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Hello,
just add my 2ct: I did a lot of bench marking for our SAN (FC LUN's). I
also need file servers for our SMB Clients.
I recommend using Direct Attached LUNs for your purpose and attach them
to the VMs as VirtIO-SCSI disks. You can even added them as shareable to
oVirt if you deploy some kind of SAN file system (we use Quantum's
StorNext).
Bottom line, the implementation of VirtIO-SCSI is so well done and
support in oVirt is great. I cound not see any bottlenecks in the
visualization. For the foreseeable future I will not deploy bare metal
file Servers again.
HTH,
On So, 2014-07-13 at 15:47 +0000, Niklas Fondberg wrote:
=20
From: Karli Sj=C3=B6berg <Karli.Sjoberg@slu.se<mailto:Karli.Sjoberg@slu.s=
e>>
Date: Sunday 13 July 2014 14:51
To: Niklas Fondberg <niklas@vireone.com<mailto:niklas@vireone.com>>
Cc: "users@ovirt.org<mailto:users@ovirt.org>"
<users@ovirt.org<mailto:use=
rs(a)ovirt.org>>, Karli Sj=C3=B6berg
<Karli.Sjoberg@slu.se<mailto:Karli.Sjobe=
rg(a)slu.se>>
Subject: Re: [ovirt-users] fileserver as a guest oVirt
=20
=20
Den 12 jul 2014 22:49 skrev Niklas Fondberg <niklas@vireone.com<mailto:ni=
klas(a)vireone.com>>:
>
>
>
> On 12 jul 2014, at 16:57, "Karli Sj=C3=B6berg"
<Karli.Sjoberg(a)slu.se<ma=
ilto:Karli.Sjoberg@slu.se>> wrote:
>
>>
>> Den 12 jul 2014 15:45 skrev Niklas Fondberg <niklas(a)vireone.com<mailto=
:niklas@vireone.com>>:
>> >
>> > Hi,
>> >
>> > I'm new to oVirt but I must say I am impressed!
>> > I am running it on a HP DL380 with an external SAS chassi.
>> > Linux dist is Centos 6.5 and oVirt is 3.4 running all-in-one (for no=
w until we need to have a second host).
>> >
>> > Our company (
www.vireone.com) deals with system architecture for man=
y telco and media operators and is now setting up a small own datacenter fo=
r our internal tests as well as our IT infrastructure.
>> > We are in the process of installing Zentyal for the SMB
purposes on =
a guest and it would be great to have that guest also serving a fs
path dir=
ectory with NFS + SMB (which is semi crippled on the host after oVirt insta=
llation with version 3 et.c.).
>> >
>> > Does anyone have an idea of how I can through oVirt (seen several so=
lutions using virsh and kvm) letting my Zentyal Ubuntu guest have access to=
a host mount point or if necessary (second best) a seperate partition?
>> >
>> > Best regards
>> > Niklas
>> >
>>
>> Why not just give the guest a thin provision virtual hard drive and ex=
pand it on a demand basis?
>>
>> /K
>
> Thanks for the advise but this would not suite us I'm afraid. It would =
be difficult wrt incremental backups as well as host machine file-routines.
>
>
=20
Well, going by Occam's raizor; the simplest answer is usually correct. Ca=
n't really tell what you mean by file-routines but backups would be well se=
rved by snapshots (can't get more incremental than that) and disaster recov=
ery could be as easy as a rsync from inside the guest to a remote machine.
=20
The biggest pros here is the ease of being able to setup an export domain=
,
attach, export the VM, detach domain, and then attach and import to a "re=
al" setup when the AIO starts feeling crowded later on. Thinking ahead is n=
ever a bad thing, no?
=20
/K
=20
Thanks for your suggestions!
The thing also is that the performance will be very bad if we have the 25=
TB SAS
array shared for our purposes (lots of media streaming) using a virt=
ual disk.
What I am after (after more reading) is support for virtio-9p-pci
(http:/=
/www.linux-kvm.org/page/9p_virtio) using oVirt. Alternative is the Direct
L=
UN hook (
http://www.ovirt.org/VDSM-Hooks/directlun, if I can figure out how=
to work with hooks...)
Any chance anybody has an answer for these questions?
=20
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--=20
Daniel Helgenberger=20
m box bewegtbild GmbH=20
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ACKERSTR. 19=20
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Handeslregister: Amtsgericht Charlottenburg / HRB 112767=20
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