[ovirt-users] iSCSI connection to a LUN - EMC CX4-120 - Login OK but no LUN

[Vered Volansky]

So just to keep the list updated this was resolved offline by disconnecting the iscsi session (iscsiadm -m session -u), then logging into it again.
What probably happened is that there was an existing bad session, and since it's existing, one can't login again.
Once logged out, a new good session is created.
A bad session can result from a wrong/stale /etc/iscsi/initiatorname.iscsi .
The aboce is what should be sone in this case.
If there's just a name change, restart iscsid before trying to login.

And thank you Nir for your help in helping :)

----- Original Message -----
> From: "Nicolas Ecarnot" <nicolas at ecarnot.net>
> To: users at ovirt.org
> Sent: Tuesday, October 21, 2014 1:18:47 PM
> Subject: [ovirt-users] iSCSI connection to a LUN - EMC CX4-120 - Login OK	but no LUN
> 
> Hi,
> 
> Setting up our third oVirt infra, we are now connecting it to an EMC
> CX4-120 SAN.
> On this SAN, we have set up a classical storage group, added the
> authorized hosts, registered them.
> 
> On the oVirt side, we want to create the first master storage domain and
> so we give the GUI the right SAN ip, and the iSCSI connection is working.
> 
> We see appearing the two virtual IP of the storage processors (A and B),
> and the login button reacts well, no error appears.
> But no LUN shows up at this point.
> 
> Looking at the hosts used by this connection, it appears that the iSCSI
> connection worked well, and that the LUN is visible on the host side
> ("iscsiadm -m session -P3").
> 
> So now, in the web GUI, there is no LUN showing up I could connect to.
> I have isolated the relevant logs - the engine one and the vdsm one :
> 
> Engine : http://pastebin.com/32Sg85C8
> VDSM : http://pastebin.com/BbY6mVSk
> 
> I don't know what is missing? May you help me?
> 
> --
> Nicolas Ecarnot
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