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    XenServer 7.0: clone USB (without removing)

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    xenserver 7.0usb cloningvirtualizationxenserver
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    • BRRABillB
      BRRABill @BRRABill
      last edited by

      @scottalanmiller

      Said something about the partitioning layer being copied if you use /sda, but we never finished out that thread.

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

        @BRRABill said in XenServer 7.0: clone USB (without removing):

        @scottalanmiller said in XenServer 7.0: clone USB (without removing):

        @BRRABill said in XenServer 7.0: clone USB (without removing):

        I'm just saying it did not work.

        And I was just saying that it must not have been attempted given the error. Someone tried to dd something else instead of the USB stick.

        So, what command would you use to use dd to clone my running XS USB boot device?

        
        NAME                                                                                            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
        sda                                                                                               8:0    0 447.1G  0 disk
        └─XSLocalEXT--40f7cced--9587--c38f--e152--057e4ec2b2d0-40f7cced--9587--c38f--e152--057e4ec2b2d0 253:0    0 447.1G  0 lvm  /run/sr-mount/40f7cced-9587-c38f-e152-057e4ec2b2d0
        sdb                                                                                               8:16   0 149.1G  0 disk
        ├─sdb1                                                                                            8:17   0    18G  0 part /
        ├─sdb2                                                                                            8:18   0    18G  0 part
        ├─sdb3                                                                                            8:19   0   512M  0 part
        ├─sdb5                                                                                            8:21   0     4G  0 part /var/log
        └─sdb6                                                                                            8:22   0     1G  0 part [SWAP]
        sr0                                                                                              11:0    1  1024M  0 rom
        tda                                                                                             254:0    0   100G  0 disk
        loop0                                                                                             7:0    0  54.8M  1 loop /var/xen/xc-install
        [
        

        Which of those is the USB stick?

        BRRABillB 1 Reply Last reply Reply Quote 0
        • DashrenderD
          Dashrender
          last edited by

          can you dd it to a file, then dd that file to a new USB stick?

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

            @Dashrender said in XenServer 7.0: clone USB (without removing):

            can you dd it to a file, then dd that file to a new USB stick?

            Yes, dd to a file is how ISO files are made.

            1 Reply Last reply Reply Quote 0
            • BRRABillB
              BRRABill @scottalanmiller
              last edited by

              @scottalanmiller said in XenServer 7.0: clone USB (without removing):

              @BRRABill said in XenServer 7.0: clone USB (without removing):

              @scottalanmiller said in XenServer 7.0: clone USB (without removing):

              @BRRABill said in XenServer 7.0: clone USB (without removing):

              I'm just saying it did not work.

              And I was just saying that it must not have been attempted given the error. Someone tried to dd something else instead of the USB stick.

              So, what command would you use to use dd to clone my running XS USB boot device?

              
              NAME                                                                                            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
              sda                                                                                               8:0    0 447.1G  0 disk
              └─XSLocalEXT--40f7cced--9587--c38f--e152--057e4ec2b2d0-40f7cced--9587--c38f--e152--057e4ec2b2d0 253:0    0 447.1G  0 lvm  /run/sr-mount/40f7cced-9587-c38f-e152-057e4ec2b2d0
              sdb                                                                                               8:16   0 149.1G  0 disk
              ├─sdb1                                                                                            8:17   0    18G  0 part /
              ├─sdb2                                                                                            8:18   0    18G  0 part
              ├─sdb3                                                                                            8:19   0   512M  0 part
              ├─sdb5                                                                                            8:21   0     4G  0 part /var/log
              └─sdb6                                                                                            8:22   0     1G  0 part [SWAP]
              sr0                                                                                              11:0    1  1024M  0 rom
              tda                                                                                             254:0    0   100G  0 disk
              loop0                                                                                             7:0    0  54.8M  1 loop /var/xen/xc-install
              [
              

              Which of those is the USB stick?

              I figured you'd know!

              /sdb

              /sdb1 is the 18GB XenServer host control domain (dom0) partition
              /sdb2 is the backup parittion
              /sdb3 is the UEFI boot partition
              /sdb5 is the logs partition
              /sdb6 is the swap partition

              BRRABillB DustinB3403D 2 Replies Last reply Reply Quote 0
              • BRRABillB
                BRRABill @BRRABill
                last edited by

                @BRRABill said

                /sdb6 is the swap partition

                Would THIS also cause writing to the USB stick?

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

                  @BRRABill said in XenServer 7.0: clone USB (without removing):

                  @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                  @BRRABill said in XenServer 7.0: clone USB (without removing):

                  @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                  @BRRABill said in XenServer 7.0: clone USB (without removing):

                  I'm just saying it did not work.

                  And I was just saying that it must not have been attempted given the error. Someone tried to dd something else instead of the USB stick.

                  So, what command would you use to use dd to clone my running XS USB boot device?

                  
                  NAME                                                                                            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
                  sda                                                                                               8:0    0 447.1G  0 disk
                  └─XSLocalEXT--40f7cced--9587--c38f--e152--057e4ec2b2d0-40f7cced--9587--c38f--e152--057e4ec2b2d0 253:0    0 447.1G  0 lvm  /run/sr-mount/40f7cced-9587-c38f-e152-057e4ec2b2d0
                  sdb                                                                                               8:16   0 149.1G  0 disk
                  ├─sdb1                                                                                            8:17   0    18G  0 part /
                  ├─sdb2                                                                                            8:18   0    18G  0 part
                  ├─sdb3                                                                                            8:19   0   512M  0 part
                  ├─sdb5                                                                                            8:21   0     4G  0 part /var/log
                  └─sdb6                                                                                            8:22   0     1G  0 part [SWAP]
                  sr0                                                                                              11:0    1  1024M  0 rom
                  tda                                                                                             254:0    0   100G  0 disk
                  loop0                                                                                             7:0    0  54.8M  1 loop /var/xen/xc-install
                  [
                  

                  Which of those is the USB stick?

                  I figured you'd know!

                  /sdb

                  /sdb1 is the 18GB XenServer host control domain (dom0) partition
                  /sdb2 is the backup parittion
                  /sdb3 is the UEFI boot partition
                  /sdb5 is the logs partition
                  /sdb6 is the swap partition

                  You have to clone the entire drive though, you can't just pick and chose. Otherwise it's not cloning a working, bootable drive, just a partition on the drive.

                  BRRABillB 1 Reply Last reply Reply Quote 0
                  • BRRABillB
                    BRRABill @DustinB3403
                    last edited by

                    @DustinB3403 said in XenServer 7.0: clone USB (without removing):

                    @BRRABill said in XenServer 7.0: clone USB (without removing):

                    @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                    @BRRABill said in XenServer 7.0: clone USB (without removing):

                    @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                    @BRRABill said in XenServer 7.0: clone USB (without removing):

                    I'm just saying it did not work.

                    And I was just saying that it must not have been attempted given the error. Someone tried to dd something else instead of the USB stick.

                    So, what command would you use to use dd to clone my running XS USB boot device?

                    
                    NAME                                                                                            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
                    sda                                                                                               8:0    0 447.1G  0 disk
                    └─XSLocalEXT--40f7cced--9587--c38f--e152--057e4ec2b2d0-40f7cced--9587--c38f--e152--057e4ec2b2d0 253:0    0 447.1G  0 lvm  /run/sr-mount/40f7cced-9587-c38f-e152-057e4ec2b2d0
                    sdb                                                                                               8:16   0 149.1G  0 disk
                    ├─sdb1                                                                                            8:17   0    18G  0 part /
                    ├─sdb2                                                                                            8:18   0    18G  0 part
                    ├─sdb3                                                                                            8:19   0   512M  0 part
                    ├─sdb5                                                                                            8:21   0     4G  0 part /var/log
                    └─sdb6                                                                                            8:22   0     1G  0 part [SWAP]
                    sr0                                                                                              11:0    1  1024M  0 rom
                    tda                                                                                             254:0    0   100G  0 disk
                    loop0                                                                                             7:0    0  54.8M  1 loop /var/xen/xc-install
                    [
                    

                    Which of those is the USB stick?

                    I figured you'd know!

                    /sdb

                    /sdb1 is the 18GB XenServer host control domain (dom0) partition
                    /sdb2 is the backup parittion
                    /sdb3 is the UEFI boot partition
                    /sdb5 is the logs partition
                    /sdb6 is the swap partition

                    You have to clone the entire drive though, you can't just pick and chose. Otherwise it's not cloning a working, bootable drive, just a partition on the drive.

                    That's what I thought, but @scottalanmiller said that also copies the partitioning scheme. Which I thought you would want, but it sounded negative.

                    1 Reply Last reply Reply Quote 0
                    • BRRABillB
                      BRRABill
                      last edited by

                      @scottalanmiller

                      Can we pick this discussion back up?

                      Maybe explain what you meant by:
                      "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

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

                        @BRRABill said in XenServer 7.0: clone USB (without removing):

                        @scottalanmiller

                        Can we pick this discussion back up?

                        Maybe explain what you meant by:
                        "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                        Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                        BRRABillB 1 Reply Last reply Reply Quote 0
                        • BRRABillB
                          BRRABill @scottalanmiller
                          last edited by

                          @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                          @BRRABill said in XenServer 7.0: clone USB (without removing):

                          @scottalanmiller

                          Can we pick this discussion back up?

                          Maybe explain what you meant by:
                          "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                          Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                          So...

                          dd /dev/sda /dev/sdb

                          would be what we are looking for to clone the entire USB device to anotehr blank one to allow it to be used for DR purposes?

                          scottalanmillerS travisdh1T 2 Replies Last reply Reply Quote 1
                          • scottalanmillerS
                            scottalanmiller @BRRABill
                            last edited by

                            @BRRABill said in XenServer 7.0: clone USB (without removing):

                            @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                            @BRRABill said in XenServer 7.0: clone USB (without removing):

                            @scottalanmiller

                            Can we pick this discussion back up?

                            Maybe explain what you meant by:
                            "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                            Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                            So...

                            dd /dev/sda /dev/sdb

                            would be what we are looking for to clone the entire USB device to anotehr blank one to allow it to be used for DR purposes?

                            Correct

                            BRRABillB 1 Reply Last reply Reply Quote 0
                            • travisdh1T
                              travisdh1 @BRRABill
                              last edited by

                              @BRRABill said in XenServer 7.0: clone USB (without removing):

                              @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                              @BRRABill said in XenServer 7.0: clone USB (without removing):

                              @scottalanmiller

                              Can we pick this discussion back up?

                              Maybe explain what you meant by:
                              "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                              Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                              So...

                              dd /dev/sda /dev/sdb

                              would be what we are looking for to clone the entire USB device to anotehr blank one to allow it to be used for DR purposes?

                              Almost. Might want to specify block size to copy to speed things up, but that's all that's required. To copy sdb to sda...

                              dd if=/dev/sdb of=/dev/sda bs=512k
                              
                              stacksofplatesS 1 Reply Last reply Reply Quote 1
                              • stacksofplatesS
                                stacksofplates @travisdh1
                                last edited by

                                @travisdh1 said in XenServer 7.0: clone USB (without removing):

                                @BRRABill said in XenServer 7.0: clone USB (without removing):

                                @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                                @BRRABill said in XenServer 7.0: clone USB (without removing):

                                @scottalanmiller

                                Can we pick this discussion back up?

                                Maybe explain what you meant by:
                                "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                                Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                                So...

                                dd /dev/sda /dev/sdb

                                would be what we are looking for to clone the entire USB device to anotehr blank one to allow it to be used for DR purposes?

                                Almost. Might want to specify block size to copy to speed things up, but that's all that's required. To copy sdb to sda...

                                dd if=/dev/sdb of=/dev/sda bs=512k
                                

                                You're conservative lol. I usually do 4M

                                travisdh1T 1 Reply Last reply Reply Quote 1
                                • travisdh1T
                                  travisdh1 @stacksofplates
                                  last edited by

                                  @stacksofplates said in XenServer 7.0: clone USB (without removing):

                                  @travisdh1 said in XenServer 7.0: clone USB (without removing):

                                  @BRRABill said in XenServer 7.0: clone USB (without removing):

                                  @scottalanmiller said in XenServer 7.0: clone USB (without removing):

                                  @BRRABill said in XenServer 7.0: clone USB (without removing):

                                  @scottalanmiller

                                  Can we pick this discussion back up?

                                  Maybe explain what you meant by:
                                  "You have to copy what there is to where you want it. If the filesystem is on /dev/sda1 you don't want /dev/sda or you are copying the partitioning layer with it."

                                  Correct. /dev/sda1 is a single partition. /dev/sda is a full device. If you dd /dev/sda, you are getting the entire device, including the partition table. If you dd /dev/sda1 you are only getting the contents of the one partition.

                                  So...

                                  dd /dev/sda /dev/sdb

                                  would be what we are looking for to clone the entire USB device to anotehr blank one to allow it to be used for DR purposes?

                                  Almost. Might want to specify block size to copy to speed things up, but that's all that's required. To copy sdb to sda...

                                  dd if=/dev/sdb of=/dev/sda bs=512k
                                  

                                  You're conservative lol. I usually do 4M

                                  I like using the same block size as the drives use internally, so either 512k or 4M.

                                  1 Reply Last reply Reply Quote 1
                                  • BRRABillB
                                    BRRABill
                                    last edited by

                                    OK, now that we have that established ... should that work on a running boot device?

                                    1 Reply Last reply Reply Quote 0
                                    • JaredBuschJ
                                      JaredBusch
                                      last edited by

                                      What I want to know is WTF are you all trying to do this for in the first place.

                                      No one cares about cloning VMWare or Hyper-V boot partitions. You just reinstall and attach manually in the even of a complete failure.

                                      FATeknollogeeF BRRABillB 2 Replies Last reply Reply Quote 0
                                      • FATeknollogeeF
                                        FATeknollogee @JaredBusch
                                        last edited by

                                        @JaredBusch said in XenServer 7.0: clone USB (without removing):

                                        What I want to know is WTF are you all trying to do this for in the first place.

                                        No one cares about cloning VMWare or Hyper-V boot partitions. You just reinstall and attach manually in the even of a complete failure.

                                        Isn't all the VM metadata (aka config) on the USB stick?

                                        JaredBuschJ 1 Reply Last reply Reply Quote 0
                                        • JaredBuschJ
                                          JaredBusch @FATeknollogee
                                          last edited by

                                          @FATeknollogee said in XenServer 7.0: clone USB (without removing):

                                          @JaredBusch said in XenServer 7.0: clone USB (without removing):

                                          What I want to know is WTF are you all trying to do this for in the first place.

                                          No one cares about cloning VMWare or Hyper-V boot partitions. You just reinstall and attach manually in the even of a complete failure.

                                          Isn't all the VM metadata (aka config) on the USB stick?

                                          Then there should be a backup process for that so you can just reattach.

                                          FATeknollogeeF 1 Reply Last reply Reply Quote 0
                                          • FATeknollogeeF
                                            FATeknollogee @JaredBusch
                                            last edited by FATeknollogee

                                            @JaredBusch said in XenServer 7.0: clone USB (without removing):

                                            @FATeknollogee said in XenServer 7.0: clone USB (without removing):

                                            @JaredBusch said in XenServer 7.0: clone USB (without removing):

                                            What I want to know is WTF are you all trying to do this for in the first place.

                                            No one cares about cloning VMWare or Hyper-V boot partitions. You just reinstall and attach manually in the even of a complete failure.

                                            Isn't all the VM metadata (aka config) on the USB stick?

                                            Then there should be a backup process for that so you can just reattach.

                                            I thinks that's what this whole process is attempting to accomplish.
                                            I do agree with you, this should all have been "baked in" from the get go..

                                            1 Reply Last reply Reply Quote 0
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