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    dmraid and mdadm?

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    • Tom ElliottT
      Tom Elliott @rbaldwin
      last edited by

      You could just start the client in debug mode (both without mdraid=true).

      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

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      • Tom ElliottT
        Tom Elliott
        last edited by

        To add on, the file that handles assembling of raid devices is: /etc/init.d/S99fog.

        Particularly lines 17 thru 20.

        Mind you we’re not starting dmraid, we’re actually using mdadm

        Maybe try a mechanism that can use mdadm to assemble the disks?

        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

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        • R
          rbaldwin @Tom Elliott
          last edited by rbaldwin

          @Tom-Elliott

          I haven’t been able to make mdadm assemble the disk.

          For example:
          mdadm --assemble /dev/md0 /dev/sda /dev/sdb

          Complains that disk /dev/sda and /dev/sdb do not contain a superblock.

          Tom ElliottT 1 Reply Last reply Reply Quote 0
          • Tom ElliottT
            Tom Elliott @rbaldwin
            last edited by

            @rbaldwin They wouldn’t, you need to point at the partitions that are defined for them.

            (Of course that’s assuming there are partitions defined).

            What’s the output of fdisk -l for /dev/sda1 and /dev/sdb1?

            Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

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            • Tom ElliottT
              Tom Elliott
              last edited by

              What about the output of mdadm --assemble --scan

              Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

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              R Tom ElliottT 3 Replies Last reply Reply Quote 0
              • R
                rbaldwin @Tom Elliott
                last edited by rbaldwin

                @Tom-Elliott

                The raid array has a Windows 7 64bit installation on it and is defined as ~1TB

                Raid configuration in Bios:
                https://goo.gl/photos/iLZveDYK1vJ6Tijt6

                mdadm --examine on /dev/sda
                https://goo.gl/photos/9DTovJpVxsrLPApA9

                mdadm --examine on /dev/sdb
                https://goo.gl/photos/BY8ynhEzmsFNHtES6

                mdadm --examine --scan output:
                https://goo.gl/photos/Hq3CN682Hc3jshq1A

                As you can see mdadm can see the volume but for some reason doesn’t automatically assemble it. I don’t know eneough about how this works to say why. Just looking at dmraid because I’ve seen it work on the Ubuntu 16.04 live cd. Something I can’t say for mdadm so for on the P50. mdadm works fine on the Lenovo W530.

                fdisk -l output:
                https://goo.gl/photos/jMvtUtfyjsoyPZBH6

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                • R
                  rbaldwin @Tom Elliott
                  last edited by

                  @Tom-Elliott

                  It’s in my last reply:
                  https://goo.gl/photos/Hq3CN682Hc3jshq1A

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                  • R
                    rbaldwin @Tom Elliott
                    last edited by

                    @Tom-Elliott

                    Sorry just noticed you said mdadm --assemble --scan

                    “no arrays found in configure file or automatically”

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                    • Tom ElliottT
                      Tom Elliott
                      last edited by

                      http://unix.stackexchange.com/questions/273819/how-do-i-rebuild-create-assemble-an-imsm-raid-0-array-from-disk-images-instead

                      It appears you might need to specify a chunk size? I don’t know what that chunksize will be, but if you can test the ideas on the above link, and figure out, I can work to add a “chunk” size argument for the raid if all works.

                      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                      Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

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                      R 1 Reply Last reply Reply Quote 1
                      • R
                        rbaldwin @Tom Elliott
                        last edited by rbaldwin

                        @Tom-Elliott

                        I was able to build the array with the mdadm command shown here:
                        https://goo.gl/photos/7gtJf1hHVi4VAjj18

                        The build command seems to be the key here, as It works with and without the chunk command.
                        I haven’t mounted it yet to see if it’s readable, but this is progress from what I’ve seen so far. Not sure what to do now, since this works great in Debug mode, but wont be done automatically on fresh reboots to debug, capture or deploy.

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                        • R
                          rbaldwin
                          last edited by

                          Any pointers on this, I just need to be able to specify these commands to FOG when these hosts boot up for imaging?

                          Tom ElliottT 1 Reply Last reply Reply Quote 0
                          • Tom ElliottT
                            Tom Elliott @rbaldwin
                            last edited by

                            @rbaldwin The difference is your commands are implicit (with or without the chunk commands). The methods that are in use when you run just a “normal” runner, the code is greatly different.

                            Maybe it’s my unknowing how to do so. If you’d like, you can play with the code a bit (in a debug mode maybe?)

                            The information FOG currently uses (and works for the few other cases we have of people using RAID layout) is located here:
                            https://github.com/FOGProject/fogproject/blob/dev-branch/src/buildroot/package/fog/scripts/etc/init.d/S99fog#L17

                            Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                            Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                            Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

                            Tom ElliottT 1 Reply Last reply Reply Quote 0
                            • Tom ElliottT
                              Tom Elliott @Tom Elliott
                              last edited by Tom Elliott

                              Specifically, I’m hoping that you could run the mdadm --assemble --scan with a chunk size specified in the command line. If this successfully builds your imsm array, then I can adjust our arguments to accept the “chunk” size.

                              Perhaps:

                              mdadm --auto-detect --assemble --scan
                              

                              Of course I don’t have an array I could test this with, sorry.

                              Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                              Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                              Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

                              Tom ElliottT R 2 Replies Last reply Reply Quote 0
                              • Tom ElliottT
                                Tom Elliott @Tom Elliott
                                last edited by

                                I’m working on thoughts so if my messages seem to drift around it’s probably just thinking a lot.

                                Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                                Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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                                • Tom ElliottT
                                  Tom Elliott
                                  last edited by Tom Elliott

                                  Looking a bit more, I’ve added three hopeful bits for solving this.

                                  First, the mdadm --auto-detect should be by itself as mdadm is then asking the kernel to activate the arrays. (Source: https://linux.die.net/man/8/mdadm)

                                  So --assemble --scan is not “compatible” with the --auto-detect argument (mdadm --auto-detect --assemble --scan vs mdadm --auto-detect).

                                  I’ve updated the code base in the init’s for handling this to try these three things:

                                  mdadm --auto-detect
                                  mdadm --assemble --scan
                                  mdadm --incremental --run --scan
                                  

                                  If you jump on the dev-branch, it should update the inits for this new stuff. If these new changes still don’t work, please see if there’s a way we can do an auto assembly on the iMSM raid. If we cannot auto-assemble, it is extremely difficult (currently) to make a working method for you. I suppose I could add a “postinitload” scripts thing, similar to postdownload scripts. I’d really prefer seeing if the current code could handle this with these modifications or an auto assembly model over implicit command to generate the array.

                                  Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                                  Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                  Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

                                  R 1 Reply Last reply Reply Quote 0
                                  • R
                                    rbaldwin @Tom Elliott
                                    last edited by rbaldwin

                                    @Tom-Elliott said in dmraid and mdadm?:

                                    Specifically, I’m hoping that you could run the mdadm --assemble --scan with a chunk size specified in the command line. If this successfully builds your imsm array, then I can adjust our arguments to accept the “chunk” size.

                                    Perhaps:

                                    mdadm --auto-detect --assemble --scan
                                    

                                    Of course I don’t have an array I could test this with, sorry.

                                    –chunk is an invalid command on the --assemble command as is --auto-detect

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                                    • R
                                      rbaldwin @Tom Elliott
                                      last edited by

                                      @Tom-Elliott said in dmraid and mdadm?:

                                      Looking a bit more, I’ve added three hopeful bits for solving this.

                                      First, the mdadm --auto-detect should be by itself as mdadm is then asking the kernel to activate the arrays. (Source: https://linux.die.net/man/8/mdadm)

                                      So --assemble --scan is not “compatible” with the --auto-detect argument (mdadm --auto-detect --assemble --scan vs mdadm --auto-detect).

                                      I’ve updated the code base in the init’s for handling this to try these three things:

                                      mdadm --auto-detect
                                      mdadm --assemble --scan
                                      mdadm --incremental --run --scan
                                      

                                      If you jump on the dev-branch, it should update the inits for this new stuff. If these new changes still don’t work, please see if there’s a way we can do an auto assembly on the iMSM raid. If we cannot auto-assemble, it is extremely difficult (currently) to make a working method for you. I suppose I could add a “postinitload” scripts thing, similar to postdownload scripts. I’d really prefer seeing if the current code could handle this with these modifications or an auto assembly model over implicit command to generate the array.

                                      I booted in debug mode and ran the following.
                                      mdadm --auto-detect
                                      mdadm --assemble --scan
                                      mdadm --incremental --run --scan

                                      /proc/mdstats shows 0 devices.

                                      mdadm --detail /dev/md0
                                      Shows inactive with 0 devices.

                                      A postinitload script would be great, if I could specify that per host. As I have many Lenovo W530/W520s with RAID that work just fine with the existing FOG RAID Configurations. It’s only the brand new EUFI Bios’ed Lenovo P50s that are having this issue.

                                      Is there perhaps a newer version of mdadm tools? Maybe these new Intel fake RAID controllers aren’t supported by the older version?

                                      Tom ElliottT 1 Reply Last reply Reply Quote 0
                                      • Tom ElliottT
                                        Tom Elliott @rbaldwin
                                        last edited by

                                        @rbaldwin But they are supported, they’re just to supporting auto assembly. You showed that they did get detected if you structured the call.

                                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                                        Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                        Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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                                        • Tom ElliottT
                                          Tom Elliott @Tom Elliott
                                          last edited by

                                          Maybe this could help?

                                          mdadm --assemble --scan --metadata=imsm
                                          mdadm --incremental --run --scan --metadata=imsm
                                          

                                          I am hoping to find something.

                                          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

                                          Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                          Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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                                          • Wayne WorkmanW
                                            Wayne Workman
                                            last edited by

                                            Can we please summarize this thread in 1 or 2 posts please? It’s now 24 posts long and getting unwieldy. I want to help - probably as others do - but I’ve just read through 30 other posts and it’s now 1:30 AM.

                                            Please someone summarize this thread.

                                            Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                                            Daily Clean Installation Results:
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