Hello folks!
I've been working on a Ceph cluster for a few months now, and finally getting it to a point where we can put it into production. We're looking at possibly using an all flash storage system and I'd like to play around with using the inline compression feature with Bluestore.
Now from what I've read, I know that the compression only happens at the write phase for data going into a pool and you cannot compress an existing pool without moving the data out then back into the pool.
When configuring the pool compression settings, there's mention of ensuring the 'rados IO allocation hints' are enabled. I haven't been able to find any documentation that tells me how to do this.
I found the reference to it here: http://docs.ceph.com/docs/mimic/rados/configuration/bluestore-config-ref/#inline-compression
Which links to here: http://docs.ceph.com/docs/mimic/rados/api/librados/#c.rados_set_alloc_hint
Does anyone know if this is already enabled by default with Proxmox, or do I have to modify a configuration file somewhere to enable this?
I've been working on a Ceph cluster for a few months now, and finally getting it to a point where we can put it into production. We're looking at possibly using an all flash storage system and I'd like to play around with using the inline compression feature with Bluestore.
Now from what I've read, I know that the compression only happens at the write phase for data going into a pool and you cannot compress an existing pool without moving the data out then back into the pool.
When configuring the pool compression settings, there's mention of ensuring the 'rados IO allocation hints' are enabled. I haven't been able to find any documentation that tells me how to do this.
I found the reference to it here: http://docs.ceph.com/docs/mimic/rados/configuration/bluestore-config-ref/#inline-compression
Which links to here: http://docs.ceph.com/docs/mimic/rados/api/librados/#c.rados_set_alloc_hint
Does anyone know if this is already enabled by default with Proxmox, or do I have to modify a configuration file somewhere to enable this?
