[ovirt-users] Re: ovirt and gluster disk config

[Karli Sjöberg]

Den 23 maj 2018 16:05 skrev William Dossett :Hi Jayme, thanks for the info… yes I’ve been googling and googling… I run a few VMware VSANs at the moment so HCI is my specialty … even one in my basement   going to upgrade that to all flash soon as the 2TB disks are getting cheaper! A question more to the Red Hatters here, don't you have reference architecture for HCI?/K  I tried doing this a couple of years back as my post says but it was pretty much undoable then.  I guess I am going to go h/w raid to start and see how that is.  I haven’t got the money to put SSD in the 720s, but I do have 10Gb networking so hoping that will help on speed…  anyway, it’s a PoC so I am sure I will building and rebuilding a few times and trying to remember what I know of GlusterFS. RegardsBill   From: Jayme [mailto:jay...@gmail.com] Sent: Wednesday, May 23, 2018 6:25 AMTo: william.doss...@gmail.comCc: users Subject: Re: [ovirt-users] ovirt and gluster disk config Unfortunately there is not a lot of info out there about ideal hardware configs for hyperconverged oVirt (at least not that I have found to date, and believe me I've looked).  If you have enough drives and especially if they are spinning disks as far as I know your best option would likely be to do a RAID-10 config to make up a single glusterfs brick on each physical server.  Raid-10 will add some performance benefits and also give you some options to replace failed disks without bringing the brick offline.  The downfall is that you waste a ton of usable space with Raid + gluster because each offer redundancy.   I'm about to build a 3 node hyperconverted oVirt setup on Dell R720s myself, but I'm planning on using two 2Tb SSDs in JBOD configuration per host w/ a gluster replica 3.  I've gone back and forth on using JBOD or Raid config with SSDs and never did get a clear answer (online or asking on this mailing list).  SSDs are too expensive right now to lose half usable space to raid then another half or more to gluster replication.  On Tue, May 22, 2018 at 7:17 PM,  wrote:Hey,  been a few years since I looked at ovirt.   3 years probably and at the time I was looking for compute and storage all in one -and was advised not to basically.  So Hyperconvergence  is now a thing and want to try it out.  I was looking at the blog - up and running with ovirt 4.1, but it seems that is mostly for a lab setup.  I've got some real hardware I am going to try this out on as a PoC, 5 Dell R720s with 12 TB raw storage in each.  Just wondered if there was a guide to the hardware setup of my storage that I am missing?  Should I configure the storage as hardware RAID before I start installing the Nodes?  I did setup glusterfs cluster 3 years ago as well but memory fails me on how I had the RAID controller setup if at all.Thanks___Users mailing list -- users@ovirt.orgTo unsubscribe send an email to users-le...@ovirt.org ___Users mailing list -- users@ovirt.orgTo unsubscribe send an email to users-le...@ovirt.org___
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[ovirt-users] Re: ovirt and gluster disk config

[femi adegoke]

I'd be interested in what you guys come up with.
I've had the same questions regarding RAID (or non-raid) & hardware.
I wish there was some handy guide to follow.
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[ovirt-users] Re: ovirt and gluster disk config

[William Dossett]

Hi Jayme, thanks for the info… yes I’ve been googling and googling… I run a few 
VMware VSANs at the moment so HCI is my specialty … even one in my basement 😊  
going to upgrade that to all flash soon as the 2TB disks are getting cheaper!  

 

I tried doing this a couple of years back as my post says but it was pretty 
much undoable then.  I guess I am going to go h/w raid to start and see how 
that is.  I haven’t got the money to put SSD in the 720s, but I do have 10Gb 
networking so hoping that will help on speed…  anyway, it’s a PoC so I am sure 
I will building and rebuilding a few times and trying to remember what I know 
of GlusterFS.

 

Regards

Bill

 

 

 

From: Jayme [mailto:jay...@gmail.com] 
Sent: Wednesday, May 23, 2018 6:25 AM
To: william.doss...@gmail.com
Cc: users 
Subject: Re: [ovirt-users] ovirt and gluster disk config

 

Unfortunately there is not a lot of info out there about ideal hardware configs 
for hyperconverged oVirt (at least not that I have found to date, and believe 
me I've looked).  If you have enough drives and especially if they are spinning 
disks as far as I know your best option would likely be to do a RAID-10 config 
to make up a single glusterfs brick on each physical server.  Raid-10 will add 
some performance benefits and also give you some options to replace failed 
disks without bringing the brick offline.  The downfall is that you waste a ton 
of usable space with Raid + gluster because each offer redundancy.  

 

I'm about to build a 3 node hyperconverted oVirt setup on Dell R720s myself, 
but I'm planning on using two 2Tb SSDs in JBOD configuration per host w/ a 
gluster replica 3.  I've gone back and forth on using JBOD or Raid config with 
SSDs and never did get a clear answer (online or asking on this mailing list).  
SSDs are too expensive right now to lose half usable space to raid then another 
half or more to gluster replication. 

 

On Tue, May 22, 2018 at 7:17 PM, mailto:william.doss...@gmail.com> > wrote:

Hey,  been a few years since I looked at ovirt.   3 years probably and at the 
time I was looking for compute and storage all in one -and was advised not to 
basically.  So Hyperconvergence  is now a thing and want to try it out.  I was 
looking at the blog - up and running with ovirt 4.1, but it seems that is 
mostly for a lab setup.  I've got some real hardware I am going to try this out 
on as a PoC, 5 Dell R720s with 12 TB raw storage in each.  Just wondered if 
there was a guide to the hardware setup of my storage that I am missing?  
Should I configure the storage as hardware RAID before I start installing the 
Nodes?  I did setup glusterfs cluster 3 years ago as well but memory fails me 
on how I had the RAID controller setup if at all.

Thanks
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[ovirt-users] Re: ovirt and gluster disk config

[Jayme]

Unfortunately there is not a lot of info out there about ideal hardware
configs for hyperconverged oVirt (at least not that I have found to date,
and believe me I've looked).  If you have enough drives and especially if
they are spinning disks as far as I know your best option would likely be
to do a RAID-10 config to make up a single glusterfs brick on each physical
server.  Raid-10 will add some performance benefits and also give you some
options to replace failed disks without bringing the brick offline.  The
downfall is that you waste a ton of usable space with Raid + gluster
because each offer redundancy.

I'm about to build a 3 node hyperconverted oVirt setup on Dell R720s
myself, but I'm planning on using two 2Tb SSDs in JBOD configuration per
host w/ a gluster replica 3.  I've gone back and forth on using JBOD or
Raid config with SSDs and never did get a clear answer (online or asking on
this mailing list).  SSDs are too expensive right now to lose half usable
space to raid then another half or more to gluster replication.

On Tue, May 22, 2018 at 7:17 PM,  wrote:

> Hey,  been a few years since I looked at ovirt.   3 years probably and at
> the time I was looking for compute and storage all in one -and was advised
> not to basically.  So Hyperconvergence  is now a thing and want to try it
> out.  I was looking at the blog - up and running with ovirt 4.1, but it
> seems that is mostly for a lab setup.  I've got some real hardware I am
> going to try this out on as a PoC, 5 Dell R720s with 12 TB raw storage in
> each.  Just wondered if there was a guide to the hardware setup of my
> storage that I am missing?  Should I configure the storage as hardware RAID
> before I start installing the Nodes?  I did setup glusterfs cluster 3 years
> ago as well but memory fails me on how I had the RAID controller setup if
> at all.
>
> Thanks
> ___
> Users mailing list -- users@ovirt.org
> To unsubscribe send an email to users-le...@ovirt.org
>
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