Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Chris Adams
Once upon a time, James Michels said: > I guess you mean the 'iSCSI multipath' sub-tab under the 'Datacenters' tab. > There you can assign one or more networks to a iSCSI backend. In my opinion > you cannot have more than one interface within the same network

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Chris Adams
Once upon a time, Yaniv Kaul said: > BTW, having two IPs on a single subnet is not a great idea - it usually > mean you have a SPOF somewhere (the switch perhaps?). Two NICs on the server, two NICs on the iSCSI target, each with an IP per NIC, and connected to two switches in

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Yaniv Kaul
On Thu, Aug 4, 2016 at 7:27 PM, Chris Adams wrote: > Once upon a time, James Michels said: > > Correct me if I'm wrong but I think Dan meant target's IPs. So if you > have > > a SAN backend with two IP addresses, you first discover LUNs from

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread James Michels
I guess you mean the 'iSCSI multipath' sub-tab under the 'Datacenters' tab. There you can assign one or more networks to a iSCSI backend. In my opinion you cannot have more than one interface within the same network segment to do multipath, as you would have connectivity issues (not sure if ovirt

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Chris Adams
Once upon a time, James Michels said: > Correct me if I'm wrong but I think Dan meant target's IPs. So if you have > a SAN backend with two IP addresses, you first discover LUNs from first IP > address, then discover LUNs from the second IP address, and so on...

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread James Michels
Hello Chris, Correct me if I'm wrong but I think Dan meant target's IPs. So if you have a SAN backend with two IP addresses, you first discover LUNs from first IP address, then discover LUNs from the second IP address, and so on... once you have them all, you just check them and click on "OK" so

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Chris Adams
Once upon a time, Dan Yasny said: > Normally you > 1. enter the IP > 2. click discover > 3. login to whatever was found > 4. enter another IP instead of the first > 5. goto 2 How do you give the oVirt server two IPs (in the same subnet) though? -- Chris Adams

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Dan Yasny
On Thu, Aug 4, 2016 at 10:24 AM, Tadas wrote: > Multipath is more a SAN thing, - not a tcp/ip. > Not when it comes to iSCSI > You should use something like LACP group on two (or more) of your network > interfaces. > Absolutely not. It is always better to let multipath deal

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Tadas
Multipath is more a SAN thing, - not a tcp/ip. You should use something like LACP group on two (or more) of your network interfaces. Also you will have to configure your switch accordingly. You will not have to worry about second ip. LACP bonded interface will use one IP, but will fail-over to

Re: [ovirt-users] Multipath iSCSI with several IPs

2016-08-04 Thread Dan Yasny
Normally you 1. enter the IP 2. click discover 3. login to whatever was found 4. enter another IP instead of the first 5. goto 2 On Thu, Aug 4, 2016 at 10:13 AM, James Michels < karma.sometimes.hu...@gmail.com> wrote: > Hello, > > I want to add an iSCSI based storage domain. For that I add a