On 04/28/2012 09:09 PM, Suresh Dhanarajan wrote: > Hi Jens, > > I verified the offsets by using the write_io_log switch. > when i use offset increment without patch the offset are incremented > and not reset to zero after stone wall. > when i use with patch the offset resets to zero after stone wall. > I hope you are testing with the patch. > If it is so this what the behavior iam also seeing. I'm puzzled. Did a full test here now, with the patch. Simple job: [global] ioengine=null bs=1k size=10m offset_increment=1m numjobs=2 write_iolog=log [job1] rw=read [job2] stonewall rw=read using both the write_iolog and --debug=io, I verified that job1 has two files, one starts at 0M the next at 1M. job2 has two files, one starts at 0M the next at 1M. If I remove the stonewall, job1 has 0M/1M and job has 2M/3M. That certainly looks like it's working to me. I think you need to check and double check that you are indeed using a patched version. And note that write_iolog will _append_ to an existing log file. Perhaps you are looking at an earlier entry set? -- Jens Axboe -- 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
