This bug was fixed in the package qemu - 1:4.2-3ubuntu6.25 --------------- qemu (1:4.2-3ubuntu6.25) focal; urgency=medium
[ Brett Milford ] * d/p/u/lp1994002-migration-Read-state-once.patch: Fix for libvirt error 'migration was active, but no RAM info was set' (LP: #1994002) [ Mauricio Faria de Oliveira ] * d/p/u/lp2009048-vfio_map_dma_einval_amd_iommu_1tb.patch: Add hint to VFIO_MAP_DMA error on AMD IOMMU for VMs with ~1TB+ RAM (LP: #2009048) -- Mauricio Faria de Oliveira <m...@canonical.com> Thu, 02 Mar 2023 18:07:21 -0300 ** Changed in: qemu (Ubuntu Bionic) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of SE ("STS") Sponsors, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1994002 Title: [SRU] migration was active, but no RAM info was set Status in Ubuntu Cloud Archive: New Status in Ubuntu Cloud Archive ussuri series: New Status in qemu package in Ubuntu: Fix Released Status in qemu source package in Bionic: Fix Released Status in qemu source package in Focal: Fix Released Status in qemu source package in Jammy: Fix Released Status in qemu source package in Kinetic: Fix Released Bug description: [Impact] * While live-migrating many instances concurrently, libvirt sometimes return `internal error: migration was active, but no RAM info was set:` * Effects of this bug are mostly observed in large scale clusters with a lot of live migration activity. * Has second order effects for consumers of migration monitor such as libvirt and openstack. [Test Case] Synthetic reproducer with GDB in comment #21. Steps to Reproduce: 1. live evacuate a compute 2. live migration of one or more instances fails with the above error N.B Due to the nature of this bug it is difficult consistently reproduce. In an environment where it has been observed it is estimated to occur approximately 1/1000 migrations. [Where problems could occur] * In the event of a regression the migration monitor may report an inconsistent state. [Original Bug Description] While live-migrating many instances concurrently, libvirt sometimes return internal error: migration was active, but no RAM info was set: ~~~ 2022-03-30 06:08:37.197 7 WARNING nova.virt.libvirt.driver [req-5c3296cf-88ee-4af6-ae6a-ddba99935e23 - - - - -] [instance: af339c99-1182-4489-b15c-21e52f50f724] Error monitoring migration: internal error: migration was active, but no RAM info was set: libvirt.libvirtError: internal error: migration was active, but no RAM info was set ~~~ From upstream bug: https://bugzilla.redhat.com/show_bug.cgi?id=2074205 [Other Information] Related bug: https://bugs.launchpad.net/nova/+bug/1982284 To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1994002/+subscriptions -- Mailing list: https://launchpad.net/~sts-sponsors Post to : sts-sponsors@lists.launchpad.net Unsubscribe : https://launchpad.net/~sts-sponsors More help : https://help.launchpad.net/ListHelp