10:59 p.m.
--Apple-Mail=_0375DE21-EDF5-4C87-B0F3-BC852CDA9E3B
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=us-ascii
Hi All,
I've done a lot of reading and lots of comparison of different =
hypervisors and tools and have decided that oVirt would be the best =
option. My initial use case is a not too new server that I will setup to =
run multiple development environments for the devs here, but I wanted =
something that will scale out to production as the vm infrastructure, =
hardware, etc. grows here.
I'll soon have a second server to run my vm's on and want to setup a =
self-hosted engine. I'm trying to find the most recent version of a =
how-to on the same. I found a presentation showing off how much easier =
it is to do this in oVirt 3.6 but can't find the correct docs. I seem to =
always end up with 3.5 or older versions. Can someone point me at a =
how-to of how to best achieve this.=20
Also, while I have you all here... :-)
Is it possible to setup the hypervisor hosts themselves as NFS servers =
to create Storage (I realize that this will play havoc with the HA). We =
do have an NFS server that we will be upgrading to add storage and =
faster drives, but I was thinking that I may be able to use the internal =
storage of the hypervisors themselves as a short term stopgap and then =
migrate vm's to the upgraded NFS server later. Will that even work, or =
will it break somehow?
Any advice for a new install would be welcome.
Thank you=20
Cheers,
Gervais
--Apple-Mail=_0375DE21-EDF5-4C87-B0F3-BC852CDA9E3B
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=us-ascii
<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi All,<div class=3D""><br
class=3D""></div><div =
class=3D"">I've done a lot of reading and lots of comparison of =
different hypervisors and tools and have decided that oVirt would be the =
best option. My initial use case is a not too new server that I will =
setup to run multiple development environments for the devs here, but I =
wanted something that will scale out to production as the vm =
infrastructure, hardware, etc. grows here.</div><div
class=3D""><br =
class=3D""></div><div class=3D"">I'll soon have a
second server to run =
my vm's on and want to setup a self-hosted engine. I'm trying to find =
the most recent version of a how-to on the same. I found a presentation =
showing off how much easier it is to do this in oVirt 3.6 but can't find =
the correct docs. I seem to always end up with 3.5 or older versions. =
Can someone point me at a how-to of how to best achieve =
this. </div><div class=3D""><br
class=3D""></div><div =
class=3D"">Also, while I have you all here... :-)</div><div
class=3D"">Is =
it possible to setup the hypervisor hosts themselves as NFS servers to =
create Storage (I realize that this will play havoc with the HA). We do =
have an NFS server that we will be upgrading to add storage and faster =
drives, but I was thinking that I may be able to use the internal =
storage of the hypervisors themselves as a short term stopgap and then =
migrate vm's to the upgraded NFS server later. Will that even work, or =
will it break somehow?<br class=3D""><div
class=3D""><br =
class=3D"webkit-block-placeholder"></div><div
class=3D"">Any advice for =
a new install would be welcome.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Thank
you </div><div class=3D"">
<div style=3D"color: rgb(0, 0, 0); font-variant: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: -webkit-auto; =
text-indent: 0px; text-transform: none; white-space: normal; widows: 2; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><span
class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-variant: =
normal; letter-spacing: normal; line-height: normal; orphans: 2; =
text-align: -webkit-auto; text-indent: 0px; text-transform: none; =
white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: =
0px;"><br class=3D"Apple-interchange-newline">Cheers,<br =
class=3D"">Gervais</span></div>
</div>
<br class=3D""></div></body></html>=
--Apple-Mail=_0375DE21-EDF5-4C87-B0F3-BC852CDA9E3B--
11:47 p.m.
On Tue, Dec 1, 2015 at 10:59 PM, Gervais de Montbrun <gervais(a)demontbrun.com
wrote:
Hi All,
I've done a lot of reading and lots of comparison of different hypervisors
and tools and have decided that oVirt would be the best option. My initial
use case is a not too new server that I will setup to run multiple
development environments for the devs here, but I wanted something that
will scale out to production as the vm infrastructure, hardware, etc. grows
here.
I'll soon have a second server to run my vm's on and want to setup a
self-hosted engine. I'm trying to find the most recent version of a how-to
on the same. I found a presentation showing off how much easier it is to do
this in oVirt 3.6 but can't find the correct docs. I seem to always end up
with 3.5 or older versions. Can someone point me at a how-to of how to best
achieve this.
http://www.ovirt.org/Features/HEApplianceFlow
Also, while I have you all here... :-)
Is it possible to setup the hypervisor hosts themselves as NFS servers to
create Storage (I realize that this will play havoc with the HA). We do
have an NFS server that we will be upgrading to add storage and faster
drives, but I was thinking that I may be able to use the internal storage
of the hypervisors themselves as a short term stopgap and then migrate vm's
to the upgraded NFS server later. Will that even work, or will it break
somehow?
What you are asking for is generally called hyper-convergence. We tried to
have it for 3.6 with glusterfs on each node but it wasn't valuated stable
enough to be released. We are still working on that for the next release.
Any advice for a new install would be welcome.
Thank you
Cheers,
Gervais
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
2:23 a.m.
--Apple-Mail=_1E8C93F2-E6A2-4E71-AF6F-60C2D12F4FA0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=us-ascii
Simone,
Thanks so much for the quick reply with the link. Much obliged.
How far off is hyper-convergence? If it is close, I could possibly wait.
Cheers,
Gervais
On Dec 1, 2015, at 6:47 PM, Simone Tiraboschi
<stirabos(a)redhat.com> =
wrote:
=20
=20
=20
On Tue, Dec 1, 2015 at 10:59 PM, Gervais de Montbrun =
<gervais(a)demontbrun.com
<mailto:gervais@demontbrun.com>> wrote:
Hi All,
=20
I've done a lot of reading and lots of comparison of different =
hypervisors
and tools and have decided that oVirt would be the best =
option. My initial use case is a not too new server that I will setup to =
run multiple development environments for the devs here, but I wanted =
something that will scale out to production as the vm infrastructure, =
hardware, etc. grows here.
=20
I'll soon have a second server to run my vm's on and want to setup a =
self-hosted engine. I'm trying to find the most recent version of a =
how-to on the same. I found a presentation showing off how much easier =
it is to do this in oVirt 3.6 but can't find the correct docs. I seem to =
always end up with 3.5 or older versions. Can someone point me at a =
how-to of how to best achieve this.
<http://www.ovirt.org/Features/HEApplianceFlow>
=20
=20
Also, while I have you all here... :-)
Is it possible to setup the hypervisor hosts themselves as NFS servers =
to create
Storage (I realize that this will play havoc with the HA). We =
do have an NFS server that we will be upgrading to add storage and =
faster drives, but I was thinking that I may be able to use the internal =
storage of the hypervisors themselves as a short term stopgap and then =
migrate vm's to the upgraded NFS server later. Will that even work, or =
will it break somehow?
=20
What you are asking for is generally called hyper-convergence. We =
tried to have
it for 3.6 with glusterfs on each node but it wasn't =
valuated stable enough to be released. We are still working on that for =
the next release.
=20
Any advice for a new install would be welcome.
=20
Thank you=20
=20
Cheers,
Gervais
=20
=20
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>
http://lists.ovirt.org/mailman/listinfo/users =
<http://lists.ovirt.org/mailman/listinfo/users>
=20
=20
--Apple-Mail=_1E8C93F2-E6A2-4E71-AF6F-60C2D12F4FA0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset=us-ascii
<html><head><meta http-equiv=3D"Content-Type"
content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Simone,<div class=3D""><br
class=3D""></div><div =
class=3D"">Thanks so much for the quick reply with the link. Much =
obliged.</div><div class=3D""><br
class=3D""></div><div class=3D"">How =
far off is hyper-convergence? If it is close, I could possibly =
wait.<br class=3D""><div class=3D"">
<div style=3D"color: rgb(0, 0, 0); font-variant: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: -webkit-auto; =
text-indent: 0px; text-transform: none; white-space: normal; widows: 2; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><span
class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-variant: =
normal; letter-spacing: normal; line-height: normal; orphans: 2; =
text-align: -webkit-auto; text-indent: 0px; text-transform: none; =
white-space: normal; widows: 2; word-spacing: 0px; border-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-stroke-width: =
0px;"><br class=3D"Apple-interchange-newline">Cheers,<br =
class=3D"">Gervais</span></div>
</div>
<br class=3D""><div><blockquote type=3D"cite"
class=3D""><div =
class=3D"">On Dec 1, 2015, at 6:47 PM, Simone Tiraboschi <<a =
href=3D"mailto:stirabos@redhat.com"
class=3D"">stirabos(a)redhat.com</a>&gt;=
wrote:</div><br class=3D"Apple-interchange-newline"><div
class=3D""><div =
dir=3D"ltr" class=3D""><br class=3D""><div
class=3D"gmail_extra"><br =
class=3D""><div class=3D"gmail_quote">On Tue, Dec 1, 2015 at
10:59 PM, =
Gervais de Montbrun <span dir=3D"ltr" class=3D""><<a
=
href=3D"mailto:gervais@demontbrun.com" target=3D"_blank" =
class=3D"">gervais(a)demontbrun.com</a>&gt;</span> wrote:<br
=
class=3D""><blockquote class=3D"gmail_quote"
style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left=
-style:solid;padding-left:1ex"><div style=3D"word-wrap:break-word" =
class=3D"">Hi All,<div class=3D""><br
class=3D""></div><div =
class=3D"">I've done a lot of reading and lots of comparison of =
different hypervisors and tools and have decided that oVirt would be the =
best option. My initial use case is a not too new server that I will =
setup to run multiple development environments for the devs here, but I =
wanted something that will scale out to production as the vm =
infrastructure, hardware, etc. grows here.</div><div
class=3D""><br =
class=3D""></div><div class=3D"">I'll soon have a
second server to run =
my vm's on and want to setup a self-hosted engine. I'm trying to find =
the most recent version of a how-to on the same. I found a presentation =
showing off how much easier it is to do this in oVirt 3.6 but can't find =
the correct docs. I seem to always end up with 3.5 or older versions. =
Can someone point me at a how-to of how to best achieve this. =
</div></div></blockquote><div class=3D""><br
class=3D""></div><div =
class=3D""><a
href=3D"http://www.ovirt.org/Features/HEApplianceFlow" =
class=3D"">http://www.ovirt.org/Features/HEApplianceFlow<... =
class=3D""></div><div
class=3D""> </div><div =
class=3D""> </div><blockquote
class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left=
-style:solid;padding-left:1ex"><div style=3D"word-wrap:break-word" =
class=3D""><div class=3D""></div><div
class=3D"">Also, while I have you =
all here... :-)</div><div class=3D"">Is it possible to setup the =
hypervisor hosts themselves as NFS servers to create Storage (I realize =
that this will play havoc with the HA). We do have an NFS server that we =
will be upgrading to add storage and faster drives, but I was thinking =
that I may be able to use the internal storage of the hypervisors =
themselves as a short term stopgap and then migrate vm's to the upgraded =
NFS server later. Will that even work, or will it break =
somehow?</div></div></blockquote><div class=3D""><br
class=3D""></div><div=
class=3D"">What you are asking for is generally called =
hyper-convergence. We tried to have it for 3.6 with glusterfs on each =
node but it wasn't valuated stable enough to be released. We are =
still working on that for the next release.</div><div
class=3D""> <br=
class=3D""></div><blockquote class=3D"gmail_quote"
style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left=
-style:solid;padding-left:1ex"><div style=3D"word-wrap:break-word" =
class=3D""><div class=3D""><div
class=3D"">Any advice for a new install =
would be welcome.</div><div class=3D""><br
class=3D""></div><div =
class=3D"">Thank you </div><div class=3D"">
<div style=3D"font-variant: normal; letter-spacing: normal; line-height: =
normal; text-align: -webkit-auto; text-indent: 0px; text-transform: =
none; white-space: normal; word-spacing: 0px; word-wrap: break-word;" =
class=3D""><span style=3D"border-collapse: separate; font-variant: =
normal; letter-spacing: normal; line-height: normal; text-align: =
-webkit-auto; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; border-spacing: 0px;" class=3D""><br =
class=3D"">Cheers,<br
class=3D"">Gervais</span></div>
</div>
<br class=3D""></div></div><br =
class=3D"">_______________________________________________<br
class=3D"">
Users mailing list<br class=3D"">
<a href=3D"mailto:Users@ovirt.org"
class=3D"">Users(a)ovirt.org</a><br =
class=3D"">
<a href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">http://lists.ovirt.org/mailman/listinfo/users<... =
class=3D"">
<br class=3D""></blockquote></div><br
class=3D""></div></div>
</div></blockquote></div><br
class=3D""></div></body></html>=
--Apple-Mail=_1E8C93F2-E6A2-4E71-AF6F-60C2D12F4FA0--
8:16 a.m.
On 01/12/2015 2:47 PM, Simone Tiraboschi wrote:
What you are asking for is generally called hyper-convergence. We
tried
to have it for 3.6 with glusterfs on each node but it wasn't valuated
stable enough to be released. We are still working on that for the next
release.
In such a setup (GlusterFS running on 3+ nodes, sharing their storage),
is this also basically what VMware's "vSAN" is? It seems very similar,
at least.
Regards,
Alan
11:15 a.m.
On Thu, Dec 3, 2015 at 8:16 AM, Alan Murrell <lists(a)murrell.ca> wrote:
On 01/12/2015 2:47 PM, Simone Tiraboschi wrote:
What you are asking for is generally called hyper-convergence. We tried
> to have it for 3.6 with glusterfs on each node but it wasn't valuated
> stable enough to be released. We are still working on that for the next
> release.
>
In such a setup (GlusterFS running on 3+ nodes, sharing their storage), is
this also basically what VMware's "vSAN" is? It seems very similar, at
least.
Yes, the general architecture would be not that different.
Regards,
Alan
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
3:10 p.m.
On Tuesday, December 01, 2015 05:59:59 PM Gervais de Montbrun wrote:
Hi All,
I've done a lot of reading and lots of comparison of different hypervisors
and tools and have decided that oVirt would be the best option. My initial
use case is a not too new server that I will setup to run multiple
development environments for the devs here, but I wanted something that
will scale out to production as the vm infrastructure, hardware, etc. grows
here.
I'll soon have a second server to run my vm's on and want to setup a
self-hosted engine. I'm trying to find the most recent version of a how-to
on the same. I found a presentation showing off how much easier it is to do
this in oVirt 3.6 but can't find the correct docs. I seem to always end up
with 3.5 or older versions. Can someone point me at a how-to of how to best
achieve this.
Also, while I have you all here... :-)
Is it possible to setup the hypervisor hosts themselves as NFS servers to
create Storage (I realize that this will play havoc with the HA). We do
have an NFS server that we will be upgrading to add storage and faster
drives, but I was thinking that I may be able to use the internal storage
of the hypervisors themselves as a short term stopgap and then migrate vm's
to the upgraded NFS server later. Will that even work, or will it break
somehow?
I saw Simone gave you an answer about Gluster. Here is my DEVELOPMENT setup,
which has been running for several years like this now. I have some VMs with
uptime in the 100+ days. I am NOT doing the hosted engine since I develop stuff
for the engine and it makes no sense for me to have the hosted engine. Here is
my setup, which is one option, I will outline some other options which might
be more appropriate for what you are trying to do to:
* Development engine machine. this runs just the engine.
* 2x hosts, which both expose NFS shares for a data domain.
* Each host can see the NFS share of the other host.
* In my engine I have 2 data domains on one data center. One is the master
domain the other a secondary data domain.
Pros of this setup:
* I can use the storage on both my hosts for VMs.
* I can live migrate VMs between hosts.
* I can storage migrate VMs between data domains.
* Its cheap and easy to setup
Cons of this setup:
* If any host goes down, the entire data center goes down since both hosts
need to see all the storage. (Well technically only the VMs that are on the
storage domain that went down will die and all the VMs on the host that went
down). So this gives many points of failure for the entire thing to come
crashing down. This is fine for me since its my development environment and
nothing critical runs on it.
* Its not always clear on which data domain you will want to create a VM but
again for me its not much of an issue as this is a development environment.
Here are some other possible setups, which I am not sure will work with hosted
engine as I believe that requires some kind of shared storage. IIRC it will
need some kind of shared storage, but it will be separate from the normal data
domain. So lets assume you have hosted engine up and running and are looking
at ways of using the storage on the host.
Option 1:
Create a local storage data center and add your hosts to that data center.
Pros of this setup:
* VMs are on local storage so should have decent IO.
* If one host goes down it will not affect any of the other hosts.
* Its cheap and easy to setup.
Cons of this setup:
* No live migration
* No storage migration
* Hard to migrate to a different storage solution later.
Option 2:
This is sort of a hybrid between my setup and option 1. Create several shared
storage data centers, one for each host. Setup your NFS on each host. Add one
host to each data center and use the NFS share as the data domain.
Pros of this setup:
* VMs are pretty much on local storage, there is some overhead of the NFS
share, but it still basically local.
* If one host goes down it will not affect any of the other hosts.
Cons of this setup:
* No live migration
* No storage migration
* Hard to migrate to different storage solution later*.
Given your situation with getting some fast NFS storage at a later point, what
you can do if you take option2. Once you get the new storage, you can easily
add an import/export domain and export all your VMs to that storage. One you
have all your VMs on the import/export domain, create a new data center, add
your hosts, add your shiny new NFS as a data domain, also add the same
import/export domain, and import all the VMs into the new data domain. Note
this might also work for option 1 assuming you can attach import/export domain
to a local storage data center (I have never tried so I don't know).
In 3.5+ I think you can also simply add a new data center, add your hosts, and
import the data domains from the other data centers (after you disconnected
them from there), then storage migrate the VMs. Its more or less the same as
above just a slightly different mechanism.
Given all of this yes its possible, but not recommended for anything but
messing around with it. The recommended solution is to use shared storage
separate from your hosts. This gives you live migration and if one host goes
down it will not affect your other hosts. Of course if your storage goes down,
you are screwed regardless, but you can use whatever redundancy mechanism you
have available on the storage to mitigate that.
Alexander
Any advice for a new install would be welcome.
Thank you
Cheers,
Gervais
10:21 p.m.
On Tue, Dec 1, 2015 at 11:59 PM, Gervais de Montbrun
<gervais(a)demontbrun.com> wrote:
Hi All,
I've done a lot of reading and lots of comparison of different hypervisors
and tools and have decided that oVirt would be the best option. My initial
use case is a not too new server that I will setup to run multiple
development environments for the devs here, but I wanted something that will
scale out to production as the vm infrastructure, hardware, etc. grows here.
I'll soon have a second server to run my vm's on and want to setup a
self-hosted engine. I'm trying to find the most recent version of a how-to
on the same. I found a presentation showing off how much easier it is to do
this in oVirt 3.6 but can't find the correct docs. I seem to always end up
with 3.5 or older versions. Can someone point me at a how-to of how to best
achieve this.
Also, while I have you all here... :-)
Is it possible to setup the hypervisor hosts themselves as NFS servers to
create Storage (I realize that this will play havoc with the HA). We do have
an NFS server that we will be upgrading to add storage and faster drives,
but I was thinking that I may be able to use the internal storage of the
hypervisors themselves as a short term stopgap and then migrate vm's to the
upgraded NFS server later. Will that even work, or will it break somehow?
It is maybe not optimal, but it should work. Not sure if anyone is working
with such setting, so you may have unique issues that nobody solved yet.
Separating storage from the hypervisor will give you better performance
and reliability, and a more standard configuration that will be easier to
manage and support.
You can move the storage later to another server and export the vms.
Nir
10:17 a.m.
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On 1-12-2015 22:59, Gervais de Montbrun wrote:
Is it possible to setup the hypervisor hosts themselves as NFS
servers
to create Storage (I realize that this will play havoc with the HA).
We do have an NFS server that we will be upgrading to add storage and
faster drives, but I was thinking that I may be able to use the
internal storage of the hypervisors themselves as a short term stopgap
and then migrate vm's to the upgraded NFS server later. Will that even
work, or will it break somehow?
As Nir pointed out its possible.
I'm using such a setup at home where a NAS provides NFS storage for
hosted-engine and also iso/export/data domains for VMs. Besides that I
have an NFS server on my host for VMs which need a bit of disk
throughput, its got a nice SSD in it. Moving VM disks from the SSD
storage domain to the 'slow' storage domain on the NAS and vice versa
works fine.
Problem with these kind of setups is redundancy which is ofcourse
non-existant :-)
Regards,
Joop
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<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 1-12-2015 22:59, Gervais de Montbrun
wrote:<br>
</div>
<blockquote
cite="mid:4BCDDB0B-6C13-487B-9AE9-557BA1F42348@demontbrun.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<div class="">Is it possible to setup the hypervisor hosts
themselves as NFS servers to create Storage (I realize that this
will play havoc with the HA). We do have an NFS server that we
will be upgrading to add storage and faster drives, but I was
thinking that I may be able to use the internal storage of the
hypervisors themselves as a short term stopgap and then migrate
vm's to the upgraded NFS server later. Will that even work, or
will it break somehow?<br>
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As Nir pointed out its possible.<br>
I'm using such a setup at home where a NAS provides NFS storage for
hosted-engine and also iso/export/data domains for VMs. Besides that
I have an NFS server on my host for VMs which need a bit of disk
throughput, its got a nice SSD in it. Moving VM disks from the SSD
storage domain to the 'slow' storage domain on the NAS and vice
versa works fine.<br>
Problem with these kind of setups is redundancy which is ofcourse
non-existant :-)<br>
<br>
Regards,<br>
<br>
Joop<br>
<br>
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--------------050902070100090107070201--
10:42 a.m.
On Fri, Dec 4, 2015 at 10:17 AM, Joop <jvdwege(a)xs4all.nl> wrote:
On 1-12-2015 22:59, Gervais de Montbrun wrote:
Is it possible to setup the hypervisor hosts themselves as NFS servers to
create Storage (I realize that this will play havoc with the HA). We do
have an NFS server that we will be upgrading to add storage and faster
drives, but I was thinking that I may be able to use the internal storage
of the hypervisors themselves as a short term stopgap and then migrate vm's
to the upgraded NFS server later. Will that even work, or will it break
somehow?
As Nir pointed out its possible.
I'm using such a setup at home where a NAS provides NFS storage for
hosted-engine and also iso/export/data domains for VMs. Besides that I have
an NFS server on my host for VMs which need a bit of disk throughput, its
got a nice SSD in it. Moving VM disks from the SSD storage domain to the
'slow' storage domain on the NAS and vice versa works fine.
Problem with these kind of setups is redundancy which is ofcourse
non-existant :-)
Take care that up to and including RHEL 7 mounting exports provided by the
localhost NFS-server can lead to deadlocks so it's not a recommended choice.
A loopback iSCSI target should be more reliable on this side.
http://linux-iscsi.org/wiki/Loopback
Regards,
Joop
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8 comments
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participants (6)
-
Alan Murrell -
Alexander Wels -
Gervais de Montbrun -
Joop -
Nir Soffer -
Simone Tiraboschi