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Den 13 jul 2014 17:47 skrev Niklas Fondberg <niklas@vireone.com>:<br>
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> From: Karli Sjöberg <Karli.Sjoberg@slu.se><br>
> Date: Sunday 13 July 2014 14:51<br>
> To: Niklas Fondberg <niklas@vireone.com><br>
> Cc: "users@ovirt.org" <users@ovirt.org>, Karli Sjöberg <Karli.Sjoberg@slu.se><br>
> Subject: Re: [ovirt-users] fileserver as a guest oVirt<br>
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>><br>
>> Den 12 jul 2014 22:49 skrev Niklas Fondberg <niklas@vireone.com>:<br>
>> ><br>
>> ><br>
>> ><br>
>> > On 12 jul 2014, at 16:57, "Karli Sjöberg" <Karli.Sjoberg@slu.se> wrote:<br>
>> ><br>
>> >><br>
>> >> Den 12 jul 2014 15:45 skrev Niklas Fondberg <niklas@vireone.com>:<br>
>> >> ><br>
>> >> > Hi,<br>
>> >> ><br>
>> >> > I’m new to oVirt but I must say I am impressed! <br>
>> >> > I am running it on a HP DL380 with an external SAS chassi.<br>
>> >> > Linux dist is Centos 6.5 and oVirt is 3.4 running all-in-one (for now until we need to have a second host).<br>
>> >> ><br>
>> >> > Our company (www.vireone.com) deals with system architecture for many telco and media operators and is now setting up a small own datacenter for our internal tests as well as our IT infrastructure.<br>
>> >> > 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 directory with NFS + SMB (which is semi crippled on the host after oVirt installation with version 3 et.c.).<br>
>> >> ><br>
>> >> > Does anyone have an idea of how I can through oVirt (seen several solutions using virsh and kvm) letting my Zentyal Ubuntu guest have access to a host mount point or if necessary (second best) a seperate partition?<br>
>> >> ><br>
>> >> > Best regards<br>
>> >> > Niklas<br>
>> >> ><br>
>> >><br>
>> >> Why not just give the guest a thin provision virtual hard drive and expand it on a demand basis?<br>
>> >><br>
>> >> /K<br>
>> ><br>
>> > 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. <br>
>> ><br>
>> ><br>
>><br>
>> Well, going by Occam's raizor; the simplest answer is usually correct. Can't really tell what you mean by file-routines but backups would be well served by snapshots (can't get more incremental than that) and disaster recovery could be as easy as a rsync
from inside the guest to a remote machine.<br>
>><br>
>> 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 "real" setup when the AIO starts feeling crowded later on. Thinking ahead is never a bad thing, no?<br>
>><br>
>> /K<br>
><br>
> Thanks for your suggestions!<br>
> The thing also is that the performance will be very bad if we have the 25TB SAS array shared for our purposes (lots of media streaming) using a virtual disk.</p>
<p dir="ltr">Not that I'm trying to force my view of the world on you, but I get the feeling that you haven't really done any benchmarking to be able to come to any such conslusions. My advice would be to install "bonnie++" in both Host and Guest and compare
results. You'll perhaps be surprised just how good a virtual hard drive can be. And remember, it only needs to be able to handle what's coming over the network, so the network is the bottleneck here, not the disks.</p>
<p dir="ltr">/K<br>
<br>
> 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 LUN hook (http://www.ovirt.org/VDSM-Hooks/directlun, if I can figure out how to work with hooks…)<br>
> Any chance anybody has an answer for these questions?<br>
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