----- Original Message ----- > From: "Jens Axboe" <axboe@xxxxxxxxx> > To: "Georg Schönberger" <gschoenberger@xxxxxxxxxxxxxxxx> > Cc: fio@xxxxxxxxxxxxxxx > Sent: Tuesday, 31 July, 2012 8:48:13 PM > Subject: Re: Problem using --offset: fix call to fadvise64 > > On 2012-07-20 12:30, Georg Schönberger wrote: > > I have now figured out the problem: when testing with a whole > > partition "/dev/sdb1" and specifying an offset you have also to > > specify a size via "--size". I thought that if I am using an offset > > with a partition Fio would carry out the test starting at the > > offset > > until the end of the partition. But this is not the case, you have > > to > > explicitly give the rest of partition's size starting from the > > offset. > > This was my fault, Fio is doing everything correctly. > > We could improve and have fio get the partition size in this case. > The > problem is that if it's a block device, it'll get the full size. A > bit > counter intuitive. > > -- > Jens Axboe > > Maybe we could solve it by having "--size" as a mandatory argument if "--offset" is given. In my opinion as a first solution that would be the easiest way. -Georg -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
