[ovirt-users] oVirt 3.5.0 Beta is now available for testing

[Boyan Tabakov]

Hello Gary and Nir,

On Sat Jul  5 23:22:13 2014, Nir Soffer wrote:
> ----- Original Message -----
>> From: "Gary Lloyd" <g.lloyd at keele.ac.uk>
>> To: users at ovirt.org
>> Sent: Tuesday, July 1, 2014 4:56:18 PM
>> Subject: Re: [ovirt-users] oVirt 3.5.0 Beta is now available for testing
>>
>> Hi
>>
>> I was just wondering how multipath iscsi is handled in 3.5. In 3.4 there is a
>> button on the web interface under the data center tab that could be used to
>> configure multipathing for storage domains but not direct luns.
>> This seems to be missing in 3.5 Beta from what i can tell.
>
> If this is not available in 3.4, it will also not be in 3.5 - nobody worked
> on such feature in 3.5.
>
>> We are particularly interested if multipathing will work with direct lun, as
>> we have to keep bodging custom changes into the vdsm python with each new
>> version. (We currently use EqualLogic).
>
> The best way to avoid customizing vdsm is to get your patches merged upstream.
>
> Do you want to describe what are you trying to do, and how do you modify
> vdsm?
>

I've had similar issues with Equallogic, as Gary has described earlier 
here: 
https://sites.google.com/a/keele.ac.uk/partlycloudy/ovirt/gettingovirttoworkwithdellequallogic.

I've used his patch as a baseline (thanks for the original effort, 
Gary!) with some minor fixes/additions and the code can be found here: 
https://github.com/futurice/vdsm/tree/equallogic-multiple-iscsi-ifaces

The main issue seems to be that VDSM didn't work properly when multiple 
network interfaces are used to connect to the iSCSI storage, as is the 
situation with our Equallogic installation. The patch is currently 
against vdsm version 4.13.2 and we've been using it as well with 
version 4.13.3.

Nir, feel free to comment. I am not sure if this patch is ready for 
upstream yet, but hopefully it illustrates some issues that may need 
solving.

Best regards,
Boyan Tabakov

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