Best practices for LACP bonds on oVirt
Hello, I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager? In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO). Thanks, V.
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
Thanks, V.
Do all your network settings in ovirt-engine webadmin.
--_000_91E0EEC887094D9184F7F7B8836343AEifufrjbr_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks, Konstantin. Just to be clear enough: the first deployment would be made on classic eth = interfaces and later after the deployment of Hosted Engine I can convert th= e "ovirtmgmt" network to a LACP Bond, right? Another question: what about iSCSI Multipath on Self Hosted Engine? I've lo= oked through the net and only found this issue: https://bugzilla.redhat.com= /show_bug.cgi?id=3D1193961 Appears to be unsupported as today, but there's an workaround on the commen= ts. It's safe to deploy this way? Should I use NFS instead? Thanks, V. Sent from my iPhone On 3 Jul 2017, at 21:55, Konstantin Shalygin <k0ste@k0ste.ru<mailto:k0ste@k= 0ste.ru>> wrote: Hello, I'm deploying oVirt for the first time and a question has emerged: what is = the good practice to enable LACP on oVirt Node? Should I create 802.3ad bon= d during the oVirt Node installation in Anaconda, or it should be done in a= posterior moment inside the Hosted Engine manager? In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bo= nd for management and servers VLAN's, while eth1 and eth2 are Multipath iSC= SI disks (MPIO). Thanks, V. Do all your network settings in ovirt-engine webadmin. --_000_91E0EEC887094D9184F7F7B8836343AEifufrjbr_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> </head> <body dir=3D"auto"> <div>Thanks, Konstantin.</div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">Just to be clear enough: the first deploymen= t would be made on classic eth interfaces and later after the deployment of= Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bo= nd, right?</div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">Another question: what about iSCSI Multipath= on Self Hosted Engine? I've looked through the net and only found this iss= ue: <a href=3D"https://bugzilla.redhat.com/show_bug.cgi?id=3D1193961">= https://bugzilla.redhat.com/show_bug.cgi?id=3D1193961</a></div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">Appears to be unsupported as today, but ther= e's an workaround on the comments. It's safe to deploy this way? Should I u= se NFS instead?</div> <div id=3D"AppleMailSignature"><br> </div> <div id=3D"AppleMailSignature">Thanks,</div> <div id=3D"AppleMailSignature">V.</div> <div id=3D"AppleMailSignature"><br> Sent from my iPhone</div> <div><br> On 3 Jul 2017, at 21:55, Konstantin Shalygin <<a href=3D"mailto:k0ste@k0= ste.ru">k0ste@k0ste.ru</a>> wrote:<br> <br> </div> <blockquote type=3D"cite"> <div> <blockquote type=3D"cite"><span>Hello,</span><br> </blockquote> <blockquote type=3D"cite"><span></span><br> </blockquote> <blockquote type=3D"cite"><span>I’m deploying oVirt for the first tim= e and a question has emerged: what is the good practice to enable LACP on o= Virt Node? Should I create 802.3ad bond during the oVirt Node installation = in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?</span><br> </blockquote> <blockquote type=3D"cite"><span></span><br> </blockquote> <blockquote type=3D"cite"><span>In my deployment we have 4x GbE interfaces.= eth0 and eth1 will be a LACP bond for management and servers VLAN’s,= while eth1 and eth2 are Multipath iSCSI disks (MPIO).</span><br> </blockquote> <blockquote type=3D"cite"><span></span><br> </blockquote> <blockquote type=3D"cite"><span>Thanks,</span><br> </blockquote> <blockquote type=3D"cite"><span>V.</span><br> </blockquote> <span></span><br> <span>Do all your network settings in ovirt-engine webadmin.</span><br> </div> </blockquote> </body> </html> --_000_91E0EEC887094D9184F7F7B8836343AEifufrjbr_--
This is a multi-part message in MIME format. --------------54EEB3F003B3D7F9E5DE7D93 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Yes, I do deployment in four steps: 1. Install CentOS via iDRAC. 2. Attach vlan to 10G physdev via iproute. This is one handwork. May be replaced via DHCP management, but for now I only have 2x10G Fiber, without any DHCP. 3. Run ovirt_deploy Ansible role. 4. Attach oVirt networks after host activate. About iSCSI, NFS. I don't know anything about it. I use Ceph. On 07/04/2017 10:50 AM, Vinícius Ferrão wrote:
Thanks, Konstantin.
Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right?
Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1193961
Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead?
-- Best regards, Konstantin Shalygin --------------54EEB3F003B3D7F9E5DE7D93 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> <font face="Fira Sans">Yes, I do deployment in four steps:<br> <br> 1. Install CentOS via iDRAC.<br> 2. Attach vlan to 10G physdev via iproute. This is one handwork. May be replaced via DHCP management, but for now I only have 2x10G Fiber, without any DHCP.<br> 3. Run ovirt_deploy Ansible role.<br> 4. Attach oVirt networks after host activate.</font> <p><font face="Fira Sans">About iSCSI, NFS. I don't know anything about it. I use Ceph.<br> </font></p> <br> <div class="moz-cite-prefix">On 07/04/2017 10:50 AM, Vinícius Ferrão wrote:<br> </div> <blockquote type="cite" cite="mid:91E0EEC8-8709-4D91-84F7-F7B8836343AE@if.ufrj.br"> <div>Thanks, Konstantin.</div> <div id="AppleMailSignature"><br> </div> <div id="AppleMailSignature">Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right?</div> <div id="AppleMailSignature"><br> </div> <div id="AppleMailSignature">Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1193961" moz-do-not-send="true">https://bugzilla.redhat.com/show_bug.cgi?id=1193961</a></div> <div id="AppleMailSignature"><br> </div> <div id="AppleMailSignature">Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead?</div> </blockquote> <br> <pre class="moz-signature" cols="72">-- Best regards, Konstantin Shalygin </pre> </body> </html> --------------54EEB3F003B3D7F9E5DE7D93--
On Jul 4, 2017 7:14 AM, "Konstantin Shalygin" <k0ste@k0ste.ru> wrote: Yes, I do deployment in four steps: 1. Install CentOS via iDRAC. 2. Attach vlan to 10G physdev via iproute. This is one handwork. May be replaced via DHCP management, but for now I only have 2x10G Fiber, without any DHCP. 3. Run ovirt_deploy Ansible role. 4. Attach oVirt networks after host activate. About iSCSI, NFS. I don't know anything about it. I use Ceph. How are you using Ceph for hosted engine? Y. On 07/04/2017 10:50 AM, Vinícius Ferrão wrote: Thanks, Konstantin. Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right? Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla. redhat.com/show_bug.cgi?id=1193961 Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead? -- Best regards, Konstantin Shalygin _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
This is a multi-part message in MIME format. --------------F1E7C34262A2BE117BB9033E Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Not for hosted engine, with ovirt-engine of course. On 07/04/2017 11:27 AM, Yaniv Kaul wrote:
How are you using Ceph for hosted engine?
-- Best regards, Konstantin Shalygin --------------F1E7C34262A2BE117BB9033E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> <p><font face="Fira Sans">Not for hosted engine, with ovirt-engine of course.</font><br> </p> <br> <div class="moz-cite-prefix">On 07/04/2017 11:27 AM, Yaniv Kaul wrote:<br> </div> <blockquote type="cite" cite="mid:CAJgorsa=ditp_BLjd5yCL0xz_kJPOWGfE0BR91dMx05X4fWUuQ@mail.gmail.com"> <div dir="auto">How are you using Ceph for hosted engine? </div> </blockquote> <br> <pre class="moz-signature" cols="72">-- Best regards, Konstantin Shalygin </pre> </body> </html> --------------F1E7C34262A2BE117BB9033E--
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I don't know what is oVirt Node :) And for "generic_linux" I have 95% automation (work in progress). On 07/04/2017 11:20 AM, Vinícius Ferrão wrote:
Just abusing a little more, why you use CentOS instead of oVirt Node? What’s the reason behind this choice?
-- Best regards, Konstantin Shalygin
LOL. It’s the hypervisor appliance, just like RHVH.
On 4 Jul 2017, at 01:23, Konstantin Shalygin <k0ste@k0ste.ru> wrote:
I don't know what is oVirt Node :)
And for "generic_linux" I have 95% automation (work in progress).
On 07/04/2017 11:20 AM, Vinícius Ferrão wrote:
Just abusing a little more, why you use CentOS instead of oVirt Node? What’s the reason behind this choice?
-- Best regards, Konstantin Shalygin
Red Hat Virtualization Host (RHVH) is a minimal operating system based on Red Hat Enterprise Linux that is designed to provide a simple method for setting up a physical machine to act as a hypervisor in a Red Hat Virtualization environment. The minimal operating system contains only the packages required for the machine to act as a hypervisor, and features a Cockpit user interface for monitoring the host and performing administrative tasks.
I as Administrator self-know what packages is required for my hardware and I don't need Cockpit. So CentOS minimal is my choice. On 07/04/2017 11:36 AM, Vinícius Ferrão wrote:
It’s the hypervisor appliance, just like RHVH.
-- Best regards, Konstantin Shalygin
On Tue, Jul 4, 2017 at 5:50 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Thanks, Konstantin.
Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right?
Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla. redhat.com/show_bug.cgi?id=1193961
Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead?
It's probably not the most tested path but once you have an engine you should be able to create an iSCSI bond on your hosts from the engine. Network configuration is persisted across host reboots and so the iSCSI bond configuration. A different story is instead having ovirt-ha-agent connecting multiple IQNs or multiple targets over your SAN. This is currently not supported for the hosted-engine storage domain. See: https://bugzilla.redhat.com/show_bug.cgi?id=1149579
Thanks, V.
Sent from my iPhone
On 3 Jul 2017, at 21:55, Konstantin Shalygin <k0ste@k0ste.ru> wrote:
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
Thanks,
V.
Do all your network settings in ovirt-engine webadmin.
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On Tue, Jul 4, 2017 at 10:30 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Thanks for your input, Simone.
On 4 Jul 2017, at 05:01, Simone Tiraboschi <stirabos@redhat.com> wrote:
On Tue, Jul 4, 2017 at 5:50 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Thanks, Konstantin.
Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right?
Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla.redhat .com/show_bug.cgi?id=1193961
Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead?
It's probably not the most tested path but once you have an engine you should be able to create an iSCSI bond on your hosts from the engine. Network configuration is persisted across host reboots and so the iSCSI bond configuration.
A different story is instead having ovirt-ha-agent connecting multiple IQNs or multiple targets over your SAN. This is currently not supported for the hosted-engine storage domain. See: https://bugzilla.redhat.com/show_bug.cgi?id=1149579
Just to be clear, when we talk about bonding on iSCSI, we’re talking about iSCSI MPIO and not LACP (or something similar) on iSCSI interfaces, right?
Yes, correct.
In my case there are two different fabrics dedicated to iSCSI. They do not even transit on the same switch, so it’s plain ethernet (with fancy things, like mtu 9216 enabled and QoS).
So I think we’re talking about the unsupported feature of multiple IQN’s right?
Multiple IQNs on the host side (multiple initiators) should work trough iSCSI bonding as managed by oVirt engine: https://www.ovirt.org/documentation/admin-guide/chap-Storage/#configuring-is... Multiple IQN on your SAN are instead currently not supported by ovirt-ha-agent for the hosted-engine storage domain
Thanks once again, V.
Thanks, V.
Sent from my iPhone
On 3 Jul 2017, at 21:55, Konstantin Shalygin <k0ste@k0ste.ru> wrote:
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
Thanks,
V.
Do all your network settings in ovirt-engine webadmin.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Am 2017-07-04 um 10:01 schrieb Simone Tiraboschi:
On Tue, Jul 4, 2017 at 5:50 AM, Vinícius Ferrão <ferrao@if.ufrj.br <mailto:ferrao@if.ufrj.br>> wrote:
Thanks, Konstantin.
Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right?
Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1193961 <https://bugzilla.redhat.com/show_bug.cgi?id=1193961>
Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead?
It's probably not the most tested path but once you have an engine you should be able to create an iSCSI bond on your hosts from the engine. Network configuration is persisted across host reboots and so the iSCSI bond configuration.
A different story is instead having ovirt-ha-agent connecting multiple IQNs or multiple targets over your SAN. This is currently not supported for the hosted-engine storage domain. See: https://bugzilla.redhat.com/show_bug.cgi?id=1149579
Hi Simone, i think my post to this list titled "iSCSI multipathing setup troubles" just recently is about the exact same problem, except i'm not talking about the hosted-engine storage domain. i would like to configure _any_ iSCSI storage domain the way you describe it in https://bugzilla.redhat.com/show_bug.cgi?id=1149579#c1. i would like to do so using the oVirt "iSCSI Multipathing" GUI after everything else is setup. i can't find a way to do this. is this now possible? i think the iSCSI Multipathing documentation could be improved by describing an example IP setup for this. thanks a lot matthias
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On Wed, Jul 5, 2017 at 7:12 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Adding another question to what Matthias has said.
I also noted that oVirt (and RHV) documentation does not mention the supported block size on iSCSI domains.
RHV: https://access.redhat.com/documentation/en-us/red_ hat_virtualization/4.0/html/administration_guide/chap-storage oVirt: http://www.ovirt.org/documentation/admin-guide/chap-Storage/
I’m interested on 4K blocks over iSCSI, but this isn’t really widely supported. The question is: oVirt supports this? Or should we stay with the default 512 bytes of block size?
It does not. Y.
Thanks, V.
On 4 Jul 2017, at 09:10, Matthias Leopold <matthias.leopold@meduniwien. ac.at> wrote:
Am 2017-07-04 um 10:01 schrieb Simone Tiraboschi:
On Tue, Jul 4, 2017 at 5:50 AM, Vinícius Ferrão <ferrao@if.ufrj.br < mailto:ferrao@if.ufrj.br <ferrao@if.ufrj.br>>> wrote: Thanks, Konstantin. Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right? Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1193961 <https://bugzilla.redhat.com/show_bug.cgi?id=1193961> Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead? It's probably not the most tested path but once you have an engine you should be able to create an iSCSI bond on your hosts from the engine. Network configuration is persisted across host reboots and so the iSCSI bond configuration. A different story is instead having ovirt-ha-agent connecting multiple IQNs or multiple targets over your SAN. This is currently not supported for the hosted-engine storage domain. See: https://bugzilla.redhat.com/show_bug.cgi?id=1149579
Hi Simone,
i think my post to this list titled "iSCSI multipathing setup troubles" just recently is about the exact same problem, except i'm not talking about the hosted-engine storage domain. i would like to configure _any_ iSCSI storage domain the way you describe it in https://bugzilla.redhat.com/ show_bug.cgi?id=1149579#c1. i would like to do so using the oVirt "iSCSI Multipathing" GUI after everything else is setup. i can't find a way to do this. is this now possible? i think the iSCSI Multipathing documentation could be improved by describing an example IP setup for this.
thanks a lot matthias
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On Wed, Jul 5, 2017 at 11:54 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
On 5 Jul 2017, at 05:35, Yaniv Kaul <ykaul@redhat.com> wrote:
On Wed, Jul 5, 2017 at 7:12 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Adding another question to what Matthias has said.
I also noted that oVirt (and RHV) documentation does not mention the supported block size on iSCSI domains.
RHV: https://access.redhat.com/documentation/en-us/red_hat_ virtualization/4.0/html/administration_guide/chap-storage oVirt: http://www.ovirt.org/documentation/admin-guide/chap-Storage/
I’m interested on 4K blocks over iSCSI, but this isn’t really widely supported. The question is: oVirt supports this? Or should we stay with the default 512 bytes of block size?
It does not. Y.
Discovered this with the hard way, the system is able to detect it as 4K LUN, but ovirt-hosted-engine-setup gets confused:
[2] 36589cfc00000071cbf2f2ef314a6212c 1600GiB FreeNAS iSCSI Disk status: free, paths: 4 active
[3] 36589cfc00000043589992bce09176478 200GiB FreeNAS iSCSI Disk status: free, paths: 4 active
[4] 36589cfc000000992f7abf38c11295bb6 400GiB FreeNAS iSCSI Disk status: free, paths: 4 active
[2] is 4k [3] is 512bytes [4] is 1k (just to prove the point)
On the system it’s appears to be OK:
Disk /dev/mapper/36589cfc00000071cbf2f2ef314a6212c: 214.7 GB, 214748364800 bytes, 52428800 sectors Units = sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 16384 bytes I/O size (minimum/optimal): 16384 bytes / 1048576 bytes
Disk /dev/mapper/36589cfc00000043589992bce09176478: 214.7 GB, 214748364800 bytes, 419430400 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 16384 bytes I/O size (minimum/optimal): 16384 bytes / 1048576 bytes
But whatever, just reporting back to the list. It’s a good ideia to have a note about it on the documentation.
Indeed. Can you file a bug or send a patch to upstream docs? Y.
V.
Thanks, V.
On 4 Jul 2017, at 09:10, Matthias Leopold <matthias.leopold@meduniwien.a c.at> wrote:
Am 2017-07-04 um 10:01 schrieb Simone Tiraboschi:
On Tue, Jul 4, 2017 at 5:50 AM, Vinícius Ferrão <ferrao@if.ufrj.br < mailto:ferrao@if.ufrj.br <ferrao@if.ufrj.br>>> wrote: Thanks, Konstantin. Just to be clear enough: the first deployment would be made on classic eth interfaces and later after the deployment of Hosted Engine I can convert the "ovirtmgmt" network to a LACP Bond, right? Another question: what about iSCSI Multipath on Self Hosted Engine? I've looked through the net and only found this issue: https://bugzilla.redhat.com/show_bug.cgi?id=1193961 <https://bugzilla.redhat.com/show_bug.cgi?id=1193961> Appears to be unsupported as today, but there's an workaround on the comments. It's safe to deploy this way? Should I use NFS instead? It's probably not the most tested path but once you have an engine you should be able to create an iSCSI bond on your hosts from the engine. Network configuration is persisted across host reboots and so the iSCSI bond configuration. A different story is instead having ovirt-ha-agent connecting multiple IQNs or multiple targets over your SAN. This is currently not supported for the hosted-engine storage domain. See: https://bugzilla.redhat.com/show_bug.cgi?id=1149579
Hi Simone,
i think my post to this list titled "iSCSI multipathing setup troubles" just recently is about the exact same problem, except i'm not talking about the hosted-engine storage domain. i would like to configure _any_ iSCSI storage domain the way you describe it in https://bugzilla.redhat.com/sh ow_bug.cgi?id=1149579#c1. i would like to do so using the oVirt "iSCSI Multipathing" GUI after everything else is setup. i can't find a way to do this. is this now possible? i think the iSCSI Multipathing documentation could be improved by describing an example IP setup for this.
thanks a lot matthias
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On Tue, Jul 4, 2017 at 3:51 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
Adding Simone for this, but I think that hosted-engine --deploy does not know to create bonds, so you better do this beforehand. It does know to recognize bonds and their slaves, and so will not let you configure the ovirtmgmt bridge on one of the slave nics of a bond.
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
You probably meant eth2 and eth3 for the latter bond. This is probably more a matter of personal preference than a result of a scientific examination, but I personally prefer, assuming that eth0 and eth1 are managed by a single PCI component and eth2 and eth3 by another one, and especially if they are different, and using different kernel modules, to have one bond on eth0 and eth2, and another on eth1 and eth3. This way, presumably, if some (hardware or software) bug hits one of the PCI devices, both bonds hopefully keep working. Just my two cents,
Thanks, V.
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-- Didi
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On Tue, Jul 4, 2017 at 7:49 AM, Yedidyah Bar David <didi@redhat.com> wrote:
On Tue, Jul 4, 2017 at 3:51 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
Adding Simone for this, but I think that hosted-engine --deploy does not know to create bonds, so you better do this beforehand. It does know to recognize bonds and their slaves, and so will not let you configure the ovirtmgmt bridge on one of the slave nics of a bond.
Yes, exactly.
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP
bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
You probably meant eth2 and eth3 for the latter bond.
This is probably more a matter of personal preference than a result of a scientific examination, but I personally prefer, assuming that eth0 and eth1 are managed by a single PCI component and eth2 and eth3 by another one, and especially if they are different, and using different kernel modules, to have one bond on eth0 and eth2, and another on eth1 and eth3. This way, presumably, if some (hardware or software) bug hits one of the PCI devices, both bonds hopefully keep working.
Just my two cents,
Thanks, V.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Didi
On 4 Jul 2017, at 02:49, Yedidyah Bar David <didi@redhat.com> wrote:
On Tue, Jul 4, 2017 at 3:51 AM, Vinícius Ferrão <ferrao@if.ufrj.br> wrote:
Hello,
I’m deploying oVirt for the first time and a question has emerged: what is the good practice to enable LACP on oVirt Node? Should I create 802.3ad bond during the oVirt Node installation in Anaconda, or it should be done in a posterior moment inside the Hosted Engine manager?
Adding Simone for this, but I think that hosted-engine --deploy does not know to create bonds, so you better do this beforehand. It does know to recognize bonds and their slaves, and so will not let you configure the ovirtmgmt bridge on one of the slave nics of a bond.
In my deployment we have 4x GbE interfaces. eth0 and eth1 will be a LACP bond for management and servers VLAN’s, while eth1 and eth2 are Multipath iSCSI disks (MPIO).
You probably meant eth2 and eth3 for the latter bond.
This is probably more a matter of personal preference than a result of a scientific examination, but I personally prefer, assuming that eth0 and eth1 are managed by a single PCI component and eth2 and eth3 by another one, and especially if they are different, and using different kernel modules, to have one bond on eth0 and eth2, and another on eth1 and eth3. This way, presumably, if some (hardware or software) bug hits one of the PCI devices, both bonds hopefully keep working.
It’s one single card with 4 interfaces. It came onboard on the IBM System x3550 M4 servers that I’m using and they are Intel based, don’t remember exactly which chipset. Anyway this is interesting, I really avoid mixing different controllers on bonding to keep things stable, but you’ve a point.
Just my two cents,
Thanks, V.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Didi
участники (7)
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Konstantin Shalygin -
Matthias Leopold -
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Simone Tiraboschi -
Vinícius Ferrão -
Yaniv Kaul -
Yedidyah Bar David