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    Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Kernel Offset: disabled

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    • b.nelsonB
      b.nelson @Tom Elliott
      last edited by Tom Elliott

      @Tom-Elliott

      root@FOG:/home/user# sha512sum /var/www/fog/service/ipxe/bzImage{,32}
      c75abc75be06a219920c5c29809436ba66f9d1b5f56af757ee8a28393620e83d0b44f3f8bb582b4e8ad01c4c3e247fde99916d06ff3374631ac3453e042dc3f8  /var/www/fog/service/ipxe/bzImage
      0e465ea8c7607377d5f023c5be9838392ba3ef3ab0c793125cde4d5d1cf40c60dc17518be7d6c71ef65e8b261a3d0fce3fa380f6e07bbcaa0fbf59bd72d59b4f  /var/www/fog/service/ipxe/bzImage32
      
      Tom ElliottT 1 Reply Last reply Reply Quote 0
      • Tom ElliottT
        Tom Elliott @b.nelson
        last edited by

        When you ran the FOG Installer, did you choose to have it install DHCP?

        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

        b.nelsonB 1 Reply Last reply Reply Quote 0
        • b.nelsonB
          b.nelson @Tom Elliott
          last edited by

          @Tom-Elliott no

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

            @b.nelson Is there a windows machine somewhere on the vlan handing out DHCP addresses then?

            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

            b.nelsonB 1 Reply Last reply Reply Quote 0
            • b.nelsonB
              b.nelson @Tom Elliott
              last edited by

              @Tom-Elliott In the VLAN there is no DHCP the server is with static IP.

              The windows that we want to clone are in another VLAN with DHCP.

              Tom ElliottT george1421G 2 Replies Last reply Reply Quote 0
              • Tom ElliottT
                Tom Elliott @b.nelson
                last edited by

                @b.nelson and the “remote” systems are on the “other” vlan when you’re attempting to capture?

                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

                b.nelsonB 1 Reply Last reply Reply Quote 0
                • Tom ElliottT
                  Tom Elliott
                  last edited by

                  Essentially, the thing Giving out DHCP is also giving the bootfile and where to boot from.

                  This “other” vlan is where you need to look at the bootfile it’s handing out.

                  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

                  1 Reply Last reply Reply Quote 0
                  • george1421G
                    george1421 Moderator @b.nelson
                    last edited by

                    @b.nelson said in Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Kernel Offset: disabled:

                    @george1421 There is a VLAN dedicated to the servers which is handled by static IP.

                    No, we did not have fog in the past.

                    So then for your pxe booting clients are they on the same vlan as your fog server?

                    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!

                    b.nelsonB 1 Reply Last reply Reply Quote 0
                    • b.nelsonB
                      b.nelson @george1421
                      last edited by

                      @george1421 si

                      george1421G 1 Reply Last reply Reply Quote 0
                      • george1421G
                        george1421 Moderator @b.nelson
                        last edited by

                        @b.nelson said in Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Kernel Offset: disabled:

                        The windows that we want to clone are in another VLAN with DHCP.

                        On this vlan you are using a router for dhcp?

                        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!

                        1 Reply Last reply Reply Quote 0
                        • george1421G
                          george1421 Moderator @b.nelson
                          last edited by

                          @b.nelson said in Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Kernel Offset: disabled:

                          @george1421 si

                          Just to be sure fog server is on the same subnet as your pxe booting clients? If that is the case we can use the FOG server to tell us what is going on.

                          What you have is very strange and should not be working this way.

                          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!

                          george1421G 1 Reply Last reply Reply Quote 0
                          • b.nelsonB
                            b.nelson @Tom Elliott
                            last edited by

                            @Tom-Elliott yes

                            1 Reply Last reply Reply Quote 0
                            • george1421G
                              george1421 Moderator @george1421
                              last edited by

                              @george1421 I make a tutorial a while ago that might help here. https://forums.fogproject.org/topic/9673/when-dhcp-pxe-booting-process-goes-bad-and-you-have-no-clue

                              We will use tcpdump to capture a client pxe booting to the FOG menu. Once at FOG menu stop tcpdump and post the pcap file to the forum. This will tell us all the questions we will ask.

                              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!

                              b.nelsonB 1 Reply Last reply Reply Quote 0
                              • C
                                callcenter
                                last edited by

                                Dear All,
                                New user/taken over 1.3.8 project from coworker.
                                I am having the same issue after upgrading to 1.4.0 today. Not sure where to change pxelinux.0 reference. Using windows as DHCP with options set. Any help would be great!!

                                george1421G 1 Reply Last reply Reply Quote 0
                                • george1421G
                                  george1421 Moderator @callcenter
                                  last edited by

                                  @callcenter If I remember correctly the target computer was getting pxelinux.0 from some unknown place.

                                  If the target computer (that you are pxe booting) and fog server is on the same subnet then we can use the fog server to help diagnose what is really going on. In my last post I provided a link to a tutorial on how to setup a packet capture of the pxe booting process. That pcap file will tell us what is going on.

                                  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!

                                  1 Reply Last reply Reply Quote 0
                                  • C
                                    callcenter
                                    last edited by

                                    It was the windows DHCP scopes having the old 67 option in them instead of the new undionly.kpxe program. updated all my scopes and tested-ok not using the main server options since my wifi and telco devices do not need PXE. I saw others make mention of doing that instead of every scope having the references. In my environment it just doesn’t make sense.

                                    thanks for the help.

                                    george1421G C 2 Replies Last reply Reply Quote 0
                                    • george1421G
                                      george1421 Moderator @callcenter
                                      last edited by

                                      @callcenter So are we good to solve this issue?

                                      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!

                                      b.nelsonB 1 Reply Last reply Reply Quote 0
                                      • b.nelsonB
                                        b.nelson @george1421
                                        last edited by

                                        @george1421 This appears to me

                                        root@FOG:/home/user# tcpdump -w output.pcap port 67 or port 69 or port 4011
                                        tcpdump: listening on enp0s7, link-type EN10MB (Ethernet), capture size 262144 bytes
                                        ^C0 packets captured
                                        1 packet received by filter
                                        0 packets dropped by kernel
                                        root@FOG:/home/user#
                                        
                                        1 Reply Last reply Reply Quote 0
                                        • b.nelsonB
                                          b.nelson @george1421
                                          last edited by

                                          @george1421 ```
                                          tcpdump: listening on enp0s7, link-type EN10MB (Ethernet), capture size 262144 bytes
                                          ^C6 packets captured
                                          7 packets received by filter
                                          0 packets dropped by kernel
                                          root@FOG:/home/user#

                                          george1421G 1 Reply Last reply Reply Quote 0
                                          • george1421G
                                            george1421 Moderator @b.nelson
                                            last edited by george1421

                                            @b.nelson What I was asking for was for you to attach the output.pcap file to a forum post. I’ll take a look at it to see what is going down your wire.

                                            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!

                                            1 Reply Last reply Reply Quote 0
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