[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes,

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Done at https://wiki.ubuntu.com/XenialXerus/ReleaseNotes#CPU_Hotplug_with_QEMU-KVM By that this issue is resolved. ** Changed in: libvirt (Ubuntu Xenial) Status: Incomplete => Won't Fix ** Also affects: ubuntu-release-notes Importance: Undecided Status: New ** Changed in:

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Thanks for the discussion and suggestion Frank. I agree that the 16.04 release notes are much more appropriate and easier to change in that regard. @Satheera - would that work and be ok for you? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Let me recommend the following to get this issue addressed: Since there are always features that are in one or the other situation or version or a certain platform not supported, the usual way to address this is to add a statement/disclaimer to the release notes to get it documented - if

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

I agree to your summary. I was considering this being "open" so long without being a major issue for anyone combined with the required work getting bigger to implement/fix it for real. So of the two choices: a) having the error statement while trying hotplug be improved saying hotplug is not

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

This is just the libvirt as in Xenial plus the requested patches. I don't see anything obvious to be wrong except if the requested changes were incomplete. Could it be that the use case you are testing is affected by two things: 1. the one we are trying to fix here 2. a second one that is

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes,

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

A proper documentation of a limitation is just as much effort as a fix since it is known in this case. And I like to fix things, I just wanted to make sure that the case is real. You will have to check the PPA and later in the processing of the bug you'll have to do the SRU verification as you

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Moving to "Incomplete" while awaiting information about whether this issue is restricted to a single lab machine or is impacting production workloads. ** Changed in: ubuntu-power-systems Assignee: David Britton (davidpbritton) => Canonical Server Team (canonical-server) ** Changed in:

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Well, if it is a real issue and not just existing in the Lab with a very special machine (it seems hard to get one for you as well) then I can re-port the fix to the current version of Xenials Libvirt and you can retest with that. Anything later is already fixed, but I'd ask you to confirm that

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Fix Released => Confirmed ** Changed in: libvirt (Ubuntu Xenial) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Tags added: triage-g -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1,16-17' for 'cpuset.mems': Invalid

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

These are the fixes you suggested on top of libvirt. If there is something else missing I don't know of it yet. Lacking a test system with the empty numa node I can't cross check this easily. One might construct such a system with KVM I think. If you happen so have a guest xml for libvirt which

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Hi Satheera, since this was waiting for verification so long the version number used in the ppa was consumed by another (unrelated) update. I think there is no reason to drive all of the rebuild just for this as there is an easier way to do the testing against the version in the ppa as-is. You

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: In Progress => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes,

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Make sure it is clear we are waiting on a ppa verification before going on by updating the status - see c#8 ** Changed in: libvirt (Ubuntu Xenial) Status: In Progress => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Triaged => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes,

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Hi, There is a test build of a backport available at [1]. This did work through some basic checks, but a full regression test will take some more time. Please could you check if that fixes the issue you have with the empty numa node setup? If it does we can go on with the SRU. It would be great

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

I checked and I don't have such a system, so I'll rely on you testing the code. I can do the general regression checks but on the case I will need you to confirm it working. I'll first provide a PPA with the fix that you should verify to fix your case. If that passed your verification and my

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Invalid => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes, "Invalid

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: libvirt (Ubuntu Xenial) Status: Invalid => Triaged ** Changed in: libvirt (Ubuntu Xenial) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709877 Title: CPU hotplug fails in the system with empty numa nodes, "Invalid

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Lacking feedback on how real the case is to make a compelling SRU statement for the SRU Team. Please see my comment #4 and reply with the details needed to make a SRU possible. Until that was provided I set this back from incomplete to invalid (no offense, consider it a timeout on the

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Changed in: ubuntu-power-systems Importance: Undecided => High ** Changed in: ubuntu-power-systems Status: In Progress => Incomplete ** Changed in: libvirt (Ubuntu Xenial) Status: New => Incomplete ** Changed in: ubuntu-power-systems Assignee: (unassigned) => David

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

** Also affects: ubuntu-power-systems Importance: Undecided Status: New ** Changed in: ubuntu-power-systems Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

There is some noise when applying this to Xenial. Nothing too big, but I think at least commit dc0d7fe0267e2ff6e5a9625164f2896f9cc5 (HEAD) Author: Peter Krempa Date: Tue Sep 13 14:28:33 2016 +0200 util: numa: Remove impossible error handling Would be needed to

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

The first release to have a version >=2.3 was Zesty which implied this is good >=UCA-Ocata and thereby available in a supported way to LTS users as well if they opt into UCA. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

Change is in >=v2.3.0 which makes this Fix released for a while. Lets add and consider SRU from there. ** Also affects: libvirt (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: libvirt (Ubuntu) Status: New => Fix Released -- You received this bug notification

[Bug 1709877] Re: CPU hotplug fails in the system with empty numa nodes, "Invalid value '0-1, 16-17' for 'cpuset.mems': Invalid argument"

--- Comment From lagar...@br.ibm.com 2017-08-10 09:35 EDT--- >From Nitesh: - The following commit resolves the issue: commit 77cb01bc0fec4d0da02e1d4df75d28870b0ef926 Author: Peter Krempa Date: Tue Sep 13 15:55:06 2016 +0200 numa: