[Bug 1994521] Re: HPE3PAR: Failing to clone a volume having children

[Seyeong Kim]

** Patch added: "lp2017748_focal_yoga.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/cinder/+bug/1994521/+attachment/5752220/+files/lp2017748_focal_yoga.debdiff

** Also affects: cinder (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: cinder (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Changed in: cinder (Ubuntu Mantic)
       Status: New => Fix Released

** Changed in: cinder (Ubuntu Noble)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1994521

Title:
  HPE3PAR: Failing to clone a volume having children

Status in Cinder:
  Fix Released
Status in cinder package in Ubuntu:
  Fix Released
Status in cinder source package in Jammy:
  New
Status in cinder source package in Mantic:
  Fix Released
Status in cinder source package in Noble:
  Fix Released

Bug description:
  When we try to delete a snapshot, we flatten it's dependent volumes by copying them to a new volume and deleting the original one.
  We fail to copy the volume when it has children and it is not handled in the code.

  : hpe3parclient.exceptions.HTTPConflict: Conflict (HTTP 409) 32 -
  volume has a child

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