Re: provisioning clients in teuthology with an extra local filesystem

[David Galloway <dgallowa@redhat.com>]

On 12/1/20 10:24 AM, Jeff Layton wrote:
> On Tue, 2020-12-01 at 10:22 -0500, David Galloway wrote:
>> On 12/1/20 9:55 AM, Jeff Layton wrote:
>>> I've been working on a patch series to overhaul the fscache code in the
>>> kclient. I also have this (really old) tracker to add fscache testing to
>>> teuthology:
>>>
>>>     https://tracker.ceph.com/issues/6373
>>>
>>> It would be ideal if the clients in such testing had a dedicated
>>> filesystem mounted on /var/cache/fscache, so that if it fills up it
>>> doesn't take down the rootfs with it. We'll also need to have
>>> cachefilesd installed and running in the client hosts.
>>>
>>> Is it possible to do this in teuthology? How would I approach this?
>>>
>>
>> I think I can make this happen pretty easily in ceph-cm-ansible.  What
>> I'd need from you is desired filesystem type and size.  Once I'm done
>> with my end, we'll need to create a cephlab.ansible overrides yaml
>> fragment to stick in that suite's qa directory.
>>
> 
> Ok, cool:
> 
> fstype: xfs or ext4 (either is fine)
> size: ~50g or so would be ideal, but we can probably get away with less 
>       if necessary
> 

Getting there...

https://github.com/ceph/ceph-cm-ansible/pull/592

Can you give me an optimal cachefilesd.conf and I'll set that up in
ceph-cm-ansible too?