action #41780
closed[ppc64] Settings in Qemu 3.0 seem to be troublesome
0%
Description
When running a job using Qemu v3 the following error is being shown,
[2018-09-28T09:03:18.0097 EDT] [info] ::: OpenQA::Qemu::Proc::save_state: Saving QEMU state to qemu_state.json
[2018-09-28T09:03:18.0097 EDT] [debug] QEMU: QEMU emulator version 3.0.0 (Virtualization / SLE_12)
[2018-09-28T09:03:18.0097 EDT] [debug] QEMU: Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
[2018-09-28T09:03:18.0098 EDT] [debug] QEMU: qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
[2018-09-28T09:03:18.0098 EDT] [debug] QEMU: qemu-system-ppc64: KVM does not support 1TiB segments which guest expects
might be related to https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg04742.html although Failed to set KVM's VSMT mode to 8 Looks suspicious enough too
Updated by szarate over 5 years ago
Since this might be a qemu problem i asked Zaoliang to report it: https://bugzilla.suse.com/show_bug.cgi?id=1110173
Updated by coolo over 5 years ago
That bug is something completely different though
Updated by szarate over 5 years ago
- Subject changed from Settings in Qemu 3.0 seem to be troublesome to [ppc64] Settings in Qemu 3.0 seem to be troublesome
So this seems to be on ppc64 only for the time being
Updated by pcervinka over 5 years ago
I faced quite similar error during worker setup on ppc64le on SLE15.
[2018-12-05T06:28:19.240 CET] [debug] QEMU: QEMU emulator version 2.11.2(SUSE Linux Enterprise 15)
[2018-12-05T06:28:19.242 CET] [debug] QEMU: Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
[2018-12-05T06:28:19.243 CET] [debug] QEMU: qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
[2018-12-05T06:28:19.244 CET] [debug] QEMU: qemu-system-ppc64: KVM implementation does not support Transactional Memory, try cap-htm=off
It is not exactly same (different qemu version and final error), but can be interesting for you.
Updated by szarate over 5 years ago
Rbrown reported this one for qemu 3.1: https://bugzilla.opensuse.org/show_bug.cgi?id=1121604
"disallowing migration blocker (--only_migratable) for: Nested VMX virtualization does not support live migration yet"
"x86 machines cannot be live-migrated if nested Intel virtualization is enabled. The next version of QEMU will be able to do live migration when nested virtualization is enabled, if supported by the kernel.
Updated by dheidler about 5 years ago
I can reproduce something similar on SLE15SP1:
vugava-1:~ # qemu-system-ppc64 -nographic -enable-kvm
qemu-system-ppc64: warning: Failed to set KVM's VSMT mode to 8 (errno -22)
qemu-system-ppc64: KVM does not support 1TiB segments which guest expects
.
vugava-1:~ # qemu-system-ppc64 -version
QEMU emulator version 3.1.0 (SUSE Linux Enterprise 15)
.
vugava-1:~ # lscpu
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 8
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Model: 2.2 (pvr 004e 0202)
Model name: POWER9 (architected), altivec supported
Hypervisor vendor: pHyp
Virtualization type: para
L1d cache: 32K
L1i cache: 32K
L2 cache: 512K
L3 cache: 10240K
NUMA node0 CPU(s): 0-7
Physical sockets: 2
Physical chips: 1
Physical cores/chip: 4
As this is a POWER9 machine, this kernel patch could be related: https://patchwork.kernel.org/patch/10717339/
Updated by dheidler about 5 years ago
Updated by okurz over 4 years ago
- Status changed from New to Resolved
- Assignee set to okurz
https://bugzilla.suse.com/show_bug.cgi?id=1124589 was fixed. I have never seen this error, e.g. also not after upgrading all workers to openSUSE Leap 15.1 so I assume it's not a problem anymore