Re: [PATCH-v4 0/5] Fix LUN_RESET active I/O + TMR handling

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Hi Himanshu,

On Mon, 2016-02-08 at 23:27 +0000, Himanshu Madhani wrote:
> 
> I am testing this series with with 4.5.0-rc2+ kernel and I am seeing issue
> where trying to trigger
> sg_reset with option of host/device/bus in loop at 120second interval
> causes call stack. At this point
> removing configuration hangs indefinitely. See attached dmesg output from
> my setup. 
> 

Thanks alot for testing this.

So It looks like we're still hitting a indefinite schedule() on
se_cmd->cmd_wait_comp once tcm_qla2xxx session disconnect/reconnect
occurs, after repeated explicit active I/O remote-port sg_resets.

Does this trigger on the first tcm_qla2xxx session reconnect after
explicit remote-port sg_reset..?  Are session reconnects actively being
triggered during the test..?

To verify the latter for iscsi-target, I've been using a small patch to
trigger session reset from TMR kthread context in order to simulate the
I_T disconnects.  Something like that would be useful for verifying with
tcm_qla2xxx too.

That said, I'll be reproducing with tcm_qla2xxx ports this week, and
will enable various debug in a WIP branch for testing.

Thank you,

--nab

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