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[Bug 1761798] Re: live migration intermittently fails in CI with "VQ 0 s
From: |
Balazs Gibizer |
Subject: |
[Bug 1761798] Re: live migration intermittently fails in CI with "VQ 0 size 0x80 Guest index 0x12c inconsistent with Host index 0x134: delta 0xfff8" |
Date: |
Wed, 25 Nov 2020 13:44:10 -0000 |
I see two recent hits we have still logs for.
The one described in comment #10
And another but there the error message is a bit different:
on the migration source host:
:
https://6f0be18d925d64906a23-689ad0b9b6f06bc0c51bfb99bf86ea04.ssl.cf5.rackcdn.com/698706/4/check/nova-grenade-multinode/ee2dbea/logs/libvirt/qemu/instance-0000001b.txt
char device redirected to /dev/pts/0 (label charserial0)
virtio: zero sized buffers are not allowed
2020-11-23 22:20:54.297+0000: initiating migration
on the migration destination
https://6f0be18d925d64906a23-689ad0b9b6f06bc0c51bfb99bf86ea04.ssl.cf5.rackcdn.com/698706/4/check/nova-grenade-multinode/ee2dbea/logs/subnode-2/libvirt/qemu/instance-0000001b.txt
char device redirected to /dev/pts/0 (label charserial0)
2020-11-23T22:20:55.129189Z qemu-system-x86_64: VQ 0 size 0x80 Guest index 0x62
inconsistent with Host index 0xa1: delta 0xffc1
2020-11-23T22:20:55.129230Z qemu-system-x86_64: Failed to load virtio-blk:virtio
2020-11-23T22:20:55.129241Z qemu-system-x86_64: error while loading state for
instance 0x0 of device '0000:00:03.0/virtio-blk'
2020-11-23T22:20:55.129259Z qemu-system-x86_64: load of migration failed:
Operation not permitted
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https://bugs.launchpad.net/bugs/1761798
Title:
live migration intermittently fails in CI with "VQ 0 size 0x80 Guest
index 0x12c inconsistent with Host index 0x134: delta 0xfff8"
Status in OpenStack Compute (nova):
Confirmed
Status in QEMU:
New
Bug description:
Seen here:
http://logs.openstack.org/37/522537/20/check/legacy-tempest-dsvm-
multinode-live-
migration/8de6e74/logs/subnode-2/libvirt/qemu/instance-00000002.txt.gz
2018-04-05T21:48:38.205752Z qemu-system-x86_64: -chardev
pty,id=charserial0,logfile=/dev/fdset/1,logappend=on: char device redirected to
/dev/pts/0 (label charserial0)
warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5]
2018-04-05T21:48:43.153268Z qemu-system-x86_64: VQ 0 size 0x80 Guest index
0x12c inconsistent with Host index 0x134: delta 0xfff8
2018-04-05T21:48:43.153288Z qemu-system-x86_64: Failed to load
virtio-blk:virtio
2018-04-05T21:48:43.153292Z qemu-system-x86_64: error while loading state for
instance 0x0 of device '0000:00:04.0/virtio-blk'
2018-04-05T21:48:43.153347Z qemu-system-x86_64: load of migration failed:
Operation not permitted
2018-04-05 21:48:43.198+0000: shutting down, reason=crashed
And in the n-cpu logs on the other host:
http://logs.openstack.org/37/522537/20/check/legacy-tempest-dsvm-
multinode-live-
migration/8de6e74/logs/screen-n-cpu.txt.gz#_Apr_05_21_48_43_257541
There is a related Red Hat bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1450524
The CI job failures are at present using the Pike UCA:
ii libvirt-bin 3.6.0-1ubuntu6.2~cloud0
ii qemu-system-x86 1:2.10+dfsg-0ubuntu3.5~cloud0
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