Re: [PATCH 3/3] mountstats: Check for RPC iostats version >= 1.1 with error counts

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> On Jun 19, 2019, at 1:42 PM, Chuck Lever <chuck.lever@xxxxxxxxxx> wrote:
> 
> 
> 
>> On Jun 19, 2019, at 1:22 PM, David Wysochanski <dwysocha@xxxxxxxxxx> wrote:
>> 
>> 
>> 
>> On Wed, Jun 19, 2019 at 12:35 PM Chuck Lever <chuck.lever@xxxxxxxxxx> wrote:
>> 
>> 
>>> On Jun 13, 2019, at 8:03 AM, Dave Wysochanski <dwysocha@xxxxxxxxxx> wrote:
>>> 
>>> Add explicit check for statsvers instead of array based check.
>> 
>> Hi Dave,
>> 
>> I don't understand why this change is necessary. The patch description
>> should explain.
>> 
>> 
>> Steve had already taken commit 73491ef for mountstats which was an array based check.  This just makes this patch consistent with the others.  Is that what you mean - you want a statement about consistency and refer to the other commit?  How about:
>> 
>> Commit 73491ef added per-op error counts for mountstats command but used an array based check rather than checking statsver. Add explicit check for statsver instead of array based check for consistency with other tools.
> 
> This is a better patch description (explains "why" not "what"),
> but I'm not clear why this change is necessary in either place.

In other words, was this change necessary to fix a bug? Or is
this a defensive change to make parsing more robust?


>>> Signed-off-by: Dave Wysochanski <dwysocha@xxxxxxxxxx>
>>> ---
>>> tools/mountstats/mountstats.py | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>> 
>>> diff --git a/tools/mountstats/mountstats.py b/tools/mountstats/mountstats.py
>>> index 5f13bf8e..2ebbf945 100755
>>> --- a/tools/mountstats/mountstats.py
>>> +++ b/tools/mountstats/mountstats.py
>>> @@ -476,7 +476,7 @@ class DeviceData:
>>>                if retrans != 0:
>>>                    print('\t%d retrans (%d%%)' % (retrans, ((retrans * 100) / count)), end=' ')
>>>                    print('\t%d major timeouts' % stats[3], end='')
>>> -                if len(stats) >= 10 and stats[9] != 0:
>>> +                if self.__rpc_data['statsvers'] >= 1.1 and stats[9] != 0:
>>>                    print('\t%d errors (%d%%)' % (stats[9], ((stats[9] * 100) / count)))
>>>                else:
>>>                    print('')
>>> -- 
>>> 2.20.1
>>> 
>> 
>> --
>> Chuck Lever
>> 
>> 
>> 
>> 
>> 
>> -- 
>> Dave Wysochanski
>> Principal Software Maintenance Engineer
>> T: 919-754-4024  
> 
> --
> Chuck Lever

--
Chuck Lever







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