multiple initiator instances on same machine.
rahul gupta
I would like to know, how to configure multiple iqn names (initiator instances running) on same machine using open-iSCSI (iscsi_tcp as transport).
Under a test scenario as follows, I am able to create multiple initiator instances on the same machine, (but may be its not a cool way to do so):-
1. Start initiator with a iqn name and login into target.
2. On initiator, mount lun and run some IO.
3. Now let the IO to continue but kill iscsid.
4. Now change the initiator iqn name and again start the daemon.
5. Login into the target and start IO.
6. On running iscsiadm -m session -P 3
Its observed that both the sessions are eastablished with different initiator iqn name and IO is going fine on both sessions.
Is it really whats expected?
Best Regards,
Rahul.
Pasi Kärkkäinen
Do you absolutely require different IQN names for the initiator?
You should be able to specify separate session ID (iirc SID) to create
multiple connections from a single initiator.
-- Pasi
rahul gupta
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Pasi Kärkkäinen
> Yes, I require two different IQN names for the initiator.
>
Can you please explain in what kind of scenario two different
iqn names are needed for a single initiator? I haven't personally
had that requirement so far.. so I'm trying to figure out when it's needed.
> I know, if I login into different targets or same target multiple times
> (on different portals) then separate sessions and thus multiple
> connections are created.
>
Yeah, and even if you have just a single target/portal you can create
multiple session to it from a single initiator by using different sid values.
-- Pasi
> Best Regards,
> Rahul.
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Shyam...@dell.com
> -----Original Message-----
> From: open-...@googlegroups.com [mailto:open-...@googlegroups.com]
> On Behalf Of Pasi Kärkkäinen
> Sent: Saturday, March 19, 2011 10:16 AM
> To: rahul gupta
> Cc: open-...@googlegroups.com
> Subject: Re: multiple initiator instances on same machine.
>
> On Sat, Mar 19, 2011 at 06:59:55PM +0530, rahul gupta wrote:
> > Yes, I require two different IQN names for the initiator.
> >
>
> Can you please explain in what kind of scenario two different
> iqn names are needed for a single initiator? I haven't personally
> had that requirement so far.. so I'm trying to figure out when it's
> needed.
Having different iqns to create sessions can give a lot of flexibility..
See this presentation I gave in last linuxcon http://events.linuxfoundation.org/slides/2010/linuxcon2010_iyer.pdf
Mike Christie
No.
Just create a iface for each initiator.
iscsiadm -m iface -I iface1 -o new
iscsiadm -m iface -I iface1 -o update -v iface.initiatorname yourname
iscsiadm -m iface -I iface2 -o new
iscsiadm -m iface -I iface2 -o update -v iface.initiatorname yourothername
iscsiadm -m discovery -t st -p ip -I iface2 -I iface1 -P 1
iscsiadm -n node -I iface1 -l
iscsiadm -n node -I iface2 -l
rahul gupta
Thanks Mike,
With your pointers, I am able to create different sessions with different initiator iqn names from the same initiator machine.
Best Regards,
Rahul.