Torrey McMahon wrote:
> A Darren Dunham wrote:
>   
>> On Tue, Jun 10, 2008 at 05:32:21PM -0400, Torrey McMahon wrote:
>>   
>>     
>>> However, some apps will probably be very unhappy if i/o takes 60 seconds 
>>> to complete.
>>>     
>>>       
>> It's certainly not uncommon for that to occur in an NFS environment.
>> All of our applications seem to hang on just fine for minor planned and
>> unplanned outages.
>>
>> Would the apps behave differently in this case?  (I'm certainly not
>> thinking of a production database for such a configuration).
>>     
>
> Some applications have their own internal timers that track i/o time 
> and, if it doesn't complete in time, will error out. I don't know which 
> part of the stack the timer was in but I've seen an Oracle RAC cluster 
> on QFS timeout much faster then the SCSI retries normally allow for. (I 
> think it was Oracle in that case...)

Oracle bails out after 10 minutes (ORA-27062) ask me how I know... :-P
 -- richard

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