>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
