• i915 pass-through and Linux Mint - xcp-ng 8.3

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  • Slow boot on rocky linux 10 latest kernel

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    acebmxerA
    @poddingue I haven't seen this issue since we last discussed it back in June. Also looking back at the older comments its seems those where having issues were on AMD systems. I have migrated off AMD in my home lab. Work was always Intel.
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    @poddingue Thanks for running the -31 numbers — good to have it confirmed that the ttyS0 removal stays worth ~3-4s even with the clock fixed. Agreed on not rushing -proposed to production; we'll pick up -31 when it promotes and keep the cloud-init tweak permanently.
  • XCP-ng 8.3 updates announcements and testing

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    @gduperrey Rolling pool update worked with released production patches.
  • 🛰️ XO 6: dedicated thread for all your feedback!

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    poddingueP
    Depends which one you mean, because there are two different problems tangled together in this stretch of the thread and they have opposite answers. If you mean @escape222's report at #177, where a VM cloned from XO 6 sits at the TianoCore screen for a couple of minutes, then yes, that was an XO bug and it is fixed. PR #9867, merged 26 May, shipped in XO 6.5.0 on 28 May. The boot order was being rewritten whenever no new disk needed provisioning, so an HVM VM created from a template that already had a disk got network pushed to the front whether or not anyone asked for a network install, and the VM burned the PXE timeout before falling through to the disk. It now follows the install method only. Since you are on sources, anything past 6.5.0 has it. If you mean the slow UEFI boot @MajorP93 described at #182, with the installing Xen timer and spinlock lines, that one is not an XO bug and no XO patch will touch it. It is a regression in the Linux guest kernel introduced in 6.12.5. The cost lands per secondary vCPU, so the wider the VM, the worse it looks. There is a separate thread with the per-vCPU numbers: Ubuntu cloud images on XCP-ng 8.3 UEFI. Worth noting its title blames console=ttyS0, which we now think amplifies the same bug rather than being a second one. I measured that one here this week on a single host, changing only the guest kernel between runs and leaving everything else alone. Ubuntu 7.0.0-30 came in at 50 and 59 seconds across two runs. 7.0.0-31 came in at 0.4. Wall clock reboot to sshd went from 78 seconds to 31. The awkward part is the timing. The upstream fix is f24df84cbe05, in stable 6.12.97 and later, 6.18.y, 7.1.4 and later, and 7.2, but no default channel carries it yet. I re-checked the archives this evening: Debian trixie still ships 6.12.94-1, with 6.12.100-1 sitting in proposed-updates for the next point release, and Ubuntu 26.04 still ships 7.0.0-30 in updates, published today, while 7.0.0-31 has been in proposed since 10 August. Rocky and el10 I could not confirm either way. So keep whatever workaround you are on until a named version lands for your distro. There is arguably a third one at #183, where @Greg_E had Debian 13 and Windows Server 2022 refusing to boot at all when created through XO-lite with UEFI. As far as I know nobody has retested that since. If it is the kernel one you are hitting, this says which version you are waiting for: uname -r dmesg -T | grep -iE "installing Xen timer|spinlock event"
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    acebmxerA
    @msupport - Looks like veeam is still working with your on your issues. While veeam has pushed me off to vates / xen. @poddingue - Any updates from Vates about these issues? Is it possible the least patches just pushed might help with either mine or @msupport's issue? Update - Just got a reply back from veeam ... As per internal testing, I’m escalation this to the next tier Regards
  • After Update XO wont start

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    Hey that sucks after catching up 23 commits. Looks like something broke in the log module during the update. I’d try a clean reinstall of the dependencies first, or drop back to an older Node version for a bit – Node 24 can be fussy with these packages.
  • Update Templates

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    Hi bikemuch, For unregistered XOA the template auto-update is limited. Easiest way is via CLI: download the latest Debian 13 and CentOS Stream 10 ISOs, then use xe vm-import or create new templates from them. You can also check the XOA “Templates” section and force a refresh if available. Works fine for me this way.
  • Tesla xenctrlext.unix_error Device or resource is busy

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    poddingueP
    @seanmcg182 's post might be the answer to the original question, two years late. Your lspci -s 0000:05:00.0 -v at post 8 shows (rev ff) and !!! Unknown header type 7f, which is the same pair he had, and in his case it came from bifurcating the wrong PCIe port in the BIOS rather than from anything XCP-ng was doing. He says the unknown header is what then produced the device or resource busy error on VM start, which is the error you opened with. I don't know whether your board exposes bifurcation the way his X10DRH-CT does, so it might not transfer at all. @kuznetcoff777 if that machine is still around, it'd be worth a look either way.
  • Smart Reboot blocked in XO, and no Rolling Pool Update

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    @poddingue said: What I can't tell you is what set that particular combination on your VM in the first place. Does it ring a bell? I have no Idea. I had it on "Protect from accidental shutdown" but turned that off again, later. Doing this again (on, off) helped, as you said. Thank you so much!
  • Feedback on immutability

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    G
    We attempted a similar configuration using Wasabi S3 cloud storage as the target. What we discovered is that the Lifecyle Rule we created wiped out metadata.json and encryption.json in the root of the bucket once those files were outside the retention window. It was a global rule and I'm guessing that we need to be more precise and use scoped rules that target just the xo-vm-backups, xo-config-backups, and xo-pool-metadata-backups folders. Does that sound like it would work? I have a ticket open as well on this.
  • VM autostart stopped working

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    @poddingue Thank you for the analysis. I'd give you a rep if I could
  • VDI migration SR selection broken?

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    poddingueP
    If the list is only complete after you've been through the Storage view first, that smells like the VM view not loading the whole SR collection, so the dialog only knows about the SR the disk already sits on. I could easily be wrong about the mechanism though. 6.7.0 went out on 30 July, so it would help to know whether it still does this there, and whether anyone else on 6.6.2 sees the same thing. Might be worth a mention to @Team-XO-Frontend, since they'd know straight away whether that dropdown is meant to come from a shared collection or get fetched per view. The nearest thing I found in the tracker is https://github.com/vatesfr/xen-orchestra/issues/7392, but that one is ISO SRs turning up in the wrong list rather than SRs going missing, so probably not the same thing.
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    Hello @mike.potapov , on n_reqs=32 and n_reqs_free=32, I think you're watching td_blktap_t structure. This structure is only used if the pvdriver are not install in the VM, so it's normal this ring is not used. You should watch struct td_xenblkif that is the ring use normally and that must contains 256 requests on max_order=3. The tapdisk will wakeup periodically, you could put a breakpoint on tapdisk_xenio_ctx_ring_event to confirm that the ring is check periodically. You can investigate td_xenblkif here. Ultimatly, you can try to send a notification from the tapdisk under gdb to the linux kernel with call (int)xenevtchn_notify(blkif->ctx->xce_handle, blkif->port); to see if it unlock something on the guest side. It it's the case it will confirm a notification was lost. If not you will get a message about spurious interrupt in the dmesg of the guest kernel.
  • Backup failures with odd connection refused errors

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    poddingueP
    Your xe host-list output kills my guess. All three addresses are real LAN IPs with nothing on loopback, so the loopback is probably coming from the XO side rather than from XAPI. I did test one thing: given a name that resolves to both families, Node reports connect ECONNREFUSED ::1:443 and connect ECONNREFUSED 127.0.0.1:443 together, which is what your log shows, while the literal 127.0.0.1 only ever names one address. That suggests something is handing XO a name rather than an IP, and localhost is the obvious candidate, so it's worth checking what you have registered for that pool under Settings then Servers, which is where the address comes from in the first place: https://docs.xen-orchestra.com/xo5/manage_infrastructure#add-a-host . The migration failure I'd keep separate for now, and could you paste the exact error XO gives when one fails? I don't know whether the two are the same problem and I'd rather have the text than keep making wild guesses.
  • Test results for Dell Poweredge R770 with NVMe drives

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    yannY
    @yllar said: @yannsionneau Hi, any news on the new iso? Hello @yllar In case you missed it, the ISO was released a few days ago: https://xcp-ng.org/blog/2026/08/14/xcp-ng-8-3-lts-refreshed-installation-isos/
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    After a good sleep, I resolved half of my issue. I got my LSI Cards messed up, I accidentally hidan internal LSI3108 (Address 01:00.0) instead of the PCI Card LSI3008 (Address 05:00.0)... My Boot Drives run off of the internal card. From the fallback kernel, I was able to Modify /etc/grub-efi.cfg to remove the internal card form the hidden list. I now have a separate issue, but will make another post.
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    @MajorP93 Ok. Thanks!
  • Date format on web interface: Only US format available?

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    Any update on this? It is a drawback. It is also in the wrong format under snapshots. XO 5 has the format: July 17, 2026 or 2026-07-17 depending on the screen.
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    olivierlambertO
    Question for @Team-XO-Backend