Dell PowerMax - Online migration can fail
Bug #2033398 reported by
Jean Pierre Roquesalane
This bug affects 1 person
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Cinder |
In Progress
|
Undecided
|
Jean Pierre Roquesalane | ||
Bug Description
During live migration, a timeout can happen due to some slowness when executing specific functions.
In order to reduce the slowness on the Dell PowerMax backend driver and to reduce the risk of long traffic disruptions when multiple detach and attach requests are invoked, the renaming of the device when detaching can be skipped as it will be deleted afterwards.
The current logic of the delete_volume function can cause slowness and break online migration.
https:/
Please note that it only affects driver versions up through Yoga as the change was done starting Zed.
| tags: | added: drivers |
| description: | updated |
| Changed in cinder: | |
| status: | New → Confirmed |
| status: | Confirmed → In Progress |
Revision history for this message
| OpenStack Infra (hudson-openstack) wrote Fix merged to cinder (stable/yoga) | #1 |
| tags: | added: in-stable-yoga |
| Changed in cinder: | |
| assignee: | nobody → Jean Pierre Roquesalane (jproque15130) |
Revision history for this message
| OpenStack Infra (hudson-openstack) wrote Fix included in openstack/cinder 20.3.2 | #2 |
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Reviewed: https:/
Committed: https:/
Submitter: "Zuul (22348)"
Branch: stable/yoga
commit d02c88346dbb586
Author: Jean-Pierre Roquesalane <email address hidden>
Date: Wed Sep 13 15:56:15 2023 +0200
Dell PowerMax : Disabling the renaming of a volume before deletion
This change is to speed up the deletion of a volume which doesn't
require to rename the volume prior to delete it.
This removal will allow to save 15s in terms of operation time
and avoid unnecessary pausing time during migration.
This affects only version up to Yoga as this was included into a
bigger patch merged in Zed.
This is just a one line removal and doesn't affect other stuff.
Closes-Bug: #2033398
Change-Id: I80088ba4171516