On Tue, 2013-11-19 at 17:00 +0530, Arshad Hussain wrote:
> Upon looking further. I found out that the target does indeed support
> ERL=[0,1,2]. As it throws error if value is not between 0 and 2.
>
> However, the symptoms remains the same. When attempting
> to login with ERL=1, the target response back ERL=0. Are we looking at
> an error?
>
No.
The ErrorRecoveryLevel parameter needs to be explicitly set on a per
TargetName+TargetPortalGroupTag basis in order to allow an initiator to
negotiate ErrorRecoveryLevel > 0.
This is set from within targetcli /iscsi/$IQN/$TPGT/ context, using:
set parameter ErrorRecoveryLevel=2
Note that ErrorRecoveryLevel=0 is enforced by default to avoid certain
initiators that attempt to negotiate ErrorRecoveryLevel>1, but end up
(historically) violating the connection recovery state machine, causing
themselves to eventually take their LUNs offline.
--nab
> Thanks,
> Arshad
>
> --snip--
> Nov 19 04:57:55 localhost kernel: [104354.626532] Illegal value for
> "ErrorRecoveryLevel", must be between 0 and 2.
> Nov 19 04:57:55 localhost kernel: [104354.626547] iSCSI Login
> negotiation failed.
> --snip--
>
> On 11/19/2013 12:41 PM, Arshad Hussain wrote:
> > Hi Nicholas,
> >
> > I am trying to negotiate "ErrorRecoveryLevel=1". At the time of login.
> > However, the response for target comes back always as
> > "ErrorRecoveyLevel=0".
> > I am assuming target is not supporting ERL>0. Is my observation correct ?
> >
> > Thanks,
> > Arshad
> >
> > [root@localhost src]# cat /sys/kernel/config/target/iscsi/lio_version
> > RisingTide Systems Linux-iSCSI Target v4.1.0-rc2
> > [root@localhost src]#
>
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