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Created attachment 654003 [details]
attached the ovirt.log

Description of problem:
Boot from PXE, There should be two disk "/dev/sda" and /dev/sdb on host,Select device /dev/sda to use for booting RHEV-H, then enter into "Select the disk(s) to use for installation of RHEV Hypervisor" Page,select "Other Device", then click "Continue" Button to configure "Other Device" into "/dev/sda,/dev/sdb".
But rhev-h use Other Device(/dev/sda,/dev/sdb) to create HOSTVG cross 2 different disk failed.

No this issue when using "Other Device" item to Create HostVG on one disk.

Version-Release number of selected component (if applicable):
rhev-hypervisor6-6.4-20121126.0.el6

How reproducible:
100% 
  
Steps to Reproduce:
1. boot from PXE
2. Clean install rhev-h via TUI
3. Select device /dev/sda to use for booting RHEV-H
5. Enter into "Select the disk(s) to use for installation of RHEV Hypervisor" Page
 select "Other Device",then click "Continue" Button to configure "Other Device" into "/dev/sda,/dev/sdb".

Actual result:
After Step 5,Create HostVG cross 2 different disk failed by using "Other Device" item

Expect result:
After Step 5, Create HostVG cross 2 different disk should success by using "Other Device" item

Test version:
rhev-hypervisor6-6.4-20121212.1.el6 
ovirt-node-2.5.0-11.el6

Tested as follows:
1. boot from PXE
2. Clean install rhev-h via TUI
3. Select device /dev/sda to use for booting RHEV-H
5. Enter into "Select the disk(s) to use for installation of RHEV Hypervisor" Page
 select "Other Device",then click "Continue" Button to configure "Other Device" into "/dev/sda,/dev/sdb".

Create HostVG cross 2 different disk success by using "Other Device" item.

so this bug has been fixed, change the status into "VERIFIED"

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0556.html