On 18-04-25 02:29 PM, Marc Schöchlin wrote:
Hello list,

we are trying to integrate a storage repository in xenserver.
(i also describe the problem as a issue in the ceph bugtracker:
https://tracker.ceph.com/issues/23853)

Summary:

The slowness is a real pain for us, because this prevents the xen
storage repository to work efficently.
Gathering information for XEN Pools with hundreds of virtual machines
(using "--format json") would be a real pain...
The high user time consumption and the really huge amount of threads
suggests that there is something really inefficient in the "rbd" utility.

So what can i do to make "rbd ls -l" faster or to get comparable
information regarding snapshot hierarchy information?

Can you run this command with extra argument "--rbd_concurrent_management_ops=1" and share the timing of that?

--
Piotr Dałek
piotr.da...@corp.ovh.com
https://www.ovh.com/us/
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