Hi Robert, As long as you triple-check permissions on the cache tier (should be the same as your actual storage pool) you should be fine. In our setup I applied this a few times. The first time I made the assumption permissions would be inherited or not applicable but IOPs get redirected towards the tier and therefore permissions should be sane. It stopped all IOPs until I removed the overlay again. But alas; some VMs died already. Later on I extra checked the permissions and all was well. K. On 16-09-2019 13:12, Eikermann, Robert wrote: > That would be the case for me. I think all data during one day would fit into the cache, and we could slowly flush back over night (or even over the weekend). But my impression is, I would have to test it. So my initial question: Do I have to stop all VMs before activating the cache? And restart one by one with the cache enabled? _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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