XCP-ng
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Server will not migrate VMs to enter maintenance mode

    Scheduled Pinned Locked Moved Management
    14 Posts 4 Posters 106 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • olivierlambertO
      olivierlambert Vates 🪐 Co-Founder CEO
      last edited by

      Hi,

      This means all VMs cannot be evacuated to another host because the other hosts cannot contains all the VMs in their own memory/RAM.

      DanpD P 2 Replies Last reply Reply Quote 0
      • DanpD
        Danp Vates 🪐 Pro Support Team @olivierlambert
        last edited by

        Could also be due to this -- https://github.com/xapi-project/xen-api/issues/4323

        olivierlambert created this issue in xapi-project/xen-api

        open Mysterious failure in HA with HOST_NOT_ENOUGH_FREE_MEMORY #4323

        1 Reply Last reply Reply Quote 0
        • olivierlambertO
          olivierlambert Vates 🪐 Co-Founder CEO
          last edited by

          If HA is enabled, yes.

          1 Reply Last reply Reply Quote 0
          • D
            DustinB
            last edited by

            In any scenario, the error message isn't clear and doesn't help to address the issue. As @Danp pointed to the issue created by @olivierlambert should at least better define the root issue.

            1 Reply Last reply Reply Quote 0
            • P
              pmcgrail @olivierlambert
              last edited by

              @olivierlambert said in Server will not migrate VMs to enter maintenance mode:

              host
              I have three hosts with 1.5 TB of Memory, I have 2 VMs running on the hosts using less then 10 GB of Ram, so memory is not the issue.

              I can manually migrate the VM and the host will go into maintenance mode.

              The error is bogus, the issue may be more related to the XO VM running on the host and the host fails to suspend the VMS on the host.

              1 Reply Last reply Reply Quote 0
              • olivierlambertO
                olivierlambert Vates 🪐 Co-Founder CEO
                last edited by

                The error is coming from XCP-ng (it's in all caps), not from XO.

                1 Reply Last reply Reply Quote 0
                • DanpD
                  Danp Vates 🪐 Pro Support Team
                  last edited by

                  Unsure why this detail wasn't included here, but his support ticket indicates that HA is enabled on the pool.

                  P 1 Reply Last reply Reply Quote 0
                  • P
                    pmcgrail @Danp
                    last edited by

                    @Danp OK, so here is the situation....

                    Manual Migrations work manually regardless of the VM HA state...

                    Auto-Migration fails if anything but Restart is selected for the HA Mode.

                    Cluster in HA, VMs in best effort HA mode - Memory Error is thrown
                    Cluster in HA, VMs in disabled HA mode - Memory Error is thrown
                    Cluster in HA, VMs in restart HA mode - No Memory Error is thrown

                    1 Reply Last reply Reply Quote 0
                    • olivierlambertO
                      olivierlambert Vates 🪐 Co-Founder CEO
                      last edited by

                      Last test: cluster without HA.

                      P 1 Reply Last reply Reply Quote 0
                      • P
                        pmcgrail @olivierlambert
                        last edited by

                        @olivierlambert
                        OK, so with both VMs set to Best Effort and HA disabled on the Pool the error does not occur.

                        If the pool is set to HA the VMs need to be set to Restart the error occurs

                        Only one setting works when the Pool in HA Mode, the VM Set to restart.

                        If I disable the HA Pool setting the VMs migrate as needed and no errors occurs regardless of the VMs HA Settings.

                        P 1 Reply Last reply Reply Quote 0
                        • P
                          pmcgrail @pmcgrail
                          last edited by

                          @pmcgrail said in Server will not migrate VMs to enter maintenance mode:

                          If the pool is set to HA the VMs need to be set to Restart the error occurs
                          If the pool is set to HA the VMs need to be set to Restart or the error occurs

                          1 Reply Last reply Reply Quote 0
                          • olivierlambertO
                            olivierlambert Vates 🪐 Co-Founder CEO
                            last edited by

                            So it's clearly https://github.com/xapi-project/xen-api/issues/4323 as @Danp suggested.

                            olivierlambert created this issue in xapi-project/xen-api

                            open Mysterious failure in HA with HOST_NOT_ENOUGH_FREE_MEMORY #4323

                            1 Reply Last reply Reply Quote 0
                            • olivierlambertO
                              olivierlambert Vates 🪐 Co-Founder CEO
                              last edited by olivierlambert

                              I just sent a precision upstream with your report @pmcgrail

                              1 Reply Last reply Reply Quote 0
                              • First post
                                Last post