====== CEPH inline compression ======

[[https://docs.ceph.com/en/latest/rados/configuration/bluestore-config-ref/#inline-compression]]

[[https://www.redhat.com/en/blog/red-hat-ceph-storage-33-bluestore-compression-performance|BlueStore compression performance]]


<code bash>
ceph osd pool set rbd compression_algorithm snappy
ceph osd pool set rbd compression_mode aggressive
</code>

Check compression ratios:
<code bash>
ceph daemon osd.2 perf dump | egrep -i "bluestore_compressed|bluestore_allocated|bluestore_stored|compress_.*_count"
</code>

or
<code bash>
ceph daemon osd.0 perf dump | egrep -i "bluestore_compressed|bluestore_allocated|bluestore_stored|compress_.*_count|bluestore_write_big|bluestore_write_small"
</code>