Thank you Ankit! I captured a trace using the example config file. What does rw=read:-8k translate to in terms of LBA? I am seeing 4K seq read in reverse manner. I am not sure what that 8k implies. Each read is apart by 8. For example, the workload accessed LBAs 1540000, 1539992, 1539984, 1539976, 1539968, and so on. Each read requested 8 logical blocks and the sector size is 512B which makes up a 4K read. Can you elaborate the -8K for me please? On Fri, Feb 3, 2023 at 1:38 PM Jay Han <jayhan258@xxxxxxxxx> wrote: > > Thank you Ankit! I captured a trace using the example config file. What does rw=read:-8k translate to in terms of LBA? I am seeing 4K seq read in reverse manner. I am not sure what that 8k implies. > Each read is apart by 8. For example, the workload accessed LBAs 1540000, 1539992, 1539984, 1539976, 1539968, and so on. > Each read requested 8 logical blocks and the sector size is 512B which makes up a 4K read. > > Can you elaborate the -8K for me please? > > > > On Fri, Feb 3, 2023 at 11:07 AM Ankit Kumar <ankit1455@xxxxxxxxx> wrote: >> >> Hey Jan, >> >> Replying again as the first one didn't go to the mailing list because >> of that not being in plain text. >> >> Yes, you can read/write in reverse order and there is already an >> example fio configuration. >> Check out: >> https://github.com/axboe/fio/blob/master/examples/backwards-read.fio >> >> Regards >> Ankit >> >> >> On Fri, Feb 3, 2023 at 10:58 PM Jay Han <jayhan258@xxxxxxxxx> wrote: >> > >> > Hello, >> > I am trying to configure a sequential read or write pattern that reads >> > or writes in reverse manner in terms of LBAs. Is this feasible with >> > the features that are in current build? If so, any guidance would be >> > greatly appreciated. >> > >> > Thank you, >> > Jay,
