XCP-ng
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login
    1. Home
    2. Popular
    Log in to post
    • All Time
    • Day
    • Week
    • Month
    • All Topics
    • New Topics
    • Watched Topics
    • Unreplied Topics

    • All categories
    • J

      Troubleshooting "TCP: out of memory" - Possible memory leak?

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Xen Orchestra
      11
      1
      0 Votes
      11 Posts
      270 Views
      J
      @florent said: @jr-m4 you can export the heap memory of the nodeJS process by doing kill -SIGUSER2 <xoserverpid> onte that this will increase a lot the memory consumed by the xo process even when its done exporting the memory . This will help us know what xo is doing at the moment Do you have somewhere I can upload the heapsnapshot? (148MB) Ping @poddingue as well, for visibility
    • A

      Backup fails with "Body Timeout Error", "all targets have failed, step: writer.run()"

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Backup
      107
      0 Votes
      107 Posts
      15k Views
      K
      Looking at Git, it doesn't seem like it, so I guess that answers my question.
    • A

      Broadcom removed public access to VDDK download links

      Watching Ignoring Scheduled Pinned Locked Moved Migrate to XCP-ng
      2
      0 Votes
      2 Posts
      74 Views
      J
      @afk said: Hi everyone, Some of you may already be aware of this but I learned the news this morning. https://www.virtualizationhowto.com/2026/09/leaving-vmware-just-got-harder-after-broadcom-pulled-vddk-downloads/ Essentially, Broadcom has decided, without any announcement, to remove all download links (and even some documentation it seems) for VDDK. This impacts all migration tools that use the VDDK for copying data of VM disks. If you have any version of VDDK, please keep it somewhere safe and make backups. I only have a x86-64 linux release from september 2025 that I used for testing V2V. Obviously, I can't share any link here but the release has the following sha256 hash: 79d215198f1b8fd1d240a16b27ac2543c521ae2afdc1876444c2acf8945d74ca VMware-vix-disklib-9.0.0.0.24742305.x86_64.tar.gz Apparently, web archival links are also taken down. @olivierlambert With Broadcom removing public access to VDDK downloads, we now have users who either cannot obtain VDDK at all or whose existing VDDK installations (main + backup) have become corrupted. This creates a real need for a fully open‑source fallback path inside V2V, one that still meets the performance requirements normally associated with VDDK. The open‑source community has already demonstrated that VDDK‑level throughput is achievable without VMware’s proprietary stack. Several projects have shown that: • Parallel NBD can saturate modern storage bandwidth when implemented correctly • Highly multithreaded block pipelines can outperform single‑threaded VDDK transfers • A throwaway Linux Proxy Copy VM can act as an efficient intermediary, reading blocks via NBD and streaming them directly to the destination hypervisor. This approach avoids VDDK entirely, remains fully open source, and provides a reliable fallback for users who can no longer access VMware’s proprietary components. Given the direction Broadcom is taking, having this fallback inside V2V would significantly improve resilience for XCP‑ng users and ensure long‑term independence from VMware licensing changes. The Proxy Copy VM must be treated as an ephemeral orchestration component — automatically excluded from the migration set and destroyed once the transfer completes — ensuring it never interferes with HA, LB, or startup/shutdown sequencing. This architecture also gives Vates a clean, open‑source answer to Broadcom’s decision to pull public VDDK access — ensuring V2V remains fully functional even if VMware continues removing or restricting proprietary components.
    • olivierlambertO

      🛰️ XO 6: dedicated thread for all your feedback!

      Watching Ignoring Scheduled Pinned Locked Moved Xen Orchestra
      261
      7 Votes
      261 Posts
      120k Views
      R
      Hello, I hope this is the correct place to report this issue. Short version: When an XO-managed NFS remote became unreachable, XOA Web UI would not become operational. Once the NFS server became reachable again, the UI immediately recovered. Investigation and Findings We just updated our XOA to ver. 6.8.2, and discovered that if an NFS remote becomes unavailable, XOA Web UI does not load correctly and appears unavailable to users. This has not been an issue with previous versions. We had some network changes in our environment, and because of that the network to one of our NFS remotes broke for some time. The XOA UI would not load at all, despite being up before our network broke the connection to the NFS. Checking logs, we observed repeated warnings such as: TimeoutError: operation timed out for the remote. Additionally, XOA reported: Setting up /v5 Setting up /v6 Setting up / and: Web server listening on http://[::]:80 Web server listening on https://[::]:443 which suggests the web service itself started. Also, xoa check reported all fine. However, as long as our NFS was unreachable, no user could not access a functional Web UI, either v6 or v5. Root Cause One of the configured NFS remotes was unavailable: 172.24.44.140:/mnt/Storage01/vm-iso-store After connectivity to the NFS server (172.24.44.140) was restored, the Web UI immediately became operational again. Before connectivity was restored: df -h was hanging for an extended period. XOA Web UI was unavailable. xoa check did not identify the problem. Multiple remote timeout errors appeared in the logs. After NFS connectivity returned: df -h completed immediately. XOA Web UI became available again. No manual XO intervention was required. We expect an unavailable NFS remote (an ISO repository) should mark the remote as unavailable, and allow XO/XOA Web UI to load normally. If this is not the correct place for this type of bug report, please feel free to move it or point me to the appropriate location. I wanted to make sure the issue was reported and documented. Thanks.
    • acebmxerA

      Nested virtualization - Prevent migration

      Watching Ignoring Scheduled Pinned Locked Moved XCP-ng
      1
      0 Votes
      1 Posts
      13 Views
      No one has replied
    • J

      Not sure if its XOStor but ... VDIs disappearing

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved XOSTOR
      12
      0 Votes
      12 Posts
      277 Views
      J
      @poddingue Okay, we're back here. I was told I have a hung CIFS mount that no longer exists, so a host needs to reboot to clear it, and faulty XOSTOR resources. But I can't reboot the host until I can move VMs off. Is there any indication of how to repair the faulty XOSTOR resources so I can move the VMs and reboot the host? Thanks for taking a look.
    • stormiS

      XCP-ng 8.3 updates announcements and testing

      Watching Ignoring Scheduled Pinned Locked Moved News
      679
      1 Votes
      679 Posts
      614k Views
      gduperreyG
      We have just released security updates for xen and blktap. Full details are available on the blog: https://xcp-ng.org/blog/2026/09/08/september-2026-security-updates-1-for-xcp-ng-8-3-lts/