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    • G

      GPU Passthrough

      Watching Ignoring Scheduled Pinned Locked Moved Management
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      tjkreidlT
      @coolsport00 Sorry about the VMW need for the Cisco product. Sounds like you have a number of constraints, finances being I'm sure one of them! At least you have time on your hands and the means to experiment. You may, als, end up with a number of different platforms to meet your needs. We ran both Sun Microsystems and Red Hat Linux and Microsoft Windows servers, each taking on specific duties. It's far from ideal and probably not very cost-effective, but you do what you have to to get stuff to work.
    • johnnezeroJ

      Tag-Based Automation Plugin: Tag-Based VM Performance & Permission Management via assigned tag(s)

      Watching Ignoring Scheduled Pinned Locked Moved Management
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      @johnnezero said: @john.c Thank you for all the great ideas, keep em' comming! Your welcome. If your other plugin was vibe coded it may be worth doing the same for the other. If you’re still working on it! @julienxovates In regards to the XO updates with the upcoming encrypted XO data store, by default (opt in for now). Is it ready for plugins like the one done by this author, and others in the future please?
    • J

      Not sure if its XOStor but ... VDIs disappearing

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved XOSTOR
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      @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.
    • J

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

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Xen Orchestra
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      @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 Solved Backup
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      @JB @christopher-petzel Thanks for your patience! We are glad it works well!
    • olivierlambertO

      🛰️ XO 6: dedicated thread for all your feedback!

      Watching Ignoring Scheduled Pinned Locked Moved Xen Orchestra
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      acebmxerA
      SDN controller documentation link - page not found... XO from sources latest commit - 280c0 [image: 1789054561550-screenshot-2026-09-10-113453.png] [image: 1789054584537-screenshot-2026-09-10-113617.png]
    • D

      `/run/sr-mount` parent directory created 0700 on some hosts, 0755 on others

      Watching Ignoring Scheduled Pinned Locked Moved XCP-ng
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      dthenotD
      @Dan Hello, So our investigation found that this change was introduced with commit https://github.com/xcp-ng/sm/commit/00637dd52e845d6016add9718fc9cc694aec9f0d It was aimed at EXTSR in particular, it appear that the first SR to be plugged is the one choosing the mode of sr-mount since util.makedirs also create the parent directory with the given mode. I have created a card for the issue on our side.
    • samuelolavoS

      Laravel Xen Orchestra v1.0.0 — Open-source PHP/Laravel client for the XO REST API

      Watching Ignoring Scheduled Pinned Locked Moved REST API
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      poddingueP
      Pretty cool, @samuelolavo, thanks for clarifying!
    • acebmxerA

      XCP Pulse collects XCP-ng and Xen Orchestra logs

      Watching Ignoring Scheduled Pinned Locked Moved Xen Orchestra
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      acebmxerA
      v0.7.0 — findings, category extraction, and a Vates support package. Since the last update, log collection has been through a few fixes and gained three new pieces built on top of it. Findings, from two sources. A new Findings page reads the XO API (messages, alarms, tasks, missing patches, backup/restore runs) and also scans a collected bundle for storage failures, multipath issues, XAPI exceptions, HA fencing, OOM kills and clock skew — six log-based rules in total now. When both reports describe the same incident (matched by condition and, if both are timestamped, within an hour of each other) each finding gets a small "confirmed by" badge instead of showing up as two unrelated entries. [image: 1789142072836-screenshot_20260911_115408.png] Individual log categories, pulled out of a bundle already on disk instead of downloading again — XAPI, storage, audit, security, kernel, HA, xenstore, RRD, network, system. Tick categories on the Collect form before collecting, or against an already-stored bundle afterwards. [image: 1789142141211-screenshot_20260911_114713.png] A Vates support package. One .tgz — redacted bundle, findings (MD + JSON), redaction report, inventory, and a manifest of what's inside and what was masked — instead of downloading each piece separately. [image: 1789142174831-screenshot_20260911_114827.png] Dashboard status panels now show findings severity, how many redaction rules are off, storage used, and recent job activity at a glance. [image: 1789142371892-screenshot_20260911_115754.png] Known issue — still unsolved The truncated-download-behind-a-reverse-proxy bug from the last post is not fixed. logs.tgz has no Content-Length (XCP-ng builds it on the fly), and on my own Nginx Proxy Manager deployment the proxy's connection to XO intermittently closes before the last chunk arrives. Two things tried, neither fixed it: proxy_buffering off / proxy_set_header Connection "" — reduced how often it happened, didn't eliminate it. Identical config, run twice back to back, produced one good download and one truncated at the same offset as before. Suppressing httpx's Accept-Encoding: gzip, deflate header (it was asking the proxy to transport-encode an already-gzipped file) — same result, only reduced frequency, not shipped since it doesn't actually fix anything. proxy_http_version 1.1; broke the proxy outright when I tried it, for a reason I don't understand — so that's not the next thing to try either. What XCP Pulse now does about it: reads the archive in streaming order and keeps whatever it read before the stream broke, rather than losing the whole analysis to the last few missing bytes, and says on the report when it ended early. If a collection tells you the bundle ended early, the honest advice is to retry it — not that it's fixed. Documented in docs/installation.md in case someone with more insight into the Nginx/httpx side of this has a fix. Also fixed since v0.6.0 The restricted-account warning on the Collect page was showing on every connection, including admin ones — wrong template condition, not a real permission check. Fixed. The default collection no longer downloads the XAPI audit trail unless you ask for it — xen-bugtool already includes it in the bundle, so it was 770 MiB of duplicate data on every run. Default collection is now the bundle only, ~870 MB / ~3 minutes. XO's /messages and similar routes were being limited from the oldest end, not the newest — a pool with a lot of history could return findings from a month ago and miss everything recent. Now filtered by time window server-side instead. https://github.com/acebmxer/xcp_pulse
    • A

      Broadcom removed public access to VDDK download links

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Migrate to XCP-ng
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      poddingueP
      We are fully aware of Broadcom's decision to stop providing the VDDK library to the cloud community or to reserve its download to some authorized partners and customers. As much as we regret this decision, we have to respect it. Because it impacts users who need to make backups, we are evaluating alternative options to address this situation. We will provide further guidance as this evaluation progresses but can't share more information for now.
    • A

      Backup remote repository structure

      Watching Ignoring Scheduled Pinned Locked Moved Backup
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      @abudef Hi, Do you think this doc can help you? Link to doc I think it needs some improvements, feel free to enhance it if you feel it is necessary!
    • D

      Ubuntu cloud images on XCP-ng 8.3 UEFI: ~15s per secondary vCPU at boot, caused by console=ttyS0

      Watching Ignoring Scheduled Pinned Locked Moved Solved Compute uefi cloud-init slow-boot ubuntu
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      poddingueP
      Thanks for the feedback, @dvinni !
    • stormiS

      XCP-ng 8.3 updates announcements and testing

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      B
      @gduperrey Installed on all pools. No issues so far.
    • C

      Bringing container visibility back to XO

      Watching Ignoring Scheduled Pinned Locked Moved Xen Orchestra
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      nathanael-hN
      Hello there, Thanks a lot for raising the question and offering ideas to move forward @caps ! I would like to say that I really like the AI crafted screenshot provided 🤩 But, to be clear, the status as of today regarding Docker or other containers integration in XO/XCP-ng is that there is an item in the DevOps Tools team roadmap. The item is just to look and define what could be done (example update xscontainer, do something totally new, ...). Unfortunately this spike has a low priority and is not yet scheduled. That being said, there is an active project, which is close to what you're asking. It's about a better integration of Kubernetes, including, cluster update, adding nodes, etc. More on this should come in the next months! ️ Also note that I am chatting with different people and teams in Vates about this thread and the Docker integration topic to see if we could do something. Also last thing is that, the community is always welcome to build on top of our open source softwares. I am pretty sure that if someone would contribute a Xen Orchestra plugin to integrate Docker we would welcome this, and we could give tips and guidance. Like @teddyastie said, I'm not sure having Docker, Podman, related features in the guest agent would be something our colleagues would merge. But maybe the docker daemon socket could be kind of shared between VMs (I'm not sure at all this is possible and if possible how to do it). In the meantime exposing the docker daemon over network (with restrictions) to Xen Orchestra would be quick'n easy and I think safe enough if done carefully.
    • johnnezeroJ

      Affinity Manager Plugin: Tag-Based VM placement and grouping control

      Watching Ignoring Scheduled Pinned Locked Moved Management
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      johnnezeroJ
      @poddingue Hey, it's just fun building stuff, even if it ends up in the bit-bucket (as unfotunately that's the destiny of all things anyway). Happy Day
    • R

      Date format on web interface: Only US format available?

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Compute
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      @julienXOvates said: @acomav We will actually propose to change the date and time format in XO6 settings, so you would be able to choose between : YYYY-MM-DD MM/DD/YYYY DD/MM/YYYY and 12h or 24h time format. Hopefully in one of the next 3 months ! I hope that will answer your need, otherwise let me know ! Thanks for putting this one the roadmap, for one of the next 3 months. That date order issue, has been bugging me as if you are rushed off your feet, may not remember that it’s the US date order. Also fits in more with the rest of European software used, or configured for the European localisation.
    • J

      VIDs are showing up as snapshot, but they are not.

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved XOSTOR
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      K
      @olivierlambert I'm seeing a recurrence of the snapshot_of / hidden-disks issue after patching to xapi-26.1.16-1.2 (both hosts, rebooted). Unusual element this time: snapshot-fixer.py dry-run flags ~260 VDIs across the SR that all cite a single OpaqueRef which resolves to no VDI (xe vdi-list | grep <ref> returns nothing). Holding off on rewrite until I understand whether that single-dangling-ref pattern is safe, given the set appears to include base VDIs of legitimate snapshots. Full technical detail and questions posted on GitHub: https://github.com/xcp-ng/xcp/issues/844.
    • A

      XenOrchestra not showing VM Disks on Pool (on single Server working) - XCP-ng Center is showing them

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Xen Orchestra
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      @poddingue I'm seeing a recurrence of the snapshot_of / hidden-disks issue after patching to xapi-26.1.16-1.2 (both hosts, rebooted). Unusual element this time: snapshot-fixer.py dry-run flags ~260 VDIs across the SR that all cite a single OpaqueRef which resolves to no VDI (xe vdi-list | grep <ref> returns nothing). Holding off on rewrite until I understand whether that single-dangling-ref pattern is safe, given the set appears to include base VDIs of legitimate snapshots. Full technical detail and questions posted on GitHub: https://github.com/xcp-ng/xcp/issues/844.
    • msupportM

      Veeam 13.1 Rocky9 Linux Appliance: Potential Data Loss with CBT and Workers with Expired Tokens

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Backup
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      acebmxerA
      I have received a very long update back from Veeam on my backup issues.... There appears to be another user with similar setup / issue not sure if that user is the OP this post specifically... Hello, Thank you for your patience. The QA team has finished the analysis, and I am going to outline the details as below: 1. CBT Inconsistency Issue Whenever you see the Warning about CBT showing: 2026-08-16 17:37:27.459 00079 ERROR | [XenRpcClient]: Failed ListChangedBlocks. Error: [Task 291af3d7-28c1-15a9-7f13-c6a1a12283e9 (Async.VDI.list_changed_blocks) failed: . SR_BACKEND_FAILURE_460. . Failed to calculate changed blocks for given VDIs. [opterr=Source and target VDI are unrelated]. We can go to the previous run and see that we get reports that the CBT of the previous snapshot is inconsistent and thus removed by XCP: 2026-08-16 09:54:34.120 00004 ERROR | [XenBackupManager]: Failed to retain the data for the snapshot 5a17fb31-2616-4e72-a85c-e235883c8c91 Veeam.Vbf.Common.Exceptions.ExceptionWithDetail: [Task 39c0f25f-e811-ee45-1b0b-e4a9ca9839ae (Async.VDI.data_destroy) failed: . VDI_NO_CBT_METADATA. OpaqueRef:a005d328-6da0-b8b7-34ef-0607ed44c2ed The team has been reviewing and testing, and this is what they see. We send the request for the snapshot to be created, and it is sent to the coordinator: xcp-ng-vyadytkn Aug 16 09:50:08 xcp-ng-vyadytkn SM: [1555017][MainThread] vdi_clone: introduced VDI: OpaqueRef:a005d328-6da0-b8b7-34ef-0607ed44c2ed (5a17fb31-2616-4e72-a85c-e235883c8c91) CBT shows as open and reading fine: Aug 16 09:50:08 xcp-ng-vyadytkn SM: [1555017][MainThread] ['/usr/sbin/cbt-util', 'set', '-n', '/var/run/sr-mount/7911c9c5-5f20-01e1-8b8d-39c6a98a2704/5a17fb31-2616-4e72-a85c-e235883c8c91.cbtlog', '-f', '1'] Aug 16 09:50:08 xcp-ng-vyadytkn SM: [1555017][MainThread] pread SUCCESS But look at how on xcp-ng-host2 the CBT gets marked as inconsistent by XCP, even though it's open and reading: Aug 16 09:51:05 xcp-ng-host2 SM: [1683689][MainThread] Changed Block Tracking metadata is inconsistent for disk 5a17fb31-2616-4e72-a85c-e235883c8c91. The Breakdown: xcp-ng-vyadytkn was the coordinator—the one we talk to, who then passes everything around to the hosts. xcp-ng-host2 was the host that the VM resided on at that time. xcp-ng-host2 is marking the CBT as inconsistent and deleting the snapshot CBT log, which means we cannot reference it on the next run. We do not see anything else interacting with the CBT besides that host. This matches exactly what we see with another client running the same setup. The team successfully replicated the environment, which is configured as follows: VM storage is NFS. The VM is running on a host that is not the coordinator. They have been able to reproduce this behavior occasionally, and the working theory is that the VM host keeps its own tracking separate from the coordinator. Part of the backup process requires the VM host to issue a pause/resume via a process called tapdisk. When it resumes, it pushes a data cache (likely inside the NFS cache), overwriting the CBT reference held by the coordinator server. It acts as a race condition—whoever pushes the CBT data last wins. If the VM host pushes last, it breaks what the coordinator is sending. Next Steps for CBT: The team is working to raise this issue directly with Vates so they can address the race condition. We ask that you also open a Vates ticket if possible to help draw more attention to the bug. We are trying to find ways to code around this race condition in the future, but there are currently no ETAs or guarantees. 2. Synthetic Full Failures (Delilah_ArcFS01) In addition to the CBT bug, the team discovered a separate issue. Recently, the synthetic fulls for Delilah_ArcFS01 have been failing. This appears to be related to the NFS repository: [30.08.2026 00:43:22.856] <24> [0007] Error (1) Failed to execute full transform task [30.08.2026 00:43:22.856] <24> [0007] Error (1) Agent: Failed to process method {Transform.CompileFIB}: NfsFileEx was already stopped. File: [Host:, Mount: [/volume1/veeam], Disk: [Delilah ArcFS01 Backup/Delilah ArcFS01 Backup_2026-08-29T232336.vib], Type: [nfs3 (1)]] (Veeam.Backup.Common.CCppComponentException) [30.08.2026 00:43:22.856] <24> [0007] Error (1) in c++: Failed to execute command Command: READ, Offset: 2523136, Data size: 659456, Chunk size: 131072 [30.08.2026 00:43:22.856] <24> [0007] Error (1) in c++: Failed to read file: Offset: 2523136, Block size: 659456, File: Path: [Host:, Mount: [/volume1/veeam], Disk: [Delilah ArcFS01 Backup/Delilah ArcFS01 Backup_2026-08-29T232336.vib], Type: [nfs3 (1)]], Handle: [01000702080061030000000007fffd5f65840fb20000000000000000150061038a2f7c0b0400610379207c0b], Read chunk size: 131072, Write chunk size: 131072, Read only: true Because it continuously fails during the synthetic full, it eventually causes the snapshot to be lost when retries fail. The team will change this logic in a future update. Action Items for the NFS Issue: To help prevent these snapshot loss failures, could you please provide the logs from the repository NFS (192.168.20.91)? Export the logs from the Veeam server and select the repository host. Provide the results of running this command directly on the Repository host: journalctl --since "30 days ago" > journal_repo.log Temporary Workaround: If you can, please temporarily switch to active fulls instead of synthetic fulls to help stabilize the job. Please let me know if you have any questions, and if you are able to raise that ticket with Vates. They also just responded back with this statment... Regarding the second part of the last email with the noticed Synthetic full issue, I actually would like you to also make this registry entry on the Veeam server and keep synthetic fulls enabled to see if it helps with that issue: Path: HKEY_LOCAL_MACHINE\SOFTWARE\Veeam\Veeam Backup and Replication Name: Nfs3CommandWaitTimeoutSec Type: DWORD Value (In Decimal): 86400
    • F

      [dedicated thread] Dell Open Manage Appliance (OME)

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      @AtaxyaNetwork Thank you for sharing the latest version. It works very well except I'm getting error when trying to install any plugin. Did you get this as well ? [image: 1788936195627-d8c58b99-0330-4c85-830c-998b37004d59-image.jpeg]