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[Bug 1794661] [NEW] Cannot delete attachment for an orphan volume

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Liang Fang <1794661@xxxxxxxxxxxxxxxxxx>
Date: Thu, 27 Sep 2018 05:56:55 -0000
Reply-to: Bug 1794661 <1794661@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Public bug reported:

When the attached instance is lost, the related cinder volume will be
orphan and cannot be delete any more. This may happen when the instance
is removed but this information hadn't been transferred to cinder, e.g.
maybe network issue. User is not able to delete the orphan volume
because there're still some attachment with it. So user need to remove
the attachment for the volume first.

The issue is: when user try to remove the attachment by click the button
"Manage Attachments" for the orphan volume, GUI just shows: "Error:
Unable to retrieve volume information. ", and cannot open the "Manage
Attachments" dialog.

Some info may help for this bug:
To list the attachment: python-cinderclient\cinderclient\v3\attachments.py:VolumeAttachmentManager:list()
To delete an attachment: python-cinderclient\cinderclient\v3\attachments.py:VolumeAttachmentManager:delete()

** Affects: horizon
Importance: Undecided
Status: New

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https://bugs.launchpad.net/bugs/1794661

Title:
Cannot delete attachment for an orphan volume

Status in OpenStack Dashboard (Horizon):
New

Bug description:
When the attached instance is lost, the related cinder volume will be
orphan and cannot be delete any more. This may happen when the
instance is removed but this information hadn't been transferred to
cinder, e.g. maybe network issue. User is not able to delete the
orphan volume because there're still some attachment with it. So user
need to remove the attachment for the volume first.

The issue is: when user try to remove the attachment by click the
button "Manage Attachments" for the orphan volume, GUI just shows:
"Error: Unable to retrieve volume information. ", and cannot open the
"Manage Attachments" dialog.

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