From lists at murrell.ca Wed Jul 29 01:22:38 2015 Content-Type: multipart/mixed; boundary="===============2882083531987061726==" MIME-Version: 1.0 From: Alan Murrell To: users at ovirt.org Subject: Re: [ovirt-users] Poor guest write speeds Date: Tue, 28 Jul 2015 22:22:29 -0700 Message-ID: <55B86315.8040407@murrell.ca> In-Reply-To: CAKZ1H79inNNcaNuS7Jzfz1-tquDgvFsHhdDn2jDPLXhSeUXVfw@mail.gmail.com --===============2882083531987061726== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable This is a multi-part message in MIME format. --------------030701080601000708090203 Content-Type: text/plain; charset=3Dutf-8 Content-Transfer-Encoding: 7bit Hi Donny, On 28/07/15 06:30 PM, Donny Davis wrote: > Can you give this a try. Fire up a manager thats not hosted engine, > maybe a vm on a laptop or something. And then add that centos install > you already as a node in a datacenter that uses local storage. ... I > have a feeling you might have had some NFS related issues with your > write performance. If that is the case, then NFS tuning will be > required to get what you are looking for. I only have the one server. I could do a oVirt All-In-One install and use local storage on it. You may be right about the NFS side of things; it did occur to me to. All the other tests I did (ESXi, "vanilla" KVM) use true local storage. If it works fine with the AIO/local storage install, then at least that gives me something to look at (NFS storage) I may be able to get to this tomorrow, but it may not be until Thu or Fri that I can report on results, so please be patient :-) -Alan --------------030701080601000708090203 Content-Type: text/html; charset=3Dutf-8 Content-Transfer-Encoding: 8bit Hi Donny,

On 28/07/15 06:30 PM, Donny Davis wrote:

Can you give this a try. Fire up a manager thats not hosted engine, maybe a vm on a laptop or something. And then add that centos install you already as a node in a datacenter that uses local storage. ... I have a feeling you might have had some NFS related issues with your write performance. If that is the case, then NFS tuning will be required to get what you are looking for.

I only have the one server.=C2=A0 I could do a oVirt All-In-One install and use local storage on it.=C2=A0 You may be right about the NFS side = of things; it did occur to me to.=C2=A0 All the other tests I did (ESXi, "vanilla" KVM) use true local storage.

If it works fine with the AIO/local storage install, then at least that gives me something to look at (NFS storage)

I may be able to get to this tomorrow, but it may not be until Thu or Fri that I can report on results, so please be patient :-)

-Alan

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