On Mon, Jul 30, 2018 at 7:09 PM, Jayme <jaymef(a)gmail.com> wrote:
Hello,
Thanks for the feedback. I don't "need" to create only one data domain,
I'm more or less trying to confirm whether or not it is proper to configure
multiple data domains or if I was mis-understanding the setup procedure.
So if I am correct, you are saying that if I have 2 JBOD storage devices
in each host that best practice is for each of those to have its own data
volume?
Like this for example:
ENGINE = SDA (device 1) = 100gb
DATA = SDB (device 2) = 2000gb
VMSTORE = SDA (device 1) = 500gb
DATA2 = SDA (device 1) = 1100gb
> That would allocate all the space available on both of my drives (2x2tb)
> and create two data volumes, a 2TB one on SDB device and a 1.1TB on SDA
> device. SDA device would also be used for engine and vmstore volumes. Is
> this correct configuration for two JBOD devices per host?
Looks good. I'm assuming you're using VMStore to host ISOs and not VM OS
disks?
> On Mon, Jul 30, 2018 at 10:31 AM, Sahina Bose <sabose(a)redhat.com> wrote:
>
>
>>
On Mon, Jul 30, 2018 at 6:46 PM, Jayme <jaymef(a)gmail.com> wrote:
>
>>> It's nice to know someone else out there has
these questions as well.
>>> What I'd really like confirmation on is basically this: In a JBOD oVirt
>>> HCI configuration with multiple disk devices per host node is it possible
>>> to have just one data volume or is it necessary to create multiple data
>>> volumes (one or more per each physical disk you want to store vm data on)?
>>> Meaning if I had 4 JBOD disks in each node and I wanted VM data to be
>>> stored and accessed on all 4 would I need to create 4 different data
>>> volumes (one per disk). And if so would they have to have unique names and
>>> brick dirs/mount points?
>>
>
>>
The guideline is to create 1 brick per device and this is what the
>> Cockpit UI implements. When you group together all 4 JBOD disks to form 1
>> brick - you're essentially setting up 1 large brick without any hardware
>> RAID protection for the disks. Any 1 of the disk failure would cause the
>> entire brick to be unavailable and would require healing the whole brick.
>> So if you had 4 1TB disks, you would end up creating a 4TB brick which
>> needs healing - not the best of scenarios.
>
>> Why do you need to create 1 data storage domain
instead of multiple?
>
>
>>> - James
>>
>>
>>> On Mon, Jul 30, 2018 at 10:09 AM,
<william.dossett(a)gmail.com> wrote:
>>
>>>> Hi James... I'm
in sort of the same position... I have 6 JBOD drives in
>>>> each node. I am unsure if I am going to wind up with 6 data stores. I
>>>> have 5 nodes and have other problems related to when I add those nodes
>>>> further complicating the gluster issue. Hopefully someone can help
clear
>>>> this up as its the last hurdle I face before starting to actually put
work
>>>> loads on this and connecting it into our ManageIQ environment.
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>>>
>>
>>
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>>
>>
>