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    Building Out XenServer 6.5 with USB Boot and Software RAID 10

    Scheduled Pinned Locked Moved IT Discussion
    xenvirtualizationxenserverxenserver 6.5how to
    182 Posts 13 Posters 62.6k Views
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    • DustinB3403D
      DustinB3403
      last edited by

      So with the above 3 pictures and the Array missing.

      I'd obviously have to rebuild the array, and remap items. Additionally, I'll have to recreate my "backup" USB (which isn't a huge deal)

      1 Reply Last reply Reply Quote 0
      • RomoR
        Romo @DustinB3403
        last edited by

        @DustinB3403 can you run

        mdadm --examine --scan

        1 Reply Last reply Reply Quote 2
        • scottalanmillerS
          scottalanmiller
          last edited by

          We need to find the missing array before we can do anything else. As @romo mentioned we need to scan and see if the array is out there somewhere.

          1 Reply Last reply Reply Quote 0
          • DustinB3403D
            DustinB3403
            last edited by

            0_1447092654693_2015-11-09_13-10-40.png

            RomoR 1 Reply Last reply Reply Quote 0
            • DustinB3403D
              DustinB3403
              last edited by

              Running

                  mount md0
              

              results in

                 mount: mount point /mnt/raid10 does not exist
              
              1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller
                last edited by

                mkdir /mnt/raid10

                1 Reply Last reply Reply Quote 0
                • RomoR
                  Romo @DustinB3403
                  last edited by

                  @DustinB3403 what is in your mdadm.conf?

                  DustinB3403D 1 Reply Last reply Reply Quote 1
                  • DustinB3403D
                    DustinB3403
                    last edited by

                    Can't find

                        md0 in /etc/fstab or /etc/mtab
                    
                    scottalanmillerS 1 Reply Last reply Reply Quote 0
                    • scottalanmillerS
                      scottalanmiller @DustinB3403
                      last edited by

                      @DustinB3403 said:

                      Can't find

                          md0 in /etc/fstab or /etc/mtab
                      

                      Should not be there, right?

                      DustinB3403D 1 Reply Last reply Reply Quote 0
                      • DustinB3403D
                        DustinB3403 @Romo
                        last edited by

                        @Romo said:

                        @DustinB3403 what is in your mdadm.conf?

                        0_1447093272983_2015-11-09_13-21-02.png

                        1 Reply Last reply Reply Quote 0
                        • DustinB3403D
                          DustinB3403 @scottalanmiller
                          last edited by

                          @scottalanmiller said:

                          @DustinB3403 said:

                          Can't find

                              md0 in /etc/fstab or /etc/mtab
                          

                          Should not be there, right?

                          I added an entry into fstab. It may have a typo...

                          1 Reply Last reply Reply Quote 0
                          • DustinB3403D
                            DustinB3403
                            last edited by

                            fstab

                            0_1447093339301_2015-11-09_13-22-06.png

                            1 Reply Last reply Reply Quote 0
                            • DustinB3403D
                              DustinB3403
                              last edited by

                              fstab corrected, entry reversed.

                                   mount raid10
                              mount: /mnt/raid10 is not a block device
                              
                              1 Reply Last reply Reply Quote 0
                              • RomoR
                                Romo
                                last edited by

                                Your could run

                                mdadm --examine --scan >> /etc/mdadm/mdadm.conf

                                To recreate the conf and see if it fixes the problem. /dev/md/0 should be a symbolic link to /dev/md0

                                DustinB3403D 1 Reply Last reply Reply Quote 0
                                • DustinB3403D
                                  DustinB3403 @Romo
                                  last edited by

                                  @Romo Same response when reexamining the disks. this is for both

                                  mount /mnt/raid10 && mount /dev/md10
                                  

                                  0_1447093679739_2015-11-09_13-27-40.png

                                  1 Reply Last reply Reply Quote 0
                                  • dafyreD
                                    dafyre
                                    last edited by

                                    mount /dev/md0 /mnt/raid10 ?

                                    1 Reply Last reply Reply Quote 1
                                    • scottalanmillerS
                                      scottalanmiller
                                      last edited by

                                      /dev/md0 not md10

                                      1 Reply Last reply Reply Quote 0
                                      • scottalanmillerS
                                        scottalanmiller
                                        last edited by

                                        Using RAID 10 in names anywhere is very confusing and hard to read. I think several of these issues are partially stemming just from poor naming conventions. Name mount points by purpose, not technology.

                                        1 Reply Last reply Reply Quote 1
                                        • RomoR
                                          Romo
                                          last edited by

                                          You can't mount /dev/md0, because according to the mdadm --examine --scan ouput, the array, is at /dev/md/0

                                          StrongBadS 1 Reply Last reply Reply Quote 0
                                          • StrongBadS
                                            StrongBad @Romo
                                            last edited by

                                            @Romo said:

                                            You can't mount /dev/md0, because according to the mdadm --examine --scan ouput, the array, is at /dev/md/0

                                            Good eye, that was hard to see.

                                            1 Reply Last reply Reply Quote 0
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