is there a workaround for seing the full 3 TB?

JL
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Responses

PS Guru 6494 points
4 February 2015 9:41 PM

Jeremie,

What does dmesg show the size of the LUN as? or alternatively fdisk -l?
Are you creating a partition on the disk before attempting to create the PV? If so, you will need to use parted or gparted.

This thread may assist (see the post from James Radtke):
https://access.redhat.com/discussions/726083

JL Active Contributor 120 points
4 February 2015 10:00 PM

dmesg also showed the device as 2TB....
4294967296 512-byte logical blocks: (2.19 TB/2.00 TiB)
I was just going to add the 3TB to a Volgroup....i didnt try to partition it. I ran multipath -ll to verify the disk after it was presented and saw that it was 2TB.

Im not sure what fdisk would have shown...I sent the disk back to be put into smaller disk for striping since this is going to be for a database. I can have then present me another just to see....

rhn-support-mflitter's picture Red Hat Guru 1638 points
5 February 2015 10:01 AM

Hi Jeremie,

Just to confirm the suggestions from PixelDrift and James Radtke, we do have a solution that discusses the msdos disk label limits in https://access.redhat.com/solutions/693433.

Please us know if the GPT solution works for you.

Best regards,
Mark

JL Active Contributor 120 points
6 February 2015 2:14 PM

Mark,
Thank you for your response, however Im having an issue seeing a raw disk over 2TB, Im not trying to partition or fdisk over 2TB of a disk.

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