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    XenServer 7 has launched!

    IT Discussion
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    • Kelly
      Kelly last edited by

      It looks like /etc/centos-release isn't where that value is being pulled from. I edited the file and it didn't change the output of yum version.

      1 Reply Last reply Reply Quote 0
      • Kelly
        Kelly last edited by

        Well, I just went in and replaced every $releasever with 7 in the .repo files. I can now access yum. Now to figure out how to get my hands on drbd...

        1 Reply Last reply Reply Quote 1
        • BRRABill
          BRRABill @olivier last edited by

          @olivier said in XenServer 7 has launched!:

          Using XO VM replication between 2 XS 7 hosts, initial copy of a 61GB VM in 8 minutes:

          0_1464216106445_fast_replication.png

          This is on a classic GB link.

          Clearly, previous bottlenecks weren't in XO.

          I have not seen anything like this on importing and exporting yet.

          I am still getting super slow speeds.

          Once I get all the VMs set up on the same machine, I will do some official testing.

          1 Reply Last reply Reply Quote 0
          • olivier
            olivier last edited by

            So you'll have to find the super slow bottleneck 😛

            My lab is pretty simple, if you need more info on how I achieved those speeds, tell me 🙂

            BRRABill 1 Reply Last reply Reply Quote 1
            • BRRABill
              BRRABill @olivier last edited by

              @olivier said

              My lab is pretty simple, if you need more info on how I achieved those speeds, tell me 🙂

              Well, in theory if I have two machines on a 1GB link, I should see speeds similar to yours, right?

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              • olivier
                olivier last edited by

                There is no magic: you need to have enough write speed on the target and read speed on the source.

                BRRABill Dashrender 2 Replies Last reply Reply Quote 1
                • BRRABill
                  BRRABill @olivier last edited by

                  @olivier said

                  There is no magic: you need to have enough write speed on the target and read speed on the source.

                  Yeah, I'll set up some tests once I am done getting everything set back up.

                  Right now it's clipping along at 5MB/s so it's taking forever.....

                  travisdh1 1 Reply Last reply Reply Quote 0
                  • Dashrender
                    Dashrender @olivier last edited by

                    @olivier said in XenServer 7 has launched!:

                    There is no magic: you need to have enough write speed on the target and read speed on the source.

                    What is the sustained write speed on a SATA drive? I'm guessing it must be a lot lower than 120 MB/s??

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

                      Depends of the drive, roughly between 40 and 60 MiB/s

                      edit: for a HDD

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                      • travisdh1
                        travisdh1 @BRRABill last edited by

                        @BRRABill said in XenServer 7 has launched!:

                        @olivier said

                        There is no magic: you need to have enough write speed on the target and read speed on the source.

                        Yeah, I'll set up some tests once I am done getting everything set back up.

                        Right now it's clipping along at 5MB/s so it's taking forever.....

                        Something is wrong with that picture. Even older SATA drives can hit 100MB/s. 100MB network connection could be topping out at that.

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

                          For me, this is SSD going to SSD.

                          Granted, this current import is from my 100mbps desktop connection, but still, 40mbps is slow.

                          travisdh1 scottalanmiller 2 Replies Last reply Reply Quote 0
                          • BRRABill
                            BRRABill last edited by

                            I'm importing a 40GB VM, and it's already been almost 2 hours, which is about what 40GB takes to transfer at 5MB/s.

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

                              @BRRABill said in XenServer 7 has launched!:

                              For me, this is SSD going to SSD.

                              Granted, this current import is from my 100mbps desktop connection, but still, 40mbps is slow.

                              That's within reason for a 100Mb network connection. The best I've seen out of a 100Mb network is 9MB/sec, that's on a network with zero other traffic.

                              BRRABill scottalanmiller 2 Replies Last reply Reply Quote 0
                              • travisdh1
                                travisdh1 @BRRABill last edited by

                                @BRRABill 1Gb networks are much nicer, and not any more expensive anymore. For future consideration.

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

                                  @travisdh1 said

                                  That's within reason for a 100Mb network connection. The best I've seen out of a 100Mb network is 9MB/sec, that's on a network with zero other traffic.

                                  Yeah, I am really just chatting at this point.

                                  I'll set up two VMs on separate segments and test straight throughput and then the export/copy ... everything else.

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

                                    @travisdh1 said in XenServer 7 has launched!:

                                    @BRRABill 1Gb networks are much nicer, and not any more expensive anymore. For future consideration.

                                    Yeah, it's a long story. 🙂

                                    The servers are all connected via 1GB, though.

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

                                      @BRRABill said in XenServer 7 has launched!:

                                      @travisdh1 said in XenServer 7 has launched!:

                                      @BRRABill 1Gb networks are much nicer, and not any more expensive anymore. For future consideration.

                                      Yeah, it's a long story. 🙂

                                      The servers are all connected via 1GB, though.

                                      Assuming we both make it to Mangocon, maybe we can trade war stories 😄

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

                                        @travisdh1 said

                                        Assuming we both make it to Mangocon, maybe we can trade war stories 😄

                                        Sounds good!

                                        I mean, 100Mbps is fine for 99% of what we do. It's just these VM transfers are a bear.

                                        But, the new me with my fancy ML knowledge now just sets up a Linux instance and does the import/export on the 1GB segment. Viva la open source!

                                        Of course THAT was also slow, which has me wondering... But as I said, nothing firm tested yet so we shall see.

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

                                          @Dashrender said in XenServer 7 has launched!:

                                          @olivier said in XenServer 7 has launched!:

                                          There is no magic: you need to have enough write speed on the target and read speed on the source.

                                          What is the sustained write speed on a SATA drive? I'm guessing it must be a lot lower than 120 MB/s??

                                          Way, way slower.

                                          1 Reply Last reply Reply Quote 0
                                          • scottalanmiller
                                            scottalanmiller @travisdh1 last edited by

                                            @travisdh1 said in XenServer 7 has launched!:

                                            @BRRABill said in XenServer 7 has launched!:

                                            @olivier said

                                            There is no magic: you need to have enough write speed on the target and read speed on the source.

                                            Yeah, I'll set up some tests once I am done getting everything set back up.

                                            Right now it's clipping along at 5MB/s so it's taking forever.....

                                            Something is wrong with that picture. Even older SATA drives can hit 100MB/s. 100MB network connection could be topping out at that.

                                            Can hit, but not sustain. Generally can't hit for very long at all.

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