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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 62.9k Views
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    • 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
                            • RomoR
                              Romo
                              last edited by

                              What is the ouput for:
                              cat /dev/md/md-device-map

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

                                cat /dev/md/md-device-map
                                cat: /dev/md/md-device-map: No such file or directory
                                
                                RomoR 1 Reply Last reply Reply Quote 0
                                • RomoR
                                  Romo @DustinB3403
                                  last edited by

                                  @DustinB3403
                                  ls /dev/ | grep md

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

                                    0_1447096524174_2015-11-09_14-15-08.png

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

                                      @DustinB3403 can you please show us the output of your mdadm.conf file, last time I believe it was cut off because the UUID's dont show.

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

                                        @Romo 0_1447098513375_2015-11-09_14-48-15.png

                                        There is now a new record (3rd line)

                                        1 Reply Last reply Reply Quote 0
                                        • Reid CooperR
                                          Reid Cooper
                                          last edited by

                                          That can't be right. I'm sure only one of those lines is supposed to be there.

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

                                            Quite strange that the first two entries don't have a UUID set, mdadm needs the UUID set.

                                            We could try to manually edit the file, adding the UUID from the last entry into the first entry, and then removing entries 2 and 3.

                                            DustinB3403D 1 Reply Last reply Reply Quote 0
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