Seperate Metadata Support

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
0
down vote

favorite












We are working on NVMe driver in linux kernel 4.13.10. We want to test an NVMe I/O commands with separate metadata. We send the command using IOCTL, and along the command we send the buffer to be used by driver to be sent to controller for metadata. The driver uses blk_execute_rq to submit the command to the block layer.



This implementation works properly for normal commands, but when used with separate metadata, it crashes at blk_mq_start_request.



Any help or information regarding this would be useful.






linux-kernel







share|improve this question







New contributor




anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.























    up vote
    0
    down vote

    favorite












    We are working on NVMe driver in linux kernel 4.13.10. We want to test an NVMe I/O commands with separate metadata. We send the command using IOCTL, and along the command we send the buffer to be used by driver to be sent to controller for metadata. The driver uses blk_execute_rq to submit the command to the block layer.



    This implementation works properly for normal commands, but when used with separate metadata, it crashes at blk_mq_start_request.



    Any help or information regarding this would be useful.






    linux-kernel







    share|improve this question







    New contributor




    anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      We are working on NVMe driver in linux kernel 4.13.10. We want to test an NVMe I/O commands with separate metadata. We send the command using IOCTL, and along the command we send the buffer to be used by driver to be sent to controller for metadata. The driver uses blk_execute_rq to submit the command to the block layer.



      This implementation works properly for normal commands, but when used with separate metadata, it crashes at blk_mq_start_request.



      Any help or information regarding this would be useful.






      linux-kernel







      share|improve this question







      New contributor




      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      We are working on NVMe driver in linux kernel 4.13.10. We want to test an NVMe I/O commands with separate metadata. We send the command using IOCTL, and along the command we send the buffer to be used by driver to be sent to controller for metadata. The driver uses blk_execute_rq to submit the command to the block layer.



      This implementation works properly for normal commands, but when used with separate metadata, it crashes at blk_mq_start_request.



      Any help or information regarding this would be useful.






      linux-kernel




      linux-kernel






      share|improve this question







      New contributor




      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






      New contributor




      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 10 mins ago









      anujsingh.kr

      1




      1




      New contributor




      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      anujsingh.kr is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.

























          active

          oldest

          votes











          Your Answer







          StackExchange.ready(function()
          var channelOptions =
          tags: "".split(" "),
          id: "106"
          ;
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function()
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled)
          StackExchange.using("snippets", function()
          createEditor();
          );

          else
          createEditor();

          );

          function createEditor()
          StackExchange.prepareEditor(
          heartbeatType: 'answer',
          convertImagesToLinks: false,
          noModals: false,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          );



          );






          anujsingh.kr is a new contributor. Be nice, and check out our Code of Conduct.









           

          draft saved


          draft discarded


















          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f478340%2fseperate-metadata-support%23new-answer', 'question_page');

          );

          Post as a guest






















          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          anujsingh.kr is a new contributor. Be nice, and check out our Code of Conduct.









           

          draft saved


          draft discarded


















          anujsingh.kr is a new contributor. Be nice, and check out our Code of Conduct.












          anujsingh.kr is a new contributor. Be nice, and check out our Code of Conduct.











          anujsingh.kr is a new contributor. Be nice, and check out our Code of Conduct.













           


          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f478340%2fseperate-metadata-support%23new-answer', 'question_page');

          );

          Post as a guest
































































          -

          Popular posts from this blog

          How to check contact read email or not when send email to Individual?

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Se
          Read more

          Bahrain

          Image
          For other uses, see Bahrain (disambiguation). Sovereign island state in the Persian Gulf Kingdom of Bahrain مملكة البحرين   (Arabic) Mamlakat al-Baḥrayn Flag Coat of arms Anthem:  نشيد البحرين الوطني Bahrainona Our Bahrain Location of   Bahrain    (circled in red) Capital and largest city Manama 26°13′N 50°35′E  /  26.217°N 50.583°E  / 26.217; 50.583 Official languages Arabic Ethnic groups (2010 [1] ) 50.7% Arab (46% Bahrani, 4.7% other Arabs) 45.5% Asian 1% European 1.2% Others Religion Islam Demonym(s) Bahraini Government Unitary constitutional monarchy • King Hamad bin Isa Al Khalifa • Crown Prince Salman bin Hamad bin Isa Al Khalifa • Prime Minister Khalifa bin Salman Al Khalifa Legislature National Assembly • Upper house Consultative Council • Lower house Council of Representatives Independence • Declared Independence [2] 14 August 1971 • from United Kingdom [1] 15 August 1971 • Admitted to the United Nations 21 September 1971 • Kingdom of Bahrain 14 February 2002
          Read more

          Postfix configuration issue with fips on centos 7; mailgun relay

          Image
          Clash Royale CLAN TAG #URR8PPP up vote 0 down vote favorite I am trying to setup postfix to relay all mail generated on the local machine via SMTP to a mailgun relay. I have used the mailgun relay before with success on an ubuntu server, but I am migrating to a Centos 7 server which I will be running in FIPS mode. There error log is below, slightly sanitized. I have a small enough network that I choose to have each machine reach out to mailgun individually (this the loopback-only, 127.0.0.0/8 restrictions) and no firewall open port allowing smtp in to the machine. I assume the FIPS mode (and with it disabling of MD5) is causing problems, but I don't know how to overcome it or if it is even possible for tls_fprint to use some supported hash such as sha256 or sha512. However, the relay=none is slightly concerning since I have relayhost set, but perhaps that is because the smtp process is failing? Any help would be appreciated! postconf -n: alias_database = hash:/etc/alia
          Read more