Well, I tried both of the following:
1. Having only a boot partition and a PV for the OS that does not take
up the entire disk, and then specifying "sda" in Hosted Engine Setup.
2. Having not only a boot partition and a PV for the OS, but also an
empty (and not formatted) /dev/sda3 PV that I created with fdisk.
Then, specfying "sda3" in Hosted Engine Setup.

Both attempts resulted in errors like this:
failed: [centerpoint.ad.depaulo.org] (item=/dev/sda3) => {"failed":
true, "failed_when_result": true, "item": "/dev/sda3", "msg": "
Device /dev/sda3 not found (or ignored by filtering).\n", "rc": 5}

It seems like having gluster bricks on the same disk as the OS doesn't
work at all.

I am going to buy separate OS SSDs.

-Mike

On Tue, May 9, 2017 at 6:22 AM, Mike DePaulo <mikedep333@gmail.com> wrote:
> On Mon, May 8, 2017 at 9:00 AM, knarra <knarra@redhat.com> wrote:
>> On 05/07/2017 04:48 PM, Mike DePaulo wrote:
>>>
>>> Hi. I am trying to follow this guide. Is it possible to use part of my
>>> OS disk /dev/sda for the bricks?
>>>
>>> https://www.ovirt.org/blog/2017/04/up-and-running-with-ovirt-4-1-and-gluster-storage/
>>>
>>> I am using oVirt Node 4.1.1.1. I am aware of the manual partitioning
>>> requirements. I am guessing I have to create an LV for the OS that
>>> does not take up the entire disk during install, manually create a pv
>>> like /dev/sda3 afterwards, and then run Hosted Engine Setup and
>>> specify /sda3 rather than sdb?
>>>
>>> Thanks,
>>> -Mike
>>> _______________________________________________
>>> Users mailing list
>>> Users@ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>> Hi Mike,
>>
>>     If you create gluster bricks on the same disk as OS it works but we do
>> not recommend setting up gluster bricks on the same disk as the os. When
>> user tries to create a gluster volume using by specifying the bricks from
>> root partition it displays an error message "Bricks in root parition not
>> recommended and use force at the end to create volume".
>>
>> Thanks
>>
>> kasturi
>>
>
> Thank you very much. Is my process for doing this (listed in my
> original email) correct though?
>
> -Mike
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