Re: [Xen-API] switches for XCP in High Avaibility

[George Shuklin <george.shuklin@xxxxxxxxx>]

Is your iscsi target ready for highload? Check latency log during 
migration process.
There is a certain timeout for iscsi operations. If target could not 
serve data in timed manner, this cause errors.
On 18.07.2013 11:42, Joseph-Andre Guaragna wrote:
> Hi,
>
> We came accros some network issues on our infrastructure when we
> implemented a two node XCP with an ISCI target. We were using standard
> switches (dlink), and got into troulble when our VMs (3) migrate from
> one XCP to the other. The vms after a while were filling the XCP log
> with I/O errors.
>
> I wonder if any of you encountered this problems. A network told me to
> increase mtu to 9k (jumbo frames) in order to reduce network traffic
> and activate some kind of storm braodcast limitation( not stp ). If
> somebody came accrossed this kind of problems, didi this this kind of
> solutions solve their troubles of it was something else.
>
>
>   I am probably to vague in my description, and can give anymore
> detailled on our situation. I am stuck for a week now, woth a problem
> arriving randomly (hevay load troublen, standard flawless).
>
>
> Thanks for your help, Joseph
>
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