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Hello, Andrew & Joke:

I have the same problem.

If I enable

show_image_direct_url = True
show_multiple_locations = True

on /etc/glance/glance-api.conf

When I create an instance from image, I get:

[Error: Build of instance 5855874c-860c-4ab8-8b3f-08970e220806 aborted: 
Volume 0367557b-4efc-40ab-8fda-932ce0a9f542 did not finish being created 
even after we waited 3 seconds or 2 attempts. And its status is error.].


Thanks!


El 16/3/22 a las 10:33, Erno Kuvaja escribió:
> On Thu, Feb 24, 2022 at 2:37 PM west, andrew 
> <andrew.west-contractor at cgg.com> wrote:
>
>     Hello experts
>
>     Currently using openstack Xena and Ceph backend (Pacific 16.2.7)
>
>     It seems there is a bug (since Wallaby?) where the efficient use
>     of a CEPH Pacific RBD backend (i.e with copy-on-write-cloning) is
>     not working .
>
>     Show_image_direct_url needs to be False to create volumes (or
>     ephemeral volumes for nova)
>
>     This can of course be tremendously slow (Nova  , ephemeral root
>     disk) without copy-on-write cloning feature of Ceph.
>
>     As Ceph RBD is THE most favourite  backend for block storage in
>     openstack I am wondering how others are coping (or workarounds
>     found ?)
>
>     Which combinations of Openstack and Ceph  are known to work well
>     with copy-on-write-cloning?
>
>     How is the noted /GRAVE Security RISK  of enabling
>     /Show_image_direct_url mitigated  ?  (i.e I think , for CEPH RBD,
>     it needs to  be True to get cloning to work efficiently)
>
>     See another report of this issue here:
>
>     Re: Ceph Pacifif and Openstack Wallaby - ERROR
>     cinder.scheduler.flows.create_volume — CEPH Filesystem Users
>     (spinics.net) <https://www.spinics.net/lists/ceph-users/msg66016.html>
>
>     Thanks for any help or pointers,
>
>     Andrew West
>
>     Openstack consulting
>
>     CGG France
>
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