[ovirt-users] Some tests results: lustrefs over nfs on VM

[Yaniv Kaul]

On Sun, Nov 19, 2017 at 7:08 PM, Arman Khalatyan <arm2arm at gmail.com> wrote:

> Hi, in our environment we got pretty good io performance on VM, with
> following configuration:
> lustrebox: /lust mounted on "GATEWAY" over IB
> GATEWAY: export /lust as nfs4 on 10G interface
> VM(test.vm): import as NFS over 10G interface
>
> [root at test.vm <root at gans.vm> ~]# dd  if=/dev/zero bs=128K count=100000
>

Without oflag=direct, you are hitting (somewhat) the cache.


>
> of=/test/tmp/test.tmp
> 100000+0 records in
> 100000+0 records out
> 13107200000 <(310)%20720-0000> bytes (13 GB) copied, 20.8402 s, 629 MB/s
> looks promising for the future deployments.
>

Very - what's the backend storage?


>
> only one problem remains that on heavy io I get some wornings that the vm
> network is saturated, are there way to configure the bandwidth limits to
> 10G for the VM Interface??
>

Yes, but you really need a dedicated storage interface, no?
Y.


>
>
> thank you beforehand,
> Arman.
>
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