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On 01/31/2017 12:32 PM, Ulf Tigerstedt wrote:
> On 2017-01-31 11:09, Adrian Sevcenco wrote:
>> On 01/31/2017 02:19 AM, Andrew Hanushevsky wrote:
>>> Hi Adrian,
>> Hi!
>>
>>> OK, so the partition being used here has only 176 GB left on it and the
>>> alloc parameter says each request needs to reserve 20 GB of that. So, if
>>> you get 8 requests in short order the 9th one will get not enough space
>>> error. That won't be readjusted until 10 minutes go by (see the
>>> oss.cachescan directive). Thus far, I don't see anything unusual given
>>> the circumstances.
>> great, thank for explanation! beside lowering the oss.alloc is there a
>> way to limit the number of write requests? maybe some combination of
>> cms.sched on redirector?
>
> Over on this side of the pond alice files are an average 40 megabytes,
> so preallocating 20G for each is perhaps a bit overkill?
i don't know the statistics of the files, but the problem was that it 
did not cross my mind the implications of pre-allocations :( .. i will 
ask Costin about maximum size of a file on T2 storage, but in mean time 
i reduced the allocation to 5G.

Thank for your input and information!!
Adrian



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