> On Sep 16, 2018, at 8:45 PM, Jens Axboe <axboe@xxxxxxxxx> wrote: > >> On 9/16/18 9:34 PM, smitha sunder wrote: >> >> >>>> On Sep 16, 2018, at 8:31 PM, Jens Axboe <axboe@xxxxxxxxx> wrote: >>>> >>>> On 9/16/18 9:13 PM, smitha sunder wrote: >>>> >>>> >>>>>>> On Sep 16, 2018, at 8:02 PM, Jens Axboe <axboe@xxxxxxxxx> wrote: >>>>>>> >>>>>>>> On 9/16/18 5:24 PM, smitha sunder wrote: >>>>>>>> On Sun, Sep 16, 2018 at 3:02 PM, Sitsofe Wheeler <sitsofe@xxxxxxxxx> wrote: >>>>>>>> On Sat, 15 Sep 2018 at 23:14, smitha sunder <sundersmitha@xxxxxxxxx> wrote: >>>>>>>> >>>>>>>> Hello all, >>>>>>>> >>>>>>>> I have a 30TB drive and I am running into an issue with random writes. >>>>>>>> I went through this thread : >>>>>>>> https://www.spinics.net/lists/fio/msg06294.html that seems to be fixed >>>>>>>> already. >>>>>>> >>>>>>> I think that was something different regarding different blocksizes >>>>>>> per direction. >>>>>>> >>>>>>>> I see the same issue with random reads as well. >>>>>>>> So not sure what is the issue here in my case; any help is greatly appreciated. >>>>>>>> >>>>>>>> >>>>>>>> Read Capacity results: >>>>>>>> Protection: prot_en=1, p_type=1, p_i_exponent=0 [type 2 protection] >>>>>>>> Logical block provisioning: lbpme=1, lbprz=1 >>>>>>>> Last logical block address=58781073407 (0xdaf9fffff), Number of >>>>>>>> logical blocks=58781073408 >>>>>>>> Logical block length=512 bytes >>>>>>>> Logical blocks per physical block exponent=3 [so physical block >>>>>>>> length=4096 bytes] >>>>>>>> Lowest aligned logical block address=0 >>>>>>>> Hence: >>>>>>>> Device size: 30095909584896 bytes, 2.87017e+007 MiB, 30095.9 GB >>>>>>>> >>>>>>>> >>>>>>>> C:\Program Files (x86)\fio>fio --ioengine=windowsaio --group_reporting >>>>>>>> --direct=1 --size=100% --bs=4K --thread --filename=\\.\PhysicalDrive1 >>>>>>>> --name=precond --rw=randwrite --iodepth=1 --numjobs=1 >>>>>>>> --debug=io,random >>>>>>> >>>>>>> <snip> >>>>>>> >>>>>>>> io 3372 fill: io_u 0A458780: >>>>>>>> off=0x144365e7d000,len=0x0,ddir=1,file=\\.\PhysicalDrive1 >>>>>>>> io 3372 get_io_u: zero buflen on 0A458780 >>>>>>>> io 3372 get_io_u failed >>>>>>>> io 3372 drop page cache \\.\PhysicalDrive1 >>>>>>>> random 3372 off rand 17311067694306724737 >>>>>>> >>>>>>> That offset is crazy big - I'm sure it's bigger than a petabyte so my >>>>>>> guess is that something is overflowing. If you use --size=27g does the >>>>>>> job go through? >>>>>>> >>>>>>> [...] >>>>>>> >>>>>>>> I don’t see this issue if I use bs=8K or I use ba=512,8K, etc. >>>>>>> >>>>>>> -- >>>>>>> Sitsofe | http://sucs.org/~sits/ >>>>>> Hi Sitsofe, >>>>>> >>>>>> Thanks for the reply! >>>>>> >>>>>> Yes; If I use --size=27G or if provide the exact size that the OS >>>>>> displays, then the job goes through. >>>>> >>>>> Are you running a 32-bit or 64-bit build of fio? >>>>> >>>>> -- >>>>> Jens Axboe >>>>> >>>> 32 bit. >>> >>> I thought so. I see a few 32-bit issues with huge devices. One of them is >>> this one: >>> >>> http://git.kernel.dk/cgit/fio/commit/?id=604d3f5bd9f2b985568593c23f8292cbc7f4044c >>> >>> but I'm sure there are others, I'll try and reproduce and get this fixed. >>> >>> -- >>> Jens Axboe >>> >> I see the same issue even with 64 bit fio build. > > One more fix, and it seems to be running for me: > > http://git.kernel.dk/cgit/fio/commit/?id=39c56bc010a609f6c89955cbcfa289834ffef336 > > Any chance you can try a new build that has those last two commits? > > -- > Jens Axboe > Certainly; I can give the new build a try. Thanks Smitha
