RE: Limit LBA Range

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-----Original Message-----
From: fio-owner@xxxxxxxxxxxxxxx [mailto:fio-owner@xxxxxxxxxxxxxxx] On Behalf
Of Jens Axboe
Sent: Monday, September 29, 2014 4:00 PM
To: Jon Tango; fio@xxxxxxxxxxxxxxx
Subject: Re: Limit LBA Range

On 2014-09-29 14:46, Jon Tango wrote:
> Thanks for the reply. the capacity of the SSD is 850GB, but I am 
> trying to run the workload continuously between 0 and 745GB of the 
> capacity. I would like to workload to be time based so that it 
> continues to run, even if more than 745 GB of data is written, but 
> still within that same range. Is there a method of continuing to run 
> the workload from 0 to 745GB, even if more than 745GB is written?

(please don't top post)

Sure, if you want it to run for 4h within that range, just do:

runtime=4h
timed_based

--
Jens Axboe

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I include both of those commands, in addition to size=745g, and it seems to
be conducting the workload over the entire LBA range. Is this the correct
combination of the three parameters? Here is the test script: 

 [global]
name=4ktest
filename=\\.\physicaldrive1
direct=1
numjobs=8
norandommap
ba=4k
time_based
size=745g
log_avg_msec=100000
group_reporting=1
#########################################################

[4K Precon]
stonewall
runtime=15000
iodepth=32
bs=4k
rw=randwrite

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