ML
    • Recent
    • Categories
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    XenServer 7.0: clone USB (without removing)

    Scheduled Pinned Locked Moved IT Discussion
    xenserver 7.0usb cloningvirtualizationxenserver
    64 Posts 9 Posters 10.1k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • BRRABillB
      BRRABill @DustinB3403
      last edited by

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

      I tried using dd on my lab, from /sda to /sdb files were copied, but the drive wasn't bootable.

      I had to shutdown the host remove the drive and use dd on a separate linux system to create a working clone.

      This was the thread.

      https://www.mangolassi.it/topic/9425/cloning-xenserver-on-usb-or-sd/37

      BRRABillB 1 Reply Last reply Reply Quote 0
      • 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
                                            • 1
                                            • 2
                                            • 3
                                            • 4
                                            • 2 / 4
                                            • First post
                                              Last post