yahoo-eng-team team mailing list archive

[Lee Yarwood <1899835@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Description
===========

When live migrating an instance with volumes attached pre_live_migration
on the destination will initially attempt to map these volumes to the
destination by creating a volume attachment (cinderv3) or calling
initialize_connection (cinderv2).

At present if either call fails the generic live migration rollback code
is called and an attempt is made to disconnect volumes from the
destination ignoring the fact that they have not been mapped or
connected to by that host.

Steps to reproduce
==================

* Live migrate an instance with volumes attached, ensuring calls to
either cinder API fail during pre_live_migration.

Expected result
===============
No attempt is made to disconnect volumes from the destination.

Actual result
=============
n-cpu attempts and fails to disconnect volumes from the destination using connection_info from the source bdms.

Environment
===========
1. Exact version of OpenStack you are running. See the following
  list for all releases: http://docs.openstack.org/releases/

117508129461436e13c148bb068b0775d67e85d3

2. Which hypervisor did you use?
   (For example: Libvirt + KVM, Libvirt + XEN, Hyper-V, PowerKVM, ...)
   What's the version of that?

Libvirt

2. Which storage type did you use?
   (For example: Ceph, LVM, GPFS, ...)
   What's the version of that?

N/A

3. Which networking type did you use?
   (For example: nova-network, Neutron with OpenVSwitch, ...)

N/A

Logs & Configs
==============

** Affects: nova
     Importance: Undecided
     Assignee: Lee Yarwood (lyarwood)
         Status: New


** Tags: cinder libvirt live-migration needs-functional-test volumes

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https://bugs.launchpad.net/bugs/1899835

Title:
  disconnect_volume called during early rollback from pre_live_migration
  failure on destination

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========

  When live migrating an instance with volumes attached
  pre_live_migration on the destination will initially attempt to map
  these volumes to the destination by creating a volume attachment
  (cinderv3) or calling initialize_connection (cinderv2).

  At present if either call fails the generic live migration rollback
  code is called and an attempt is made to disconnect volumes from the
  destination ignoring the fact that they have not been mapped or
  connected to by that host.

  Steps to reproduce
  ==================

  * Live migrate an instance with volumes attached, ensuring calls to
  either cinder API fail during pre_live_migration.

  Expected result
  ===============
  No attempt is made to disconnect volumes from the destination.

  Actual result
  =============
  n-cpu attempts and fails to disconnect volumes from the destination using connection_info from the source bdms.

  Environment
  ===========
  1. Exact version of OpenStack you are running. See the following
    list for all releases: http://docs.openstack.org/releases/

  117508129461436e13c148bb068b0775d67e85d3

  2. Which hypervisor did you use?
     (For example: Libvirt + KVM, Libvirt + XEN, Hyper-V, PowerKVM, ...)
     What's the version of that?

  Libvirt

  2. Which storage type did you use?
     (For example: Ceph, LVM, GPFS, ...)
     What's the version of that?

  N/A

  3. Which networking type did you use?
     (For example: nova-network, Neutron with OpenVSwitch, ...)

  N/A

  Logs & Configs
  ==============

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