Hello Vahric and list! Thank you for the answer! I've analyzed documentation you indicated. Although one of that be related with a Huawei product, the answer for the problem was there, exactly what reported:
If the version of OpenStack is Havana and IceHouse, add libvirt_iscsi_use_multipath = True in [default] of /etc/nova/nova.conf. If the version of OpenStack is Juno, Kilo, and Liberty, add iscsi_use_multipath = True in [libvirt] of /etc/nova/nova.conf. So, to use IBM Storwize with iSCSI multipath we need: - configure Storwize driver to manage the storage; - configure multipath on compute nodes; - add libvirt_iscsi_use_multipath = True or iscsi_use_multipath = True depending of the running version. When attaching a volume to one instance, Storwize driver will connect on storage via management interface (normally via ssh), get parameters about available iSCSI IPs and make the compute nodes run iscsiadm in a manner that connects to all of theses IPs. At this moment, running multipath -ll on the compute node that executes the virtual machine on which the volume was attached, we could see the available paths! I've created a solicitation to include these information on Storwize driver documentation. https://bugs.launchpad.net/openstack-manuals/+bug/1564442 Thank you!! :) - JLC On Wed, Mar 30, 2016 at 5:17 PM, Vahric Muhtaryan <vah...@doruk.net.tr> wrote: > Hello , > To be an example I find out 3PAR documentation which HPE newly implement > multipath with liberty and config is on pdf > http://www8.hp.com/h20195/v2/GetPDF.aspx%2F4AA5-1930ENW.pdf > I am also IBM customer but using FC but for iscsi I checked liberty > configuration reference and looks like from Grizzly its supported > But on of other ibm documentation is saying its controlled by Nova > > https://www.ibm.com/support/knowledgecenter/#!/SST55W_4.1.0/liaca/liaca_configuring_storwize_driver.html > Then I find out this > http://docs.openstack.org/liberty/config-reference/content/config-iscsi-multipath.html > , > looks like after Juno it should be configured by openstack admin in > nova.conf under libvirt section manually . > > Hope you can success > Pls inform me > Regards > VM > > From: Jorge Luiz Correa <corre...@gmail.com> > Date: Wednesday 30 March 2016 at 21:18 > To: <openstack@lists.openstack.org> > Subject: [Openstack] Help configuring multipath with IBM storwize v3700. > > Hi! I would like to get some help configuring my compute nodes to use > multipath when establishing iscsi connections with a IBM Storwize v3700 > storage. > > I have 1 controller, 1 network node and 2 compute nodes. The IBM Storwize > driver is configured on controller and volumes can be created and attached > to instances running on compute nodes. > > However, my storage has 2 nodes (canisters or controllers) and each one > has two 10G interfaces for iscsi use. So, I have four IPs configured as > iscsi at storage. But, when I attach a volume to some virtual machine, the > compute node uses the first IP of the 'primary' controller (IBM calls this > by 'config node'). > > I've read a lot of documentation but I couldn't find certainly what I need > to configure neither where I need to put these configuration. > > What I've already read is that this model of storage doesn't answer to > iscsi calls with a list of available iscsi IPs, as do some others > equipments. So, I need some way to tell nova that I have more than one IP > address available, so iscsi commands can connect using not just one IP. > > Making compute nodes connect to 2 iscsi IPs then I can use multipath. I've > already configured multipath on compute nodes but it isn't used. > > So: > > - how to configure nova to use multipath? > - how to configure nova to make more than one iscsi connection? > > I appreciate ANY help, documentation, configuration examples etc. > > Thanks! > :) > > - JLC > _______________________________________________ Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : > openstack@lists.openstack.org Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >
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