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From Ignazio Cassano <ignaziocass...@gmail.com>
Subject Re: How many vms per primary storage can offer best performance?
Date Fri, 05 Jul 2013 05:35:01 GMT
Hi, I think nfs is not a good solution.
Try clvm over iscsi or fc.
Regards
Il giorno 04/lug/2013 18:26, "Conrad Geiger" <cgeiger@it1solutions.com> ha
scritto:

> I would also say that 8 spindles for 15-20 VMs is low.  You are going to
> run out of iops.
>
>
> Sent from my Verizon Wireless 4G LTE Smartphone
>
>
>
> -------- Original message --------
> From: Ahmad Emneina <aemneina@gmail.com>
> Date: 07/04/2013 9:10 AM (GMT-05:00)
> To: Cloudstack users mailing list <users@cloudstack.apache.org>
> Subject: Re: How many vms per primary storage can offer best performance?
>
>
> I would google NFS tuning and atomically test changes. Changes vary from
> the kernel level up through the switches (sizing frames) as well as
> introducing bonding. YMMV here NFS tuning is a huge part trial and error.
>
>
> On Thu, Jul 4, 2013 at 5:26 AM, WXR <1485739420@qq.com> wrote:
>
> > I use NFS share as primary storage,the NFS share is on a 8 SATA HDDs
> > RAID10 volume.
> > The network link is gigabit ethernet.The switch is dell powerconnect.
> >
> > When I just create 15-20 vm instances and start them(not run any software
> > on them),I find the disk IO performance of the vm is very low.
> > If a file copy job on a pc needs 10 minutes , the same job on the vm
> needs
> > 20minutes.
> >
> > I don't know if it is normal,and I want to know the correct configuration
> > of the primary storage,I need your suggests with enough experience.
>

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