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    Testing ZFS with XCP-ng

    Scheduled Pinned Locked Moved Development
    80 Posts 10 Posters 43.2k Views 3 Watching
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    • nraynaudN Offline
      nraynaud XCP-ng Team @borzel
      last edited by

      @borzel good catch, it's another O_DIRECT issue.

      1 Reply Last reply Reply Quote 0
      • nraynaudN Offline
        nraynaud XCP-ng Team
        last edited by

        @borzel I am struggling to match the error lines in your log with a source code, can you tell me what version of vhd-tool you have installed please ? (yum info vhd-tool)

        borzelB 1 Reply Last reply Reply Quote 0
        • borzelB Offline
          borzel XCP-ng Center Team @nraynaud
          last edited by borzel

          @nraynaud

          # yum info vhd-tool
          Loaded plugins: fastestmirror
          Loading mirror speeds from cached hostfile
          Installed Packages
          Name        : vhd-tool
          Arch        : x86_64
          Version     : 0.20.0
          Release     : 4.2.xcp.el7.centos.extras
          Size        : 40 M
          Repo        : installed
          From repo   : xcp-ng-extras
          Summary     : Command-line tools for manipulating and
                      : streaming .vhd format files
          URL         : https://github.com/xapi-project/vhd-tool
          License     : LGPL+linking exception
          Description : Simple command-line tools for manipulating an
                      : streaming .vhd format file.
          
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          • nraynaudN Offline
            nraynaud XCP-ng Team
            last edited by

            Thanks,
            I have found a suspected O_DIRECT here, the solution won't come quickly.

            borzelB 1 Reply Last reply Reply Quote 0
            • S Offline
              SeyedGH
              last edited by

              Does this issue also have a role if you run glusterfs on top of zfs?
              Or is it just directly on zfs.

              Because i would want to runs glusterfs on top of zfs on a spearate server, and use glusterfs driver to connect to it.

              Do i also have this issue then?

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              • borzelB Offline
                borzel XCP-ng Center Team @nraynaud
                last edited by

                @nraynaud I just tested with an up-to-date XCP-ng 7.5 host, same failure

                # yum info vhd-tool
                Loaded plugins: fastestmirror
                Loading mirror speeds from cached hostfile
                Installed Packages
                Name        : vhd-tool
                Arch        : x86_64
                Version     : 0.20.0
                Release     : 4.3.xcp.el7.centos
                Size        : 40 M
                Repo        : installed
                From repo   : xcp-ng-updates
                Summary     : Command-line tools for manipulating and streaming .vhd format files
                URL         : https://github.com/xapi-project/vhd-tool
                License     : LGPL+linking exception
                Description : Simple command-line tools for manipulating and streaming .vhd format file.
                
                1 Reply Last reply Reply Quote 0
                • nraynaudN Offline
                  nraynaud XCP-ng Team
                  last edited by

                  I am till on the issue, the subject is way deeper than expected.

                  borzelB 1 Reply Last reply Reply Quote 0
                  • borzelB Offline
                    borzel XCP-ng Center Team @nraynaud
                    last edited by

                    @nraynaud take your time, no rush

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                    • borzelB Offline
                      borzel XCP-ng Center Team
                      last edited by

                      Just added the setup part to https://github.com/xcp-ng/xcp/wiki/ZFS-on-XCP-ng-7.5-and-later#setup

                      1 Reply Last reply Reply Quote 0
                      • stormiS Offline
                        stormi Vates 🪐 XCP-ng Team
                        last edited by

                        Thanks @borzel

                        1 Reply Last reply Reply Quote 0
                        • D Offline
                          dvdhngs
                          last edited by

                          Hello everybody! Newbie here, just 24h of xcp use, I was trying set Raid 10, but xcp only support Raid 1, so I'm trying now to set raidz, like on the document, I'm using 4 disks (500gb each), but I want to do Raid on this 4 disks (sda,sdb,sdc,sdd), so I can't? Need to be 6 disks? 2 raid 1 with xcp, and 4 raidz for other things?

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                          • olivierlambertO Offline
                            olivierlambert Vates 🪐 Co-Founder CEO
                            last edited by

                            Hi,

                            There is 2 different things:

                            • soft RAID 1 support during install, using mdadm (the standard Linux software RAID mechanism)
                            • ZFS support for storage repositories (where you store your VM disks)

                            Regarding your use case, it depends. You can choose to install XCP-ng system without RAID and use only one disk, and the rest for ZFS SR. Or RAID1 for XCP-ng system, and the left disks for ZFS.

                            D 1 Reply Last reply Reply Quote 1
                            • D Offline
                              dvdhngs @olivierlambert
                              last edited by

                              @olivierlambert
                              Just to solve a doubt.... there is no way to install xcp-ng on software RAID 10, right?

                              borzelB 1 Reply Last reply Reply Quote 0
                              • borzelB Offline
                                borzel XCP-ng Center Team @dvdhngs
                                last edited by

                                @dvdhngs

                                install onto (mdadm/ZFS) RAID 10: no

                                to use (mdadm/ZFS) RAID 10 as SR: yes, of course!

                                1 Reply Last reply Reply Quote 1
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