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    Testing ZFS with XCP-ng

    Scheduled Pinned Locked Moved Development
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    • borzelB Offline
      borzel XCP-ng Center Team @stormi
      last edited by

      @stormi wiki issue is allready solved 😉

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

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

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        • 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

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                        • 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!

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