XCP-ng 8.3 updates announcements and testing
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@stormi I'm also getting error on some VMs while trying to export a disk and also trying to even start some VMs from NFS (that were fine before).
xo-server[565]: 2026-05-13T02:53:15.746Z xo:api WARN admin | vm.start(...) [2s] =!> XapiError: INTERNAL_ERROR(xenopsd internal error: Storage_error ([S(Illegal_transition);[[S(Activated);S(RO)];[S(Activated);S(RW)]]])) xo-server[565]: 2026-05-13T02:53:40.652Z xo:api WARN admin | vm.start(...) [3s] =!> XapiError: SR_BACKEND_FAILURE_46(, The VDI is not available [opterr=VDI 399734eb-5965-4799-ac36-f6dd774db867 not detached cleanly], ) -
Ping @Team-Storage again, about the last comment.
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New security update candidates for XCP-ng 8.3 LTS (kernel, xen, intel-microcode)
This release batch contains security fix on kernel, version updates, some bug fixes.
What changed
Virtualization & System
kernel: Update to 4.19.19-8.0.46.3- Fixes CVE-2026-43284 (used by the DirtyFrag and CopyFail2 exploits)
intel-microcode: Update to 20260416-1- Improve Intel support and security INTEL-SA-01420
xen: Update to 4.17.6-8.1- Minor bugfixes for x86 systems, including calibration of various timers and handling of PCI devices when disabling SR-IOV
Control plane
xapi: Update to 26.1.4- Minor NUMA fixes
UI
xo-lite: Update to 0.21.0- chore: upgrade dependencies with known security vulnerabilities (#9640)
- These vulnerabilities are not believed to affect XO Lite itself. They are fixed as defence-in-depth.
- Changelog
- chore: upgrade dependencies with known security vulnerabilities (#9640)
Versions:
gpumon: 24.1.0-83.2.xcpng8.3 -> 24.1.0-84.1.xcpng8.3intel-microcode: 20260115-1.xcpng8.3 -> 20260416-1.xcpng8.3kernel: 4.19.19-8.0.46.2.xcpng8.3 -> 4.19.19-8.0.46.3.xcpng8.3xapi: 26.1.3-1.10.xcpng8.3 -> 26.1.4-3.1.xcpng8.3xcp-featured: 1.1.8-6.xcpng8.3 -> 1.2.1-1.xcpng8.3xen: 4.17.6-6.2.xcpng8.3 -> 4.17.6-8.1.xcpng8.3xo-lite: 0.20.0-1.xcpng8.3 -> 0.21.0-1.xcpng8.3
Test on XCP-ng 8.3
yum clean metadata --enablerepo=xcp-ng-testing,xcp-ng-candidates yum update --enablerepo=xcp-ng-testing,xcp-ng-candidates rebootThe usual update rules apply: pool coordinator first, etc.
What to test
As usual, normal use and anything else you want to test.
Test window before official release of the updates
~1 day
We would like to thank users who reported feedback since our last call for testing:
@Andrew, @FritzGerald, @IgorGlock, @bufanda, @flakpyro, @manilx, @marcoi, @ovicz, @ph7. -
@rzr There's other stuff in the updates too. Are these also expected?
forkexecd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 2.5 M message-switch x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.6 M qcow-stream-tool x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.4 M rrdd-plugins x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 9.8 M sm-cli x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.8 M squeezed x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.9 M varstored-guard x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.9 M vhd-tool x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.9 M wsproxy x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.1 M xenopsd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.4 M xenopsd-cli x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 2.0 M xenopsd-xc x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 5.3 M -
While updating my host i see 30 updates...
========================================================================================================================================= Package Arch Version Repository Size ========================================================================================================================================= Updating: forkexecd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 2.5 M gpumon x86_64 24.1.0-84.1.xcpng8.3 xcp-ng-testing 1.6 M intel-microcode noarch 20260416-1.xcpng8.3 xcp-ng-testing 14 M kernel x86_64 4.19.19-8.0.46.3.xcpng8.3 xcp-ng-testing 29 M message-switch x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.6 M qcow-stream-tool x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.4 M rrdd-plugins x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 9.8 M sm-cli x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.8 M squeezed x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.9 M varstored-guard x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.9 M vhd-tool x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.9 M wsproxy x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.1 M xapi-core x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 30 M xapi-nbd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 3.1 M xapi-rrd2csv x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 3.0 M xapi-storage-script x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 2.5 M xapi-tests x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 5.0 M xapi-xe x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.5 M xcp-featured x86_64 1.2.1-1.xcpng8.3 xcp-ng-testing 1.5 M xcp-networkd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 4.8 M xcp-rrdd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 3.6 M xen-dom0-libs x86_64 4.17.6-8.1.xcpng8.3 xcp-ng-testing 703 k xen-dom0-tools x86_64 4.17.6-8.1.xcpng8.3 xcp-ng-testing 2.0 M xen-hypervisor x86_64 4.17.6-8.1.xcpng8.3 xcp-ng-testing 2.4 M xen-libs x86_64 4.17.6-8.1.xcpng8.3 xcp-ng-testing 65 k xen-tools x86_64 4.17.6-8.1.xcpng8.3 xcp-ng-testing 46 k xenopsd x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 1.4 M xenopsd-cli x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 2.0 M xenopsd-xc x86_64 26.1.4-3.1.xcpng8.3 xcp-ng-testing 5.3 M xo-lite noarch 0.21.0-1.xcpng8.3 xcp-ng-testing 2.6 M Transaction Summary ========================================================================================================================================= Upgrade 30 Packages Total download size: 152 M -
I'm seeing 30 updates as well but they're installed and seem to be working fine on my test systems.
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I'm seeing 30 updates as well but they're installed and seem to be working fine on my test systems.
I think I only listed sources packages (which contains several binaries sub-packages having the same versions), so that's expected
BTW thank you for reactivity on testing
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Indeed we only list source packages.
xapi's source RPM alone creates a lot of RPMs each time, for example. In this case, all those with version 26.1.4-3.1.xcpng8.3. -
@rzr
Seems to be OK
ran a few backups and installed a new VM
XO-lite was already on 0.21.0 (13f98) after the update 2 weeks ago.. Don't know if it's the same. -
Installed on my usual batch of test hosts, so far so good.
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XO-lite was already on 0.21.0 (13f98) after the update 2 weeks ago.. Don't know if it's the same.
yes it's same landed in testing before and not yet moved to updates, btw this version does not bring much change as it's a rebuild with dep update, see there is no full changelog :
https://github.com/vatesfr/xen-orchestra/releases/tag/xo-lite-v0.21.0
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@rzr Updated and running on most systems now. Rolling pool reboot worked correctly (need to disable backups first). VMs and CR running normally.
After a large S3 backup session (that succeeded), GC on the master got stuck in a loop and failed (lock issue). A reboot of the pool master was required to resolve the problem then GC coalesced the VHDs without additional action. Other pools did not have the same problem. I have not seen that issue before, but everything seems fine now so I can't blame the update.
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Why did you need to disable backups before applying this?
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@Greg_E It's not a patch/update issue, it's the rolling pool reboot. If a VM is being backed up and XO wants to migrate the VM and can't, then the host evacuate stops and the reboot does not happen.
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@Andrew Hello,
I'm also getting error on some VMs while trying to export a disk and also trying to even start some VMs from NFS (that were fine before).
Is it still a problem? It might have multiple causes. If it's still an issue, could you share the logs:
/var/log/{SMlog,xensource.log,daemon.log}. It contains information that could help us investigate.The VDI not detached cleanly means that the VDI still has a reference to the host it was running on before.
It's might be caused by the xenopsd error earlier or maybe it's the cause.If you are sure no tapdisk are using the VDI, you can look at
tap-ctl listoutput on each host.
You can clean this reference with the script in/opt/xensource/sm/resetvdis.py single <VDI UUID>. -
Thanks, my updates and my RPU are normally at different times. I also don't backup multiple times per day like I probably should.
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I get this in dmesg after the latest updates :
[ 54.673443] python3[3691]: segfault at 200000 ip 00007f16eb8eca9f sp 00007ffd b84e9ff0 error 4 in libpython3.6m.so.1.0[7f16eb804000+28d000] [ 54.673450] Code: 01 00 00 8d 5f ff 48 8d 2d de 3a 3c 00 c1 eb 03 44 8d 24 1b 4e 8b 44 e5 00 49 8b 70 10 49 39 f0 74 5f 49 8b 40 08 41 83 00 01 <48> 8b 38 48 85 ff 49 89 78 08 74 0d 48 83 c4 10 5b 5d 41 5c c3 0f [ 84.587661] xapi[3697]: segfault at 7f28cacaea40 ip 00007f28c6df0ec2 sp 00007 f289a5b8af0 error 6 in libjemalloc.so.2[7f28c6d85000+85000] [ 84.587669] Code: 48 2b 73 08 44 8b 4d 84 ba 01 00 00 00 49 83 c2 01 49 0f af f1 4c 8d 0d ac 72 42 00 48 89 f1 48 c1 ee 26 48 c1 e9 20 48 d3 e2 <48> 31 54 f3 40 48 8b 8d 58 ff ff ff 48 8b 33 48 8d be 00 00 00 10Hi, if possible can you share us more information to troubleshoot, like a xen-bugtool --yestoall output ?
https://docs.xcp-ng.org/troubleshooting/log-files/If you can also do the usual hardware check (eg: memtest) that would help, because my intuition is that it is not related to this precise update but we like to be sure.
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@rzr Hi. It appeared only once, after a host reboot. If it shows again, I'll let you know.
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We pushed the updates to the
xcp-ng-updatesrepository: https://xcp-ng.org/blog/2026/05/21/may-2026-updates-3-for-xcp-ng-8-3-lts/Changed since the initial announcement,
xenwas updated with the proper vulnerability fix and an update tosmwas added to fix an issue on LVM-based SRs with CBT enabled.Thanks everyone for your feedback!
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