[ovirt-users] iSCSI Multipath issues

Tue Jul 25 15:08:38 UTC 2017

Hello Maor,

Thanks for answering and looking deeper in this case. You’re welcome to connect to my machine since it’s reachable over the internet. I’ll be opening a ticket in moments. Just to feed an update here:

I’ve done what you asked, but since I’m running Self Hosted Engine, I lost the connection to HE, here’s the CLI:

Last login: Thu Jul 20 02:43:50 2017 from 172.31.2.3

  node status: OK
  See `nodectl check` for more information

Admin Console: https://192.168.11.3:9090/ or https://192.168.12.3:9090/ or https://146.164.37.103:9090/

[root at ovirt3 ~]# iscsiadm -m session -u
Logging out of session [sid: 1, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-he, portal: 192.168.12.14,3260]
Logging out of session [sid: 4, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.12.14,3260]
Logging out of session [sid: 7, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.12.14,3260]
Logging out of session [sid: 5, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.11.14,3260]
Logging out of session [sid: 6, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.11.14,3260]
Logout of [sid: 1, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-he, portal: 192.168.12.14,3260] successful.
Logout of [sid: 4, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.12.14,3260] successful.
Logout of [sid: 7, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.12.14,3260] successful.
Logout of [sid: 5, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.11.14,3260] successful.
Logout of [sid: 6, target: iqn.2017-07.br.ufrj.if.cc.storage.ctl:ovirt-mpio, portal: 192.168.11.14,3260] successful.
[root at ovirt3 ~]# service iscsid stop
Redirecting to /bin/systemctl stop  iscsid.service
Warning: Stopping iscsid.service, but it can still be activated by:
  iscsid.socket

[root at ovirt3 ~]# mv /var/lib/iscsi/ifaces/* /tmp/ifaces

[root at ovirt3 ~]# service iscsid start
Redirecting to /bin/systemctl start  iscsid.service

And finally:

[root at ovirt3 ~]# hosted-engine --vm-status
.
.
.

It just hangs.

Thanks,
V.

> On 25 Jul 2017, at 05:54, Maor Lipchuk <mlipchuk at redhat.com> wrote:
> 
> Hi Vinícius,
> 
> I was trying to reproduce your scenario and also encountered this
> issue, so please disregard my last comment, can you please open a bug
> on that so we can investigate it properly
> 
> Thanks,
> Maor
> 
> 
> On Tue, Jul 25, 2017 at 11:26 AM, Maor Lipchuk <mlipchuk at redhat.com> wrote:
>> Hi Vinícius,
>> 
>> For some reason it looks like your networks are both connected to the same IPs.
>> 
>> based on the  VDSM logs:
>>      u'connectionParams':[
>>         {
>>            u'netIfaceName':u'eno3.11',
>>            u'connection':u'192.168.11.14',
>>         },
>>         {
>>            u'netIfaceName':u'eno3.11',
>>            u'connection':u'192.168.12.14',
>>         }
>>            u'netIfaceName':u'eno4.12',
>>            u'connection':u'192.168.11.14',
>>         },
>>         {
>>            u'netIfaceName':u'eno4.12',
>>            u'connection':u'192.168.12.14',
>>         }
>>      ],
>> 
>> Can you try to reconnect to the iSCSI storage domain after
>> re-initializing your iscsiadm on your host.
>> 
>> 1. Move your iSCSI storage domain to maintenance in oVirt by deactivating it
>> 
>> 2. In your VDSM host, log out from your iscsi open sessions which are
>> related to this storage domain
>> if that is your only iSCSI storage domain log out from all the sessions:
>>   "iscsiadm -m session -u"
>> 
>> 3. Stop the iscsid service:
>>   "service iscsid stop"
>> 
>> 4. Move your network interfaces configured in the iscsiadm to a
>> temporary folder:
>>    mv /var/lib/iscsi/ifaces/* /tmp/ifaces
>> 
>> 5. Start the iscsid service
>>   "service iscsid start"
>> 
>> Regards,
>> Maor and Benny
>> 
>> On Wed, Jul 19, 2017 at 1:01 PM, Uwe Laverenz <uwe at laverenz.de> wrote:
>>> Hi,
>>> 
>>> 
>>> Am 19.07.2017 um 04:52 schrieb Vinícius Ferrão:
>>> 
>>>> I’m joining the crowd with iSCSI Multipath issues on oVirt here. I’m
>>>> trying to enable the feature without success too.
>>>> 
>>>> Here’s what I’ve done, step-by-step.
>>>> 
>>>> 1. Installed oVirt Node 4.1.3 with the following network settings:
>>>> 
>>>> eno1 and eno2 on a 802.3ad (LACP) Bond, creating a bond0 interface.
>>>> eno3 with 9216 MTU.
>>>> eno4 with 9216 MTU.
>>>> vlan11 on eno3 with 9216 MTU and fixed IP addresses.
>>>> vlan12 on eno4 with 9216 MTU and fixed IP addresses.
>>>> 
>>>> eno3 and eno4 are my iSCSI MPIO Interfaces, completelly segregated, on
>>>> different switches.
>>> 
>>> 
>>> This is the point: the OVirt implementation of iSCSI-Bonding assumes that
>>> all network interfaces in the bond can connect/reach all targets, including
>>> those in the other net(s). The fact that you use separate, isolated networks
>>> means that this is not the case in your setup (and not in mine).
>>> 
>>> I am not sure if this is a bug, a design flaw or a feature, but as a result
>>> of this OVirt's iSCSI-Bonding does not work for us.
>>> 
>>> Please see my mail from yesterday for a workaround.
>>> 
>>> cu,
>>> Uwe
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users