[ovirt-users] iscsi failover MD3820i

[Marcin Kruk]

How to verify this?
In the RHEM GUI storage -> <storage_name> -> Manage domain  I can see all
fourt target names,
but mabye there is only present state and I shoud verify something else in
the database or wherever?

Where is the info about iSCSI hosted-engine storage target IP,
about other storages information is in the table engine.storage_server_
connections.
I presume that information about iSCSI storage target IP can not be in the
the database due to "chicken or the egg" dillema.

2017-03-07 22:50 GMT+01:00 Dan Yasny <dyasny at gmail.com>:

> "*Important:* If more than one path access is required, ensure to
> discover and log in to the target through all the required paths. Modifying
> a storage domain to add additional paths is currently not supported."
>
> This is from the oVirt admin guide, did you discover and login to all the
> MD3xxxi controllers/portals when you were setting the storage domain up?
>
> On Tue, Mar 7, 2017 at 4:43 PM, Marcin Kruk <askifyouneed at gmail.com>
> wrote:
>
>> Hello I have got Dell MD3820i and four interfaces which was connected to
>> the hostst via switches.
>>
>> But there is only one IP which I can set during the configuration of
>> iSCSI RHV storage.
>> Everything has been fine until I pluged off cable from the storage NIC
>> interface with IP configured in the RHV iSCSI section.
>>
>> Now VDSMD got problem because it tries to connect via iscsiadm with exact
>> IP and does not use the configuration from the /var/lib/iscsi/, where are
>> tree extra paths to achive the LUN. In multipath -ll I see an active path,
>> of course with the second storage interface IP
>>
>> systemctl status vdsmd:
>>    CGroup: /system.slice/vdsmd.service
>>            ├─4975 /usr/bin/python /usr/share/vdsm/vdsm
>>            ├─5558 /usr/bin/sudo -n /usr/sbin/iscsiadm -m node -T
>> iqn.1984-05.com.dell:powervault.md3800i.600a098000ae589c000000005893ade2
>> -I default -p 192...
>>            └─5559 /usr/sbin/iscsiadm -m node -T
>> iqn.1984-05.com.dell:powervault.md3800i.600a098000ae589c000000005893ade2
>> -I default -p 192.168.130.101 32...
>>
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>>
>
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