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    Testing ZFS with XCP-ng

    Scheduled Pinned Locked Moved Development
    80 Posts 10 Posters 40.0k Views 3 Watching
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    • stormiS Offline
      stormi Vates 🪐 XCP-ng Team @borzel
      last edited by

      @borzel I'm not very familiar with github wikis, but I think you can do pull requests against the wiki.

      borzelB 1 Reply Last reply Reply Quote 0
      • 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.

          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?

                  1 Reply Last reply Reply Quote 0
                  • 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

                        1 Reply Last reply Reply Quote 0
                        • 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?

                              1 Reply Last reply Reply Quote 0
                              • 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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