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Bug 1066167

Summary:	GlusterFS Snapshot delete of attached volume fails if it runs > 10 minutes
Product:	Red Hat OpenStack	Reporter:	Eric Harney <eharney>
Component:	openstack-nova	Assignee:	Eric Harney <eharney>
Status:	CLOSED UPSTREAM	QA Contact:	nlevinki <nlevinki>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	4.0	CC:	bengland, eharney, ndipanov, nlevinki, scohen, sgordon, yeylon, yrabl
Target Milestone:	---
Target Release:	6.0 (Juno)
Hardware:	All
OS:	All
Whiteboard:	storage
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Nova code change to correspond to Cinder fix in bug 1056037.	Story Points:	---
Clone Of:	1056037	Environment:
Last Closed:	2014-10-09 13:26:01 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1045196, 1056037

Description Eric Harney 2014-02-17 22:03:02 UTC

+++ This bug was initially created as a clone of Bug #1056037 +++

...snip...

--- Additional comment from Eric Harney on 2014-01-21 13:57:22 EST ---

The basic problem here is that Cinder has a fixed time out when waiting for snapshot_delete operations on the Nova side to complete.  If they take too long (even when things are functioning correctly) Cinder will prematurely fail the operation.

To fix this, we need to have Nova send back updates of job percent complete while the block job is in-progress.  Cinder can then reset its timeout window based on these updates.  (This should be doable without changing how the APIs work between Cinder and Nova today.)

Comment 2 Eric Harney 2014-03-10 14:14:41 UTC

Moving along with bug 1056037.

Comment 3 Ben England 2014-04-07 19:07:53 UTC

why does it take so long to delete a snapshot?  Does it have to scrub the snapshot file before deleting it for security reasons?

Comment 4 Eric Harney 2014-04-07 19:28:01 UTC

(In reply to Ben England from comment #3)

We are forced to do a blockRebase rather than a commit when deleting the only remaining snapshot, which means the full volume data must be copied.  This is a libvirt limitation.

Comment 6 Sean Cohen 2014-10-09 13:26:01 UTC

This likely indicates using a version of libvirt which had known bugs in it in this area. Closing pending further info on reproduction.