The scenario of manually connecting the hosted-engine host to several paths wasn't tested before, but by theory it should work.

As you said, the host should be set to global maintenance, disconnected from the single iSCSI session [1] and reconnected to the dual paths [2].
Then host re-activation.

[1] # iscsiadm -m session -u

# iscsiadm -m node -o delete

[2] # iscsiadm -m discovery -t sendtargets -p target_IP:port

# iscsiadm -m node target_name -l

On Wed, Feb 3, 2016 at 12:12 PM, gflwqs gflwqs <gflwqs@gmail.com> wrote:

So does that mean i can change it if i put the HE into global maintenance and restart it?
If that is possible then it is ok for me?

/Christian

2016-02-03 11:07 GMT+01:00 Elad Ben Aharon <ebenahar@redhat.com>:
Hi,

Deployment over more than one path is currently not supported. There is a request for it: https://bugzilla.redhat.com/show_bug.cgi?id=1193961
I can't think of a way for manually change to dual paths and keep the VM running without interruptions.

Adding Simone and Nir who might have an idea.

On Wed, Feb 3, 2016 at 10:37 AM, gflwqs gflwqs <gflwqs@gmail.com> wrote:
Hi List,

I have installed the hosted engine over iscsi but have a problem getting it to install over the multipath, even though i can see the multipath device from the host with multipath -ll.

When i get to the point in the HE installer where i should choose the disk i only see the underlying devices like sdb sdc. So if i choose one of those it results in that it will only use one of the paths!

My questions is:
- Is there a bug in the installer script or am i doing something wrong?
- I now have a running HE and would like to manually change the single path to dual, how do i accomplish this?

I am running ovirt 3.5.6.2.

Regards
Christian

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