[ovirt-users] Re: iSCSI Multipath/multiple gateways
On Tue, 2019-09-03 at 17:27 +0200, Matthias Leopold wrote: > - multipath configuration on hypervisor hosts is then automatically > set > up without further intervention. be sure to add the multipath.conf > snippets from > https://docs.ceph.com/docs/master/rbd/iscsi-initiator-linux/ to your > hypervisor hosts, so multipathd works correctly (I originally forgot > to > do this...) Thanks for your response - adding those multipath snippets did help me setting up the multipath when I manually login, but as far as I can tell I have missed something with the login for the hosted engine deployment, such that on a reboot of a hypervisor it doesn't seem to discover the aditional hosts unless I do a manual login with: iscsiadm -m node -T -l I'm wonder if I need something additional in /etc/ovirt-hosted- engine/hosted-engine.conf to trigger this. cheers, Dan The Networking People (TNP) Limited. Registered office: Network House, Caton Rd, Lancaster, LA1 3PE. Registered in England & Wales with company number: 07667393 This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/QISPU7UTJWA6DJI52UCYOOPMGRI7LKDI/
[ovirt-users] Re: iSCSI Multipath/multiple gateways
Am 03.09.19 um 15:06 schrieb dan.poltaw...@tnp.net.uk: My iSCSI target (ceph-based) has multiple gateways, I’d like to ensure my hosted storage is aware of these such that each gateway can be rebooted for maintance without impacting service. What is the appropriate way to configure this so that each host knows of the multipath configuration? I do not have multiple network paths, just multiple gateways on the same network, so I think the multipath UI tool isn’t the way to do this. Any help/docs pointers appreciated. Regards, Dan Hi, I'm also planning to use a 2 node Ceph iSCSI gateway with oVirt. Right now I only connected it to my DEV oVirt environment, but everything works as expected (finally...), so I might be moving it to PROD soon. My circumstances and findings: - I'm only using it for customer VM storage, I don't have a hosted engine - my 2 Ceph iSCSI gateway nodes are also on the same network (network connection redundancy is through LACP bonds for them) - oVirt storage domain setup automatically finds both gateways when you "discover" one of them, you must log into both - multipath configuration on hypervisor hosts is then automatically set up without further intervention. be sure to add the multipath.conf snippets from https://docs.ceph.com/docs/master/rbd/iscsi-initiator-linux/ to your hypervisor hosts, so multipathd works correctly (I originally forgot to do this...) - what is called "ISCSI Multipathing" in oVirt on DC level only creates iscsiadm "ifaces" (see man iscsiadm), which are not strictly necessary IMHO, but are of use in special networking situations. the logical networks you use there must not be "required" in Cluster "Logical networks" setup I hope this helps Matthias ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/7I4W3RKKJAEDJ7GGVQTJZQDR65F6EUCW/
