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From: Balazs Gibizer <1761798@bugs.launchpad.net>
To: qemu-devel@nongnu.org
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	[thread overview]
Message-ID: <160631185105.16115.17000000353064610464.malone@gac.canonical.com> (raw)
In-Reply-To: 152303245198.3233.1033096993665779324.malonedeb@wampee.canonical.com

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

To manage notifications about this bug go to:
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  parent reply	other threads:[~2020-11-25 13:57 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <152303245198.3233.1033096993665779324.malonedeb@wampee.canonical.com>
2020-11-23 15:17 ` [Bug 1761798] Re: live migration intermittently fails in CI with "VQ 0 size 0x80 Guest index 0x12c inconsistent with Host index 0x134: delta 0xfff8" Balazs Gibizer
2020-11-23 15:30 ` sean mooney
2020-11-23 16:56 ` Kashyap Chamarthy
2020-11-24 12:17 ` Dr. David Alan Gilbert
2020-11-25 13:44 ` Balazs Gibizer [this message]
2020-11-25 14:03 ` Dr. David Alan Gilbert
2021-05-10  4:32 ` Thomas Huth
2021-05-19  9:53 ` ignazio
2021-05-19 15:18 ` ignazio
2021-05-19 15:50 ` Dr. David Alan Gilbert
2021-08-25  7:28 ` Thomas Huth
2021-10-25  4:17 ` Launchpad Bug Tracker
2021-10-25  4:17 ` Launchpad Bug Tracker

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