Date: Wed, 15 May 2013 13:59:55 +0530 From: Ajit Jain <ajit.jain@cloudbyte.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: seeing data corruption with zfs trim functionality Message-ID: <CAA71u6YKGHDRVg6W_xnCNaA68bJvAZ2Lkp-UisiPqb1vKjJhfA@mail.gmail.com> In-Reply-To: <CAA71u6ZuO9CF0ECFS4z07-E5qPea-6SfNwkvhr_g6pFT5MV5yQ@mail.gmail.com> References: <CAA71u6Y5dKZ9O0rqxCpx-9t7DYgTnPZSoNy-iHOnmzrOUYp%2Bvw@mail.gmail.com> <60316751643743738AB83DABC6A5934B@multiplay.co.uk> <20130429105143.GA1492@icarus.home.lan> <3AD1AB31003D49B2BF2EA7DD411B38A2@multiplay.co.uk> <C6AA4D0A7C49469ABB3C7440B1BCC108@multiplay.co.uk> <CAA71u6Zh7BbbdC=utqfR2MD1Nn=9euUDXHKqqu9NyBG-Jx%2B=Ow@mail.gmail.com> <9681E07546D348168052D4FC5365B4CD@multiplay.co.uk> <CAA71u6ZuO9CF0ECFS4z07-E5qPea-6SfNwkvhr_g6pFT5MV5yQ@mail.gmail.com>
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Hi Steve, One more thing I am not seeing data corruption with SATA SSD (kingston). The issue was seen on SAS SSD i.e. Seagate PULSAR ST100FM0002 . regards, ajit On Wed, May 15, 2013 at 1:49 PM, Ajit Jain <ajit.jain@cloudbyte.com> wrote: > Hi Steven, > > Please find the tar ball of src code and binary of the test utility > attached with the mail. > Steps of test: > 1. Enable zfs trim in /boot/loader.conf (vfs.zfs.trim_disable=0) > 2. Set the delete method of the ssd device as UNMAP or WS16. > 3. Create a pool (and optionally dataset) on the device. > 4. Run iotest utility with thread count 10 (-t option) file size as at > least 5GB > Second to execute as at least 500 sec (-T option) and write as 100% (W > option). > > regards, > ajit > > > On Wed, May 15, 2013 at 12:56 PM, Steven Hartland <killing@multiplay.co.uk > > wrote: > >> Could you provide us with details on the tests your using so we can >> run them here on current sources and see if we see any issues? >> >> Regards >> Steve >> >> ----- Original Message ----- From: "Ajit Jain" <ajit.jain@cloudbyte.com> >> To: "Steven Hartland" <killing@multiplay.co.uk> >> Cc: "freebsd-fs" <freebsd-fs@freebsd.org> >> Sent: Wednesday, May 15, 2013 6:47 AM >> >> Subject: Re: seeing data corruption with zfs trim functionality >> >> >> Hi Steven, >>> >>> Thanks for the follow-up. >>> The code where I pulled in zfs trim patches is not updated to 9 stable >>> specially the cam directory. >>> I pulled in many dependent patches in order to apply the patches that you >>> gave. After that all da devices >>> CAM_PERIPH_INVALID in dadone() because read capability was returning a >>> very >>> big number (bigger than MAXPHYS) >>> for the block size. I think this is because I have not update the code >>> to 9 >>> stable (only pulled in required patches and miss >>> some patches). >>> >>> So, I am planning to first update my code to 9stable and then try the >>> same >>> test again. That might take some time. >>> >>> >>> thanks again, >>> ajit >>> >>> >>> On Wed, May 15, 2013 at 2:40 AM, Steven Hartland < >>> killing@multiplay.co.uk>**wrote: >>> >>> ----- Original Message ----- From: "Steven Hartland" >>>> >>>> What version are you porting the changes to? >>>> >>>>> >>>>>>> What SSD are you using? >>>>>>> >>>>>>> What LSI controller are you using? >>>>>>> >>>>>>> >>>>>> I'd also like to see "zpool status" (for every pool that involves this >>>>>> SSD) and "gpart show" against the disk itself. >>>>>> >>>>>> >>>>> Also: >>>>> 1. What FW version is your LSI? You can get this from dmesg. >>>>> 2. The exact command line your running iotest with? >>>>> >>>>> >>>> Any update on this? I'd like to try and replicate your test here so >>>> would appreciate as much information as possible. >>>> >>>> >>>> Regards >>>> Steve >>>> >>>> ==============================****================== >>>> >>>> This e.mail is private and confidential between Multiplay (UK) Ltd. and >>>> the person or entity to whom it is addressed. In the event of >>>> misdirection, >>>> the recipient is prohibited from using, copying, printing or otherwise >>>> disseminating it or any information contained in it. >>>> In the event of misdirection, illegible or incomplete transmission >>>> please >>>> telephone +44 845 868 1337 >>>> or return the E.mail to postmaster@multiplay.co.uk. >>>> >>>> >>>> >>> >> ==============================**================== >> This e.mail is private and confidential between Multiplay (UK) Ltd. and >> the person or entity to whom it is addressed. In the event of misdirection, >> the recipient is prohibited from using, copying, printing or otherwise >> disseminating it or any information contained in it. >> In the event of misdirection, illegible or incomplete transmission please >> telephone +44 845 868 1337 >> or return the E.mail to postmaster@multiplay.co.uk. >> >> >
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