[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
Likewise for Focal. Uploaded! ** Changed in: nova (Ubuntu Focal) Importance: Undecided => Medium ** Changed in: nova (Ubuntu Focal) Status: New => In Progress ** Changed in: nova (Ubuntu Focal) Assignee: (unassigned) => Rodrigo Barbieri (rodrigo-barbieri2010) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
** Changed in: nova (Ubuntu Jammy) Importance: Undecided => Medium ** Changed in: nova (Ubuntu Jammy) Assignee: (unassigned) => Rodrigo Barbieri (rodrigo-barbieri2010) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
Hello Paul, or anyone else affected, Accepted nova into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/nova/3:25.2.1-0ubuntu2.4 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-jammy. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: nova (Ubuntu Jammy) Status: In Progress => Fix Committed ** Tags added: verification-needed verification-needed-jammy -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
Hi Rodrigo, Thanks for the debdiffs and SRU template! I've had minor changes to the Jammy upload, and build-tested it in a PPA [1]. It looks good; uploading! (I'm looking into/building Focal.) [1] https://launchpad.net/~mfo/+archive/ubuntu/lp1999814 ** Changed in: nova (Ubuntu Jammy) Status: New => 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/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
** Patch added: "lp1999814_focal.debdiff" https://bugs.launchpad.net/nova/+bug/1999814/+attachment/5795887/+files/lp1999814_focal.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
** Patch added: "lp1999814_jammy.debdiff" https://bugs.launchpad.net/nova/+bug/1999814/+attachment/5795868/+files/lp1999814_jammy.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
** Description changed:
SRU TEMPLATE AT THE BOTTOM ***
Hello,
This is very similar to pad.lv/1852437 (and the related blueprint at
https://blueprints.launchpad.net/nova/+spec/allow-disabling-cpu-flags),
but there is a very different and important nuance.
A customer I'm working with has two classes of blades that they're
trying to use. Their existing ones are Cascade Lake-based; they are
presently using the Cascadelake-Server-noTSX CPU model via
libvirt.cpu_model in nova.conf. Their new blades are Ice Lake-based,
which is a newer processor, which typically would also be able to run
based on the Cascade Lake feature set - except that these Ice Lake
processors lack the MPX feature defined in the Cascadelake-Server-noTSX
model.
The result of this is evident when I try to start nova on the new blades
with the Ice Lake CPUs. Even if I specify the following in my
nova.conf:
[libvirt]
cpu_mode = custom
cpu_model = Cascadelake-Server-noTSX
cpu_model_extra_flags = -mpx
That is not enough to allow Nova to start; it fails in the libvirt
driver in the _check_cpu_compatibility function:
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service Traceback (most
recent call last):
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 771, in
_check_cpu_compatibility
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
self._compare_cpu(cpu, self._get_cpu_info(), None)
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 8817, in
_compare_cpu
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service raise
exception.InvalidCPUInfo(reason=m % {'ret': ret, 'u': u})
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
nova.exception.InvalidCPUInfo: Unacceptable CPU info: CPU doesn't have
compatibility.
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service 0
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service Refer to
http://libvirt.org/html/libvirt-libvirt-host.html#virCPUCompareResult
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service During handling of
the above exception, another exception occurred:
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service Traceback (most
recent call last):
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/oslo_service/service.py", line 810, in
run_service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service service.start()
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/service.py", line 173, in start
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
self.manager.init_host()
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/compute/manager.py", line 1404, in
init_host
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
self.driver.init_host(host=self.host)
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 743, in
init_host
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
self._check_cpu_compatibility()
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service File
"/usr/lib/python3/dist-packages/nova/virt/libvirt/driver.py", line 777, in
_check_cpu_compatibility
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service raise
exception.InvalidCPUInfo(msg)
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
nova.exception.InvalidCPUInfo: Configured CPU model: Cascadelake-Server-noTSX
is not compatible with host CPU. Please correct your config and try again.
Unacceptable CPU info: CPU doesn't have compatibility.
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service 0
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service Refer to
http://libvirt.org/html/libvirt-libvirt-host.html#virCPUCompareResult
2022-12-15 17:20:59.562 1836708 ERROR oslo_service.service
If I make a custom libvirt CPU map file which removes the "" feature and specify that as the cpu_model instead, I am
able to make Nova start - so it does indeed seem to specifically be that
single feature which is blocking me. However, editing the libvirt CPU
mapping files is probably not the right way to fix this - hence why I'm
filing this bug, for discussion of how to support cases like this.
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
The patch cannot be applied to Ubuntu Bionic (18.04), since its libvirt version is older than the minimum required (mentioned in the patch). The Ubuntu Cloud Archive for Bionic (eg, from Focal / Ussuri) can be used/patched though, as it provides a sufficiently newer version of libvirt. `QEMU >=2.9 and libvirt >= 4.4.0 are the mininum required versions` $ rmadison -a source libvirt -s bionic-updates # ubuntu archive libvirt | 4.0.0-1ubuntu8.21 | bionic-updates | source $ cmadison libvirt | grep bionic-updates # cloud archive libvirt | 5.0.0-1ubuntu2.6~cloud3 | stein | bionic-updates | source libvirt | 5.4.0-0ubuntu5.4~cloud1.1 | train | bionic-updates | source libvirt | 6.0.0-0ubuntu8.16~cloud0 | ussuri | bionic-updates | source ** Changed in: nova (Ubuntu Bionic) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
The patch is present in Ubuntu Mantic and later.
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/oracular-devel --
nova/conf/workarounds.py
pkg/ubuntu/oracular-devel:nova/conf/workarounds.py:
cfg.BoolOpt('skip_cpu_compare_at_startup',
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/noble-devel --
nova/conf/workarounds.py
pkg/ubuntu/noble-devel:nova/conf/workarounds.py:
cfg.BoolOpt('skip_cpu_compare_at_startup',
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/mantic-devel --
nova/conf/workarounds.py
pkg/ubuntu/mantic-devel:nova/conf/workarounds.py:
cfg.BoolOpt('skip_cpu_compare_at_startup',
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/jammy-devel --
nova/conf/workarounds.py
$
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/focal-devel --
nova/conf/workarounds.py
$
$ git grep skip_cpu_compare_at_startup pkg/ubuntu/bionic-devel --
nova/conf/workarounds.py
$
** Also affects: nova (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: nova (Ubuntu)
Status: New => Fix Released
--
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https://bugs.launchpad.net/bugs/1999814
Title:
[SRU] Allow for specifying common baseline CPU model with disabled
feature
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[Bug 1999814] Re: [SRU] Allow for specifying common baseline CPU model with disabled feature
** Also affects: nova (Ubuntu) Importance: Undecided Status: New ** Also affects: nova (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: nova (Ubuntu Focal) Importance: Undecided Status: New ** Also affects: nova/victoria Importance: Undecided Status: New ** Also affects: nova/ussuri Importance: Undecided Status: New ** Also affects: nova/xena Importance: Undecided Status: New ** Also affects: nova/yoga Importance: Undecided Status: New ** Also affects: nova/wallaby Importance: Undecided Status: New ** Tags added: sts sts-sru-needed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
