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[Openstack] iSCSI multipath


Ramon,

It is volume_driver=cinder.volume.drivers.dell_emc.sc.storagecenter_iscsi.SCISCSIDriver these days.

The volume is mapped to all paths whether they will be used or not.

-----Original Message-----
From: Ramon Orru [mailto:ramon.orru at immobiliare.it] 
Sent: Friday, March 23, 2018 9:07 AM
To: Kanevsky, Arkady <Arkady_Kanevsky at DELL.com>; openstack at lists.openstack.org
Subject: Re: [Openstack] iSCSI multipath

Hi Arkady,

is Dell SC driver (connected to a SC9000), to be clear, we have:

volume_driver=cinder.volume.drivers.dell.dell_storagecenter_iscsi.DellStorageCenterISCSIDriver

In our cinder.conf

Ramon


Il 23/03/18 14:52, Arkady.Kanevsky at dell.com ha scritto:
> Ramon,
> Which DellEMC driver is that? VNX?
>
> -----Original Message-----
> From: Ramon Orru [mailto:ramon.orru at immobiliare.it]
> Sent: Friday, March 23, 2018 6:35 AM
> To: openstack at lists.openstack.org
> Subject: [Openstack] iSCSI multipath
>
> Hi everyone,
>
> I'm using delliscsi driver as cinder backend in a new queens cluster.
>
> Checking all nodes connections to storage layer, I figured out that after discovering and logging in (successfully) on every path, all nodes set up only 4 paths on 8 totals.
>
> Multipath on these 4 paths is working well and Im not experiencing any issue, I just wonder why only 4 paths are used... am I ignoring some configuration or default behaviour?
>
> Thanks in advance
>
> Ramon
>
>
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