@john.c I've put this on the feedback portal as a feature request, so it doesn't get buried in a thread that started out about pool masters: https://feedback.vates.tech/posts/121/publish-build-date-and-package-manifest-sbom-with-the-xoa-xva-download . As far as I know votes there help the team prioritise, so if you and @Forza want it, that's the place to say so. There's an open PR adding SBOM generation (https://github.com/vatesfr/xen-orchestra/pull/10368), but going by the files it touches it covers XO's own JavaScript dependencies, not the Debian packages in the appliance. I've only looked at the file list, not the code, so happy to be corrected. How often the downloadable XVA gets rebuilt, I still don't know: @Danp said back in 2024 that it isn't rebuilt for every XOA release (https://xcp-ng.org/forum/post/81220), which would fit the 2025.12 tag, but I'd rather not guess beyond that.

I confirm that this is the current behaviour, as @pilow reported here https://xcp-ng.org/forum/post/99446 We might change it in the future to make it better, but it won't be trivial to change.

@Forza you will have to switch to LATEST to profit from end month release STABLE is one version behind LATEST both are production ready.

@poddingue I see backups in the tasks view fine, just not mirror ones. I'm talking about v5, haven't converted to v6 yet because of missing features.

@Forza I keep hoping to see an Alpha or Beta of XCP-ng 9 soon, but I think there is still a lot of work to be done on the host side and on the Xen Orchestra 6 side.

\o/

@olivierlambert said in Migrating logs and history between XOA instances?: Hi, VM stats aren't store on XOA but on your pools, and they should be there with the same history as the old one Can you tell exactly what kind of logs are you talking about? Thanks. I had looked on the wrong VM. The stats are indeed retained. Originally I was thinking of audit logs, but I realized they can be exported and imported. So for m point of view it is enough for now. Other logs that are missing is for example backup logs.

@thomas-dkmt we might need to make sure XO docs tell how system updates are handled and proxy config

It might record the max static RAM (IDK)

I would like to suggest to configure a remote syslog server. it centralizes all the log s and give you full control over the retention. It would also avoid situation where a disk full would impact your logging as well XCP-ng or XOA host operations. For your XCP-NG host go to you POOl, select Advanced tab and configure the Remote syslog host section to point to your syslog server. For XOA, you can follow the instruction here : https://docs.xen-orchestra.com/backups#send-xo-logs-to-an-external-syslog-server

@dinhngtu Yes, looks like it. I stopped Netdata and the problem went away. But it is strange it started after the latest set of updates.

@olivierlambert @DustinB @Forza May I suggest that it goes a bit further, unless it already does so. Can the VMs in Xen Orchestra show if it was backed up successfully in the most recent job. As well as when it was last backed up, if you happen to not have the report yet (or read it) you can see at a glance. That way it makes decoding the orange status for the backup job easier, so you know which ones you need to do a backup job run for. Alternatively show which ones failed and were successful, when you get the details for the job (task) in Xen Orchestra following an orange status on Xen Orchestra 6.

Data point from a 2-host XCP-ng 8.3 pool that supports @tosh's diagnosis, plus a no-patch workaround that gave us ~2.7x until the TCP_NODELAY fix lands. Setup XCP-ng 8.3, xapi-core / vhd-tool 26.1.16-1.2.xcpng8.3, dom0 kernel 4.19.0+1 Two hosts, local ext SRs on NVMe (Samsung 970 EVO Plus / WD Red SN700) Dedicated migration network: 2.5 GbE (Intel i226-V, igc), MTU 9000, no errors Offline storage migration (halted VM, VM.migrate_send) of 2 VDIs (disk + snapshot), 16 GiB virtual / 7773 MiB allocated each; sparse_dd ... -prezeroed ... -dest-proto nbd over TLS Baseline (stock) 132 s per VDI, i.e. ~59 MiB/s on the wire, flat line, same in both directions Link at ~20 % of line rate, source SR read latency 0.3 ms, dom0 total <= 0.5 vCPU, no single dom0 vCPU above 0.08 (RRD, 60 s averages) Sending host with turbo or capped at 2.5 GHz gave the same 132 s, so not CPU-bound here Workaround: disable delayed ACKs on the receiver, only for the migration-network route # on the destination host; adapt prefix/dev/src to the output of: ip route show <migration-net> ip route change 10.10.10.0/24 dev xenbr1 proto kernel scope link src 10.10.10.1 quickack 1 With the receiver ACKing immediately, Nagle on the sender only waits one RTT instead of the ~40 ms delayed-ACK timer. Result (same VM, same direction, same data) stock quickack 1 on receiver per VDI 132 s / 132 s 50 s / 46 s throughput ~59 MiB/s ~155-169 MiB/s whole migration 4:50 2:00 dom0 on the receiver went up to ~1.1 vCPU total, still nothing saturated. Caveats One run per arm, one pool. I did not capture ss -ti during the runs, so the notsent:512 signature is inferred, not observed here. It does not address the reply gating @TeddyAstie described, it only removes the delayed-ACK half. Consistent with that, we land at ~2.7x, below the ~4.3x reported above for TCP_NODELAY (different rig, so not directly comparable). Not persistent: lost on reboot and when xapi re-plugs the PIF. We re-apply it from a small systemd unit at boot as a stopgap and will remove it once vhd-tool ships TCP_NODELAY. Scope is only connections routed via the migration network (storage and live migration). More ACK packets on that link, nothing else changes. Is there a PR or issue for the TCP_NODELAY patch in xapi-project/xen-api that we can follow? I could not find one.

Hi Indeed. We will see how we can fix this bug. Thanks

@iams3le we have switched to the signed xcp-ng drivers. We also replaced our older 2022 servers.

@olivierlambert thanks. I'll read through the documentation and maybe contact support about this.

@julien-f said in Feat: Improvements to the VM statistics page:: Yes, I've noted this for XO6 Great. Thanks Now we just need a XO 6.0 release

XO does not pause backups during upgrades/restart, all currently running backups will be interrupted as @olivierlambert said. An interrupted backup is not a big problem by itself, nothing will be broken, and the next run will run properly. Backups are only run at the time they are scheduled, if XO is offline at this time, it will not automatically run them when restarted, it will wait for the next scheduled run.

@manilx 2 more and yes seems to be confusing and just to round it up. Same VM as above Delta (full) backup using NBD without and with "nconnect=6" in the remote setting: [image: ScreenShot 2024-04-29 at 14.27.19.png] with nconnect=6 [image: ScreenShot 2024-04-29 at 14.28.57.png] nconnect=6 doesn't seem to do a lot.