Re: fio problems

[Jens Axboe <axboe@kernel.dk>]

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On 2012-04-05 03:24, Danny Kukawka wrote:
> Am 04.04.2012 22:15, schrieb Jens Axboe:
>> On 2012-04-04 13:50, Jens Axboe wrote:
>>>> 2) fio 2.0.6 and also the current git tends to fail with this error:
>>
>>>>    fio 2.0.6
>>>>    Starting 1 process
>>>>    fio: iolog.c:242: log_io_piece: Assertion `ipo->len == __ipo->len'
>>>>    failed.:08m:31s]
>>
>>>> It seems that we can prevent it when we use the --size parameter, but we
>>>> would like to prevent the usage of the parameter, if possible
>>
>>> Strangely, I had two reports of this today. Did a bit of digging, and
>>> it's due to this commit:
>>
>>> commit c04e4661e4da3b6079f415897e4507cf8e610c54
>>> Author: Daniel Ehrenberg <dehrenberg@google.com>
>>> Date:   Fri Mar 16 18:54:15 2012 +0100
>>
>>>     time_based: Avoid restarting main I/O loop
>>
>>> I think what is going on here is that your job is time based, and when
>>> we fail getting a new offset, we clear the offset bitmap. But we could
>>> have verifies pending at this point, we'd need to prune this out as
>>> well.
>>
>> Actually, since it happens so rarely, I think the better approach is
>> just to ignore it. I've updated fio to reflect that.
> 
> Btw. I can suppress the error if I add --size with a high number e.g.
> --size=1p.

It'll still happen eventually, it just takes longer. But the fix is
committed, so you should be fine going forward.

- -- 
Jens Axboe

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