Hi,

 since several days i try to install the hosted engine initially to an iscsi multipath device without success.

Some information on the environment:

- Version 4.3.3

- using two 10gbe interfaces as single bond for the ovirtmgmt interface 

- using two 10gbe storage interfaces on each hypervisor for iscsi storage

-- each storage interface is configured without any bonding, etc

-- each storage interface lives in a separate vlan were also the iscsi Portals/target are available, the iscsi portals have 4x10ge interfaces each, (2 in vlan xx and 2 interfaces in vlan yy )

-- so; each storage interface is connected to two iscsi Portals via 4 interfaces 

The documentation here is for me unclear:

https://ovirt.org/documentation/self-hosted/chap-Deploying_Self-Hosted_Engine.html

>Note: To specify more than one iSCSI target, you must enable multipathing before deploying the self-hosted engine. There is also a Multipath >Helper tool that generates a script to install and configure multipath with different options.

This indicates for me that it should be possbile to install the HE directly on the /dev/mapper/mpath device which is availibale when I have prepared the host accordingly before installing the HE (log in to multiple iscsi targets, create proper multipath,conf, etc) - right ?

I login to the two iscsi portals and get in sum 8 pathes, 4 from each interface and iscsi target.

Basically I have then the mpath device on the hypervisor available and i can  mount the mpath device and put data on it.

In the cockpit interface the mount can also be activated and is recognized correctly.

multipathd -ll and lsblk looks good. Everything seems to be fine.

But when I run the "hosted-engine" --deploy, the last option while running the assistant is to enter the iscsi data.

So, basically i just want to define my mpath device - when entering the data (ip, port)for the iscsi Portal I can see the 4 pathes of the single hosted Engine target,

and when i choose the path where the "lun" is finally available it fails. I think in general this option is not that what i want to have 

here for using the multipath device.

I' m lost - what is the usual way to install the HE on a multipath device ?

Do i have to change the configuration of the storage interfaces or the iscsi network design?

Did I missed something obvious ?

Can I put in my multipath data into the answerfile to get rid of the last step of the assistant ?

Can I use the related ansible role for specify the Mpath device which is available when activating the multipath service ?

Is it not possible in general ?? :

https://bugzilla.redhat.com/show_bug.cgi?id=1193961

Sorry in advance for the long mail .... 1!^^

br,

michael

Sent from a mobile device 

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