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

[Seyeong Kim]

** Patch added: "lp1994521_jammy.debdiff"
   https://bugs.launchpad.net/ubuntu/+source/cinder/+bug/1994521/+attachment/5752219/+files/lp1994521_jammy.debdiff

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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:
  New
Status in cinder source package in Jammy:
  New

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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