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  1. RHEL
  2. RHEL-78397

backport fix for double migration of a paused VM (disk activation rewrite)

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    • qemu-kvm-9.1.0-15.el9
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    • rhel-sst-virtualization-storage
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      What were you trying to do that didn't work?

      Attempting to migrate a VM paused for a second time results into an assertion failure:

       (qemu) qemu-kvm: ../block.c:6979: int bdrv_inactivate_recurse(BlockDriverState *): Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed.

      and subsequent qemu crash.

      The issue is addressed by the series ending at upstream commit:

      commit 8597af76153a87068b675d8099063c3ad8695773
Author: Peter Xu <peterx@redhat.com>
Date:   Fri Dec 6 18:08:38 2024 -0500

    migration/block: Rewrite disk activation
    
    This patch proposes a flag to maintain disk activation status globally.  It
    mostly rewrites disk activation mgmt for QEMU, including COLO and QMP
    command xen_save_devices_state.

      The crash was originally observed on OpenStack. See the original issue filed against libvirt for further information: https://issues.redhat.com/browse/RHEL-48801

      The libvirt issue will be marked as test-only to facilitate testing on the libvirt level.

              kwolf@redhat.com Kevin Wolf
              pkrempa@redhat.com Peter Krempa
              virt-maint virt-maint
              Aihua Liang Aihua Liang
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                Created:
                Updated: