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    • stormiS

      XCP-ng 8.3 updates announcements and testing

      Watching Ignoring Scheduled Pinned Locked Moved News
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      stormiS
      @rzr said: Thank you again for feedback we will try to address reported issues on next batch (to come soon). Note that some issues are not related to this specific update batch, but might have been introduced on previous ones (TBC). Not knowing myself what it meant, I asked Philippe: it's about the nslookup issue. And potentially the issue reported by @ph7 but it's not clear to me yet if there was a problem with XCP-ng or Xen Orchestra. Anyway, basically this means that there's no known issue caused by this batch of updates, and that we'll keep addressing any relevant issue in the next updates if necessary, as usual.
    • johnnezeroJ

      Tag-Based Automation: Manage VM CPU Priority via assigned tag.

      Watching Ignoring Scheduled Pinned Locked Moved Management
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      tjkreidlT
      @johnnezero The full HTML versions will render much better. The PDF conversion is less than perfect. iIll try to get those uploaded, as well.
    • A

      XO error/warning: Clean VM directory. unhandled error while checking alias.

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      FagnerMoraesF
      I performed a full backup and a delta backup test. The full backup is working, but the delta backup is not. If you look at the image, I performed 2 full backups successfully, but the first backup, which is not encrypted and is a full backup, is not here — only the .json file that generated it is present. Where would the delta backup be located if not in the same folder as the others? According to the log, I only saw the same location being used. [image: 1780419911823-3f42504c-23cc-410d-b3f4-cfaba3b128a3-image.jpeg]
    • acebmxerA

      Some dashboard loading issues with v6

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      acebmxerA
      @simonp said: @acebmxer Hi, Thanks to your help we were able to identify an issue with Redis that we think is the source of the v6 dashboard loading issue. Could you try and checkout the fix_redis_encryption_issue branch, rebuild xo and restart ? This should solve the 401 issues. Switched back to Master branch and made some changes to my install script. add diagnostics for missing XO 6 web UI build artifacts Plain bash [[ -f ]] fails silently on unreadable paths owned by SERVICE_USER, causing false-positive missing-artifact warnings. Switch all file/dir tests and grep calls to use sudo. SUCCESS] Xen Orchestra built successfully [INFO] Build verification passed: dist — all JS chunks present. [INFO] Build verification passed: dist — all JS chunks present. [INFO] Creating systemd service... [SUCCESS] Systemd service created and enabled [INFO] Configuring sudo for xo-service (mount/umount/findmnt)... [SUCCESS] Sudo configured for xo-service (mount, umount, findmnt) [INFO] Applying security hardening... [INFO] Starting xo-server service... [INFO] Waiting for Xen Orchestra to become ready (up to 60s)... [INFO] Not ready yet (attempt 1/10), retrying in 6s... [SUCCESS] Xen Orchestra is ready (HTTPS on port 443) [SUCCESS] Update completed successfully! [INFO] New commit: 0f29421627c7 v6 Dashboard still loading correctly. Thank you for the fix.
    • AlexanderKA

      Nested Virtualization of Windows Hyper-V on XCP-ng

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      C
      Thanks for that information. I will make this message short because @stormi is busy but I want to say thanks to Vates and XCP-ng for all their work done to support Windows on the Xen platform. This includes TPM2 and secure boot support and Microsoft-signed pv drivers. Well done!
    • olivierlambertO

      🛰️ XO 6: dedicated thread for all your feedback!

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      N
      Afternoon, my session timed out and I do get the normal login page, but when I login I get this UiAlert Message: [image: 1779994906012-screenshot-from-2026-05-28-12-51-11.png] import{B as e,C as t,St as n,U as r,X as i,_ as a,g as o,h as s,m as c,t as l,x as u,xt as d}from"./_plugin-vue_export-helper-DqPMJZfB.js";import{n as f,t as p}from"./VtsIcon-BoVekVkM.js";import{t as m}from"./use-mapper-M_HHKN3j.js";import{t as h}from"./UiButtonIcon-Df9Z1TJo.js";var g={class:`content`},_={class:`alert typo-body-regular-small`},v={key:0},y=l(t({__name:`UiAlert`,props:{accent:{},close:{type:Boolean}},emits:[`close`],setup(t,{emit:l}){let y=l,b=i(),x=m(()=>t.accent,{info:`status:info-circle`,success:`status:success-circle`,warning:`status:warning-circle`,danger:`status:danger-circle`},`info`);return(i,l)=>(e(),a(`div`,{class:n([d(f)({accent:t.accent}),`ui-alert`])},[c(`div`,g,[u(p,{class:`information-icon`,name:d(x),size:`current`},null,8,[`name`]),c(`div`,_,[c(`div`,null,[r(i.$slots,`default`,{},void 0,!0)]),b.description?(e(),a(`div`,v,[r(i.$slots,`description`,{},void 0,!0)])):o(``,!0)]),t.close?(e(),s(h,{key:0,class:`close-button`,icon:`fa:xmark`,accent:`brand`,size:`small`,onClick:l[0]||=e=>y(`close`)})):o(``,!0)])],2))}}),[[`__scopeId`,`data-v-5b9f5cdd`]]);export{y as t}; ... and after back-paging, I was able to login normally.
    • J

      (Windows) guest IPv6 address doesn't collapse zeroes -> Long IPv6 addresses

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      J
      @dinhngtu said: I've taken a quick look, looks like it'll be solved as part of the Windows guest agent overhaul, so please look forward to that. Thanks for the info. I will be looking forward to that, indeed.
    • johnnezeroJ

      Server Admin Guide: A Tale of Two Servers: BIOS, GPU, and NUMA Tuning for XCP-ng: Preserving the valuable work done by Tobias Kreidl (@tjkreidl)

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      tjkreidlT
      @poddingue Thank you kindly! Honestly, whatever organizational structure you think is best is fine by me.
    • A

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

      Watching Ignoring Scheduled Pinned Locked Moved Xen Orchestra
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      K
      Another confirmed data point, with package delta and the specific malformed field. Host: XCP-ng 8.3.0, xapi 26.1 (build 26.1.4), Xen 4.17.6-9. Setup: XO from sources (community). All VDIs vanished from the per-VM Disks tab (XO 5 and XO 6); xe and the SR Disks tab show them fine; VMs run normally. Trigger was the 8.3 host update + reboot this morning — XO build unchanged since May 28, disks visible yesterday. Host update delta (today): all 26.1.3-1.10 → 26.1.4-3.1 (xapi-core, xenopsd, sm-cli, sm-fairlock, xapi-storage-script, vhd-tool, message-switch, etc.), plus sm 3.2.12-17.8 → 17.9 as an independent bump. The malformed field. An affected live OS disk (VM running): is-a-snapshot: false snapshot-of: <populated, points to another VDI> snapshot-time: <populated> A normal base VDI should have an empty snapshot-of. After the update, snapshot-of/snapshot-time are populated on real, non-snapshot base VDIs, and XO filters anything with a non-empty snapshot-of out of the per-VM Disks view — which is the disappearance. The VDI that snapshot-of points to is a legitimate base image in my environment (a heavily-reused Win2022 build template with a large genuine snapshot/clone lineage), so I can't tell from the host side whether the parentage links themselves changed or only the snapshot-of on live VDI labeling did. Either way, the consumer-visible effect is the same. REST confirms: /rest/v0/vms/<uuid>/vdis → []; /rest/v0/vdis/<uuid> → "no such VDI" for the VBD's referenced UUID, while xe vdi-list shows it. Caution for others: since live disks now carry snapshot-like metadata, be careful with Health-dashboard "orphan" cleanup and snapshot deletion on affected VMs until this is understood. Workaround that restored the per-VM Disks view: snapshot → revert → delete-snapshot (tested on a powered-off VM, immediate). Happy to provide more diagnostics. Quick Follow-up: Additional symptom, same root cause: ISO-SR VDIs are also affected. Pre-existing ISOs disappeared from the XO ISO picker (only ISOs uploaded after the patch still show). An affected ISO's vdi-param-list shows: is-a-snapshot: false snapshot-of: 937c3945-... (same anchor UUID as an affected VM disk on a different SR) snapshot-time: 19700101T00:00:00Z (Unix epoch — clearly synthetic) Notably the spurious snapshot-of on both an ISO VDI and an unrelated VM OS disk points to the same anchor UUID, with an epoch timestamp — so this looks like the update is stamping pre-existing VDIs with a bogus snapshot-of rather than any real lineage. VHD chains/GC are clean (GC reports no work).
    • W

      VDI not showing in XO 5 from Source.

      Watching Ignoring Scheduled Pinned Locked Moved Unsolved Management
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      andrewperryA
      @Danp I was going to do the upgrade over the December / January Christmas break in Australia but that is when this issue became apparent so we didn't want to be making major changes until it was resolved. I note @anthoineb noted the first report was late August / September 2025 which was just before 8.2.1 reached EOL, so it would be a shame not to have a fix for it tested on 8.2.1 as it seems an upgrade to 8.3 would be unwise while we still have this issue?
    • B

      Adding new host to pool fails - Stunnel SSL certiticate verification failure

      Watching Ignoring Scheduled Pinned Locked Moved XCP-ng
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      B
      @LucienLassalle Thanks for the quick response and the effort in recreating the issue! It all played out exactly as you laid it out, even the cert showing up as a .new.pem at first. Out of curiosity, what in your testing did result in causing this issue? Is it possible that my upgrade from 8.2 to 8.3 may have caused the underlying issue?
    • P

      broken backup in XOA 6.5 ? orphan VDI Directory, not referenced by any backup

      Watching Ignoring Scheduled Pinned Locked Moved Backup
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      acebmxerA
      @pierrebrunet I have updated my XOA and Proxies... It seems i did not see the warning on the next round of backups. Will continue to monitor now patches are installed.
    • P

      XO-Lite back to 0.19

      Watching Ignoring Scheduled Pinned Locked Moved Solved XO Lite
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      acebmxerA
      @pdonias confirmed... [image: 1780065202934-screenshot-2026-05-29-103255.png]
    • PoloGTIJauneP

      Build number cloud vs Build number 8.3.0

      Watching Ignoring Scheduled Pinned Locked Moved Solved French (Français)
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      olivierlambertO
      Ah excellente nouvelle Je passe le sujet en résolu !
    • J

      [Solved] SR_SOURCE_SPACE_INSUFFICIENT - Problems enabling HA

      Watching Ignoring Scheduled Pinned Locked Moved Solved XCP-ng
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      J
      @olivierlambert Thanks again for your input and recomendations! I'll verify that this is solved by having the LUN expanded to 8GB instead. Afterwards I'll mark your answer as the solution!
    • V

      Question about pools

      Watching Ignoring Scheduled Pinned Locked Moved XCP-ng
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      P
      @vlamincktr XO PROXY from source is pretty reliable at no cost either use @acebmxer script or @ronivay here is a quick tuto on an ubuntu VM https://omnibox.huducloud.com/shared_article/QJ9y1bRSPj9VTbWp6NKaV7yn/installation-xoa-a-partir-des-sources-github-ronivay first part is XO CE, second part is XO PROXY CE beware as you delegate some jobs to XO PROXY, to ever upgrade XO PROXY when you upgrade XOA, so that they have the same backup mechanisms/code
    • N

      Create a new SR: qcow2 failure

      Watching Ignoring Scheduled Pinned Locked Moved Management
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      N
      @florent said: where does this disk comes from From my Redhat 10 @florent said: if you have access to your SR from the outside, you can also put the qcow2 file directly I create a VM to be a NFS to access the 3 HDs, the qcow disks are on the Redhat 10 that I was trying to import from. Do you mean I put the qcow disks on one of the HDs and access them when I create a VM?
    • J

      Backups Fail with ENOENT: no such file or directory

      Watching Ignoring Scheduled Pinned Locked Moved Backup
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      J
      @pierrebrunet I inadvertently found more information yesterday. I installed an old e492b commit on a new machine, configured identically to the original, and got a different error but the same effect. The new error is: xcp xo backup Error: read ETIMEDOUT That lead me to this page: https://xcp-ng.org/forum/topic/10799/backup-timeout-error I moved the XO machine onto the same subnet as XCP, leaving the storage behind in a different network. This fixed the issue, at least on commit e492b ... I have not yet tried it on the new release... however I am pretty confident it will be successful. If I'm honest, I think this is a tuning issue between XO and XCP. XO is now mounting an NFS share across this subnet boundary and that mount is not having any sort of performance issue, but for some reason XO times out transferring the same data from dom0? That seems off to me. It's not a probem moving XO to the other subnet, so I've done that, but maybe this deserves a look in the future.
    • D

      xe-gues-utilities woes on openSUSE Leap 16

      Watching Ignoring Scheduled Pinned Locked Moved XCP-ng
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      D
      @MajorP93 that’s fine - I never use ballooning anyway so I guess I am covered good
    • Tristis OrisT

      Continuous replication auto start

      Watching Ignoring Scheduled Pinned Locked Moved Solved Backup
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      julienXOvatesJ
      @tonyp90 great, thanks !