[Openstack-operators] rbd ephemeral storage, very slow deleting...

Abel Lopez alopgeek at gmail.com
Wed Sep 24 20:29:18 UTC 2014


This is expected behavior, unfortunately.
I spoke to the ceph guys about this last year. When you delete an ‘image’ from a pool, the monitors (IIRC) don’t instantly know where all the segments are across all the OSDs, so it takes a while to find/delete each one.

On Sep 24, 2014, at 12:45 PM, Jonathan Proulx <jon at jonproulx.com> wrote:

> Hi All,
> 
> Just started experimenting with RBD (ceph) back end for ephemeral
> storage on some of my compute nodes.
> 
> I have it launching instances just fine, but when I try and delete
> them libvirt shows the instances are gone, but OpensStack lists them
> in 'deleting' state and the rbd process on the hypervisor spins madly
> at about 300% cpu ...
> 
> ...and now approx 18min later they have finally fully terminated, why so long?
> 
> -Jon
> 
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> OpenStack-operators at lists.openstack.org
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