12:45 a.m.
4.3 Master is looking good!!
A few questions:
- In Step #2: Fqdns: for a 3 host cluster, are we to add the 2nd & 3rd
hosts?
- In Step #5: Bricks:
What effect does the RAID setting have?
Enable Dedupe & Compression is new?
Configure LV Cache: what do we enter for SSD? What happens if my disks
are already all SSD, do I still benefit from using this?
1:14 a.m.
This is the tweet that lead to my original question:
https://twitter.com/SandroBonazzola/status/1020321563638403072
2:11 a.m.
2018-07-23 7:45 GMT+02:00 femi adegoke <ovirt(a)fateknollogee.com>:
4.3 Master is looking good!!
Thanks for the feedback!
A few questions:
Adding Sahina and Gobinda for answering your quesitons.
- In Step #2: Fqdns: for a 3 host cluster, are we to add the 2nd & 3rd
hosts?
- In Step #5: Bricks:
What effect does the RAID setting have?
Enable Dedupe & Compression is new?
Configure LV Cache: what do we enter for SSD? What happens if my disks are
already all SSD, do I still benefit from using this?
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--
SANDRO BONAZZOLA
MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://red.ht/sig>
9:44 a.m.
Hi Femi/Sandro,
- In Step #2: Fqdns: for a 3 host cluster, are we to add the 2nd & 3rd
hosts?
Yes, Earlier the addition of 2nd and 3rd hosts was manual,Now we have
included along with deployment.
- In Step #5: Bricks:
What effect does the RAID setting have?
So basically If gluster drops in quorum then it will stop file
operations until quorum is back to normal.
So you need two bricks to write for quorum to be met.To overcome the
issue will have raid.
Enable Dedupe & Compression is new?
Yes it's a new feature and it's optional.
Configure LV Cache: what do we enter for SSD? What happens if my disks are
already all SSD, do I still benefit from using this?
I don't think you need to use LVM Cache if you are already using SSDs or
LVMe. LVM Cache is meant for to improve performance over HDDs by combining
with SSD as cache device.
On Mon, Jul 23, 2018 at 12:41 PM, Sandro Bonazzola <sbonazzo(a)redhat.com>
wrote:
2018-07-23 7:45 GMT+02:00 femi adegoke <ovirt(a)fateknollogee.com>:
> 4.3 Master is looking good!!
>
Thanks for the feedback!
>
> A few questions:
>
Adding Sahina and Gobinda for answering your quesitons.
>
> - In Step #2: Fqdns: for a 3 host cluster, are we to add the 2nd & 3rd
> hosts?
>
>
> - In Step #5: Bricks:
>
> What effect does the RAID setting have?
>
> Enable Dedupe & Compression is new?
>
> Configure LV Cache: what do we enter for SSD? What happens if my disks
> are already all SSD, do I still benefit from using this?
> _______________________________________________
> Users mailing list -- users(a)ovirt.org
> To unsubscribe send an email to users-leave(a)ovirt.org
> Privacy Statement: https://www.ovirt.org/site/privacy-policy/
> oVirt Code of Conduct: https://www.ovirt.org/communit
> y/about/community-guidelines/
> List Archives: https://lists.ovirt.org/archiv
> es/list/users(a)ovirt.org/message/JTGT4ZUVMISRSXHBX3YEDNYIKGZM6NFB/
>
>
--
SANDRO BONAZZOLA
MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://red.ht/sig>
--
Thanks,
Gobinda
10:18 a.m.
- In Step #5: Bricks:
What effect does the RAID setting have?
So basically If gluster drops in quorum then it will stop file
operations until quorum is back to normal.
So you need two bricks to write for quorum to be met.To overcome the
issue will have raid.
Gobinda, thx for the info.
In "Raid Type, Strip size & disk count", should that info supplied be based
on the hardware I'm using for the install?
for example, Data Disk Count - do I enter the quantity of disks I have on 1 host?
11 a.m.
Hi Femi,
Yes, the configuration should be based on Hardware you are using.
To clarify further about your RAID question:
Main usage of RAID in cockpit is to set the alignment values when creating
the lvm and filesystem. The settings provided should reflect the hardware
RAID configuration on the system, if the disks have been setup with RAID.
On Mon, 23 Jul 2018, 8:50 p.m. femi adegoke, <ovirt(a)fateknollogee.com>
wrote:
> - In Step #5: Bricks:
>
> What effect does the RAID setting have?
>
> So basically If gluster drops in quorum then it will stop file
> operations until quorum is back to normal.
>
> So you need two bricks to write for quorum to be met.To overcome the
> issue will have raid.
>
Gobinda, thx for the info.
In "Raid Type, Strip size & disk count", should that info supplied be
based on the hardware I'm using for the install?
for example, Data Disk Count - do I enter the quantity of disks I have on
1 host?
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11:53 a.m.
Hi Gobinda,
Thanks for more detail.
What if I use MDADM (instead of hardware RAID), do the settings change?
2:25 a.m.
Hi Femi,
So theoretically it should work.Certain things need to be taken care like
you need to provide correct MDADM configuration and in "Device" you need
to give the correct path.
We are not recommending MDADM because of performance issue and it will eat
more CPUs.
We have not tested with MDADM, but theoretically it should work.
Let me know if any issue.I will try to help.
On Mon, Jul 23, 2018 at 10:23 PM, femi adegoke <ovirt(a)fateknollogee.com>
wrote:
Hi Gobinda,
Thanks for more detail.
What if I use MDADM (instead of hardware RAID), do the settings change?
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--
Thanks,
Gobinda
3:07 a.m.
Hi Gobinda,
When you say "not recommending MDADM", does that apply to just this version 4.3
of oVirt or all versions of oVirt?
9:19 a.m.
Hi Gobinda,
When you say "not recommending MDADM", does that apply to just this version 4.3
of oVirt or all versions of oVirt?
8:25 p.m.
Thank you for the explanation, so from my understanding we can't have a hyperconverged
setup if more that 3 nodes are required? https://scdownloader.io or is it possible if
gluster is setup separate of the oVirt node installs?
1835
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2098
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11 comments
4 participants
participants (4)
-
femi adegoke -
Gobinda Das -
Sandro Bonazzola -
scdownloader.io＠gmail.com