Hi Sylvain,
Not sure that's exactly what you're looking for, but you can define an
iscsi bond (iscsi multipath) using the UI and REST API:
https://www.ovirt.org/develop/release-management/features/storage/iscsi-multipath.html

Note that this is a character of the DC.

Hope it helps.


*Regards,*

*Shani Leviim*


On Wed, Apr 1, 2020 at 12:35 PM <dalma...@cines.fr> wrote:

> hi all,
> we use ovirt 4.3 on dell server r640 runing centos 7.7 and a storage bay
> Dell Compellent SCv3020 in ISCSI.
> We use two 10gb interfaces for iSCSI connection on each dell server.
> If we configure ISCSI connection directly from web IU, we can’t specify
> the two physical ethernet interface , and there are missing path . (only 4
> path on 8)
> So, on the shell of hypervisor we use this commands  for configure the
> connections :
> iscsiadm -m iface -I em1 --op=new # 1st ethernet interface
> iscsiadm -m iface -I p3p1 --op=new # 2d ethernet interface
> iscsiadm -m discovery -t sendtargets -p xx.xx.xx.xx
> iscsiadm -m node -o show
> iscsiadm -m node --login
> after this, on the web IU we can connect our LUN with all path.
>
> Also, I don’t understand how to configure multipath in the web UI . By
> defaut the configuration is in failover :
> multipath -ll :
> 36000d3100457e4000000000000000005 dm-3 COMPELNT,Compellent Vol
> size=500G features='1 queue_if_no_path' hwhandler='0' wp=rw
> `-+- policy='service-time 0' prio=1 status=active
>   |- 23:0:0:1 sdb 8:16   active ready running
>   |- 24:0:0:1 sdd 8:48   active ready running
>   |- 25:0:0:1 sdc 8:32   active ready running
>   |- 26:0:0:1 sde 8:64   active ready running
>   |- 31:0:0:1 sdf 8:80   active ready running
>   |- 32:0:0:1 sdg 8:96   active ready running
>   |- 33:0:0:1 sdh 8:112  active ready running
>   |- 34:0:0:1 sdi 8:128  active ready running
>
> I think round robind or another configuration will be more performent.
>
> So can we made this configuration , select physical interface and
> configure multipath in web UI ? for easyly maintenance and adding other
> server ?
>
> Thank you.
>
> Sylvain.
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