Neto, Once again, I would recommend you to use blkreplay instead of fio. You can control the compressibility ratio in blkreplay using fill_random parameter. --Alireza On Tue, Feb 9, 2016 at 2:29 PM, neto from Brazil <Antonio.Jose.Rodrigues.Neto@xxxxxxxxxx> wrote: > >>Hi All, >> >>This is neto from Brazil >> >>How are you? >> >>I have captured a blktrace from an Oracle workload. 18 dm devices. >> >>Steps to capture: >> >>blktrace <device 0> <device 1> ... -w 40 >>blkparse -i <device 0> -i <device 1> ... -o /dev/null -d oracle_trace.out >> >>Trying to replay with FIO (here I have 2 devices - /dev/sdh and /dev/sdi) >> >>Testing with one device: >> >>[workload] >>ioengine=libaio >>iodepth=1 >>size=100g >>numjobs=1 >>direct=1 >>thread >>read_iolog=/root/traces/oracle-s144/oracle_trace.out >>replay_no_stall=1 >>replay_redirect=/dev/sdh >> >>[root@oraperf1 fio]# ./fio oracle-replay.cfg >>workload: (g=0): rw=read, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=1 >>fio-2.2.9-26-g669e >>Starting 1 thread >>fio: ioengines.c:422: td_io_open_file: Assertion `!fio_file_open(f)' >>failed. >>Aborted (core dumped) >> >> >> >> >> >>Questions: >> >>1) The workload that I capture, all DM devices have 200GB size. My devices >>where I want to replay have 100GB. I believe I will need to match the size >>of all disks (where I captured the workload) with the destination where I >>am going to replay. For example: If I capture a workload with 18 LUNs >>200GB, to replay I need to have 18 LUNs with 200GB minimum. >> >>2) I need to replay to more than one device. How can I do that with fio? >>Seems to me replay_redirect is for a single specified device. >> >>3) Any help why I am getting that error? fio: ioengines.c:422: >>td_io_open_file: Assertion `!fio_file_open(f)' failed. >> >>Thank you very much for all help. >> >>All the best >> >>Neto > > > Hi All, > > This is neto from Brazil > > How are you? > > Any suggestions here? > > Thank you, > > neto > > -- > 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 -- 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
