Damn ! I get “Unable to Read Partition Information”

You rescan your HBAs on the ESX and your new LUN suddenly appears. But when you want to add it as new datastore you get “Unable to Read Partition Information” . The same error happens on every ESX you try.

Ok, you have to know that only MS-DOS partitioned disks are recongnized by ESX. I had to face this issue once Storage team gave me the disk. It was re-assigned from a previous AIX system. So , heres what you can do :

Firts: Ensure the LunID and path are correct because all data will be destroyed.

1. esxcfg-vmhbdevs -q | grep LUNID

This will show you the canonical path for your LUN and the devicename

Use the devicename from step 1 to invoke parted tool.

2. parted /dev/sdc (The path showed before)

A new prompt will appear waiting for commands

3. mklabel msdos
4. Quit and try to Add a new Datastore again.

Good Luck !

VMware KB

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s