Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
DescriptionMiroslav Rezanina
2021-08-30 05:57:05 UTC
+++ This bug was initially created as a clone of Bug #1998945 +++
After we rebase to QEMU 6.1 we need to ensure old machine types stays compatible with previous version.
Check the changes and prepare fix for keeping machine types compatible.
FWIW, looks like there is not much to do for s390x here: hw_compat_6_0 only contains entries that are not related to s390x, so this should not affect the s390x machine type.
Verified forth and back migration works with:
Source host
qemu-kvm-6.0.0-29.module+el8.5.0+12386+43574bac.s390x
Destination host
qemu-kvm-6.1.0-3.module+el8.6.0+12982+5e169f40.s390x
Guest
s390-ccw-virtio-rhel8.5.0
kernel-4.18.0-348.el8.s390x
Auto test case
virsh.migrate_vm.positive_testing.live_migration.bi_directional.with_postcopy
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2022:1759