[dm-devel] dm-mpath: Handling SCSI-3 PR RELEASE in multi-controller environment

[Yibin Wang]

On 2016/10/13 17:19, Yibin Wang wrote:
> Hi Christoph,
>
> Thanks for your reply. Comments inline...
>
> On 2016/10/9 23:16, Christoph Hellwig wrote:
> ......
>>
>>>     - For regisetr, we should stop iteration on failure, and 
>>> followed by a
>>>      non-stopping unregister operation.
>> What do you mean with "non-stopping"?  Currently once register failed
>> for a path we then ungerigster all paths, and ignore failures (e.g. due
>> to a down path or an not already registered path).
>

BTW, did you mean using dm_pr::fail_early as the indication whether
multipath_iterate_devices() should fail early upon failure? If that's 
the case,
I can't see it is used anywhere except in dm_pr_register().

Please correct me if I am wrong.  Thanks!

> That's exactly what I meant - do not stop on failures while doing 
> unregistration.