> On Mon, Oct 26, 2009 at 09:41:37PM -0400, Anurag S. Maskey wrote:
>
>> This disabling of the datalink-management service is for bfu from
>> pre-dlmgmtd world to post-dlmgmtd world. Do we still need to make this
>> consideration or can we change the bfu script so that
>> datalink-management is not disabled anymore?
>>
> Unfortunately, we need to handle both cases. We can't just rip
> this out; we need to detect which case we're in, and adjust the
> behavior if it's the post-dlmgmtd to post-dlmgmtd scenario, while
> still doing the right thing (existing behavior) for the pre-dlmgmtd
> to post-dlmgmtd case. Ick.
>
Code review requested for
9947 NWAM causes network disruption when BFUing over NFS -
hanging BFU
http://defect.opensolaris.org/bz/show_bug.cgi?id=9947
webrev at
http://zhadum.east/export/ws/am223141/checkout-area/nwam1-fixes/webrev/
The determination of post-dlmgmtd world is done by checking if "svcs
datalink-management" return 0 or not.
Thanks,
Anurag
>> -------- Original Message --------
>> Subject: Re: disabling datalink-management in bfu
>> Date: Mon, 26 Oct 2009 13:16:06 -0700
>> From: Cathy Zhou <Cathy.Zhou at Sun.COM>
>> To: Anurag S. Maskey <Anurag.Maskey at Sun.COM>
>> CC: Eric.Cheng at Sun.COM, clearview at sun.com
>> References: <4AE5EA41.5090006 at Sun.COM>
>>
>>
>>
>> I believe this is for bfu from pre-dlmgmtd to post-dlmgmtd, in that
>> case, there is no safe environment for dlmgmtd to run and we expect it
>> to be only run after reboot.
>>
>> I believe you can change the bfu script to skip that part if that is not
>> the case (if this is a bfu from post-dlmgmtd to post-dlmgmtd).
>>
>> Thanks
>> - Cathy
>>
>>> Hi Cathy and Eric,
>>>
>>> bfu disables the datalink-management during the course of its
>>> execution. This has been presents NWAM phase 1 with problems as
>>> described in bug
>>>
>>> 9947 NWAM causes network disruption when BFUing over NFS -
>>> hanging BFU
>>> http://defect.opensolaris.org/bz/show_bug.cgi?id=9947
>>>
>>> The summary is that datalink-management is disabled during the course
>>> of bfu. This disrupts the network as NWAM is told that links don't
>>> exist and it tears things down.
>>>
>>> I did some investigation and found the cause of the disabling. I
>>> wrote it out at
>>> http://defect.opensolaris.org/bz/show_bug.cgi?id=9947#c6.
>>>
>>> Is there a specific reason why the datalink-management service has to
>>> be disabled during bfu? If not, the fix would simply be to call
>>> smf_import_service() with just the dlmgmt.xml manifest.
>>>
>>> Thanks,
>>> Anurag
>>>
>>>
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>>
