Hi, I've checked the log and the issue you're having is probably this bug: https://bugs.launchpad.net/cinder/+bug/1931004 The fix is currently under review upstream. A quick solution to this issue is to set the rbd_store_chunk_size to 8 in cinder.conf which will make the stripe size of cinder same as glance. Regards, Gene Kuo ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ 在 2021年7月22日 星期四 上午 2:58，J-P Methot <jp.methot@planethoster.info> 寫道：

Hi,

As you might already know if you read this mailing list, I've been

trying to push Kolla into production for a while. This issue however

might be more Glance and Cinder related than Kolla. We're trying to

provision an Openstack Wallaby cluster on Ubuntu using Kolla and Ceph

pacific. The issue I now have is that, if I try to provision a Ceph

volume from an image stored in Ceph, I get the following error :

https://pastebin.com/59EZbxKu

By looking around a bit, I figured out that this is linked to the

following mailing list email :

https://www.spinics.net/lists/ceph-users/msg66016.html

Ceph copy on write cloning breaking because Cinder can't work

ifshow_image_direct_url is set to true is a pretty big issue, I believe.

It's possible that this has been talked about before, but there's no

other trace I could find outside of that Ceph mailing list email.

Additionally, in Kolla, setting show_image_direct_url to false doesn't

solve this issue because by default, Kolla appears to also set

show_multiple_locations to true. By setting show_multiple_locations to

false through a custom configuration, I am able to create volumes from

glance Ceph images again (images have to be re-uploaded for this to work

though). Of course, these volumes are not created through copy-on-write,

because that's broken.

I couldn't find any bug report pertaining to these issues. If they are

not known, then I would be happy to make a bug report. I would just like

to verify if this is all already known or not.

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Jean-Philippe Méthot

Senior Openstack system administrator

Administrateur système Openstack sénior

PlanetHoster inc.