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OpenStack: During upgrading ONTAP, VM disks switched to read-only mode

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openstack
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virt
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Applies to

  • OpenStack 2023.1 Antelope
  • ONTAP 9.15.1P7

Issue

  • During ONTAP upgrade from version 9.12.1 to 9.15.1P7, VMs had their disks switched to read-only mode.
  •  VMs hang during the upgrade.
  • Reboot the VMs to make them operational again

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