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    So Xen Server gave me an error / what do i do

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    • DustinB3403D
      DustinB3403 @krisleslie
      last edited by

      @krisleslie said in So Xen Server gave me an error / what do i do:

      @DustinB3403 well buddy what’s a suggested setup?

      OBR10 with the hypervisor installed on a partition of that OBR10.

      Assuming of course Winchester drives.

      1 1 Reply Last reply Reply Quote 1
      • K
        krisleslie @IRJ
        last edited by

        @IRJ also if you think about that if the read and write speeds are slow that could take quite a while to accomplish.

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        • 1
          1337 @DustinB3403
          last edited by 1337

          @DustinB3403 said in So Xen Server gave me an error / what do i do:

          @krisleslie said in So Xen Server gave me an error / what do i do:

          @DustinB3403 well buddy what’s a suggested setup?

          OBR10 with the hypervisor installed on a partition of that OBR10.

          Assuming of course Winchester drives.

          OBR10 makes sense with spinning rust but in this day and age it feels like you have to have a good reason to use spinners.

          RAID 1 with larger drives are more reliable than RAID 10 and single drives comes in up to 16TB sizes. SSDs are much, much faster than spinners so any workload that needs speed should run on SSDs.

          We put one RAID1 with SSDs and if needed another RAID1 with spinning rust on our hosts. Then you get the best of both worlds - for the least amount of money that is.

          scottalanmillerS 2 Replies Last reply Reply Quote 0
          • scottalanmillerS
            scottalanmiller @1337
            last edited by

            @Pete-S said in So Xen Server gave me an error / what do i do:

            RAID 1 with larger drives are more reliable than RAID 10

            RAID 1 with larger drives are more reliable than RAID 10

            No need for the qualification.

            1 1 Reply Last reply Reply Quote 0
            • scottalanmillerS
              scottalanmiller @1337
              last edited by

              @Pete-S said in So Xen Server gave me an error / what do i do:

              We put one RAID1 with SSDs and if needed another RAID1 with spinning rust on our hosts. Then you get the best of both worlds - for the least amount of money that is.

              Unless you need more capacity, then commonly RAID 1 with SSD and RAID 6 or 10 with spinners.

              1 Reply Last reply Reply Quote 2
              • JaredBuschJ
                JaredBusch
                last edited by

                With all hypervisors, I drop a small standard SATA drive in it and install the hypervisor there.

                Then I add the RAID array separately.

                Sometime I’ll have a R1 for that drive, often I will not. But, I make sure to have the metadata saved on the main RAID array, as well as backed up.

                1 Reply Last reply Reply Quote 3
                • 1
                  1337 @scottalanmiller
                  last edited by

                  @scottalanmiller said in So Xen Server gave me an error / what do i do:

                  @Pete-S said in So Xen Server gave me an error / what do i do:

                  RAID 1 with larger drives are more reliable than RAID 10

                  RAID 1 with larger drives are more reliable than RAID 10

                  No need for the qualification.

                  Thanks, but it wasn't qualification as such. Just pointing out the use case of needing X amount of storage and then buying four X/2 sized drives to get to RAID10, instead of two X sized drives and running RAID 1.

                  1 Reply Last reply Reply Quote 0
                  • K
                    krisleslie
                    last edited by krisleslie

                    Morning fellas, following back up with everyone. I have successfully updated to XCP-NG 8.0 release for the hypervisor on my affected server. I have swapped out the flash drive (still don't think it had a memory issue, just think there was some corruption of the file system) and used a brand new flash drive (128 Gb as the location I install the hypervisor to. I was able to get back to my data on the SR.

                    So to mitigate this from happening again, I have cloned the flash drive, backed up the metadata properly in 2 locations and confirmed my backups are running fine. I have also moved the logs to a Linux logging server.

                    What I will say is that I wasted 3 hours because the commands I had to run had only 1 critical mistake the guides below didn't explain. Other than that, things are getting back to normal. I thank everyone who participated in helping me and I appreciate you.

                    Resources:

                    https://support.citrix.com/article/CTX136342#Restoring the Mappings
                    https://support.citrix.com/article/CTX136342

                    K 1 Reply Last reply Reply Quote 1
                    • K
                      krisleslie @krisleslie
                      last edited by

                      So I do have one question because I did actually backup the metadata (originally). It was backed up to the local drive (aka the Flash Drive). How can I take a peek at that data? I tried putting the usb drive into my windows 10 pc and that yield no results. I see about 5-7 partitions.

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

                        @krisleslie said in So Xen Server gave me an error / what do i do:

                        So I do have one question because I did actually backup the metadata (originally). It was backed up to the local drive (aka the Flash Drive). How can I take a peek at that data? I tried putting the usb drive into my windows 10 pc and that yield no results. I see about 5-7 partitions.

                        What format are the partitions? I don't think Windows can read most Linux partitions by default.
                        If you use a Linux based machine, you can likely mount those partitions and see the data.

                        K 1 Reply Last reply Reply Quote 1
                        • K
                          krisleslie @Dashrender
                          last edited by

                          @Dashrender smart idea I will try that. I think your right they are remnants of a previous Linux install.

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