diff --git a/README.md b/README.md index 16f3f63..a881cdb 100644 --- a/README.md +++ b/README.md @@ -3953,10 +3953,31 @@ True
What is the workflow of retrieving data from Ceph?
+The work flow is as follows: + +1. The client sends a request to the ceph cluster to retrieve data: +> **Client could be any of the following** +>> * Ceph Block Device +>> * Ceph Object Gateway +>> * Any third party ceph client + + +2. The client retrieves the latest cluster map from the Ceph Monitor +3. The client uses the CRUSH algorithm to map the object to a placement group. The placement group is then assigned to a OSD. +4. Once the placement group and the OSD Daemon are determined, the client can retrieve the data from the appropriate OSD + +
-What is the workflow of retrieving data from Ceph?
+What is the workflow of writing data to Ceph?
+The work flow is as follows: + +1. The client sends a request to the ceph cluster to retrieve data +2. The client retrieves the latest cluster map from the Ceph Monitor +3. The client uses the CRUSH algorithm to map the object to a placement group. The placement group is then assigned to a Ceph OSD Daemon dynamically. +4. The client sends the data to the primary OSD of the determined placement group. If the data is stored in an erasure-coded pool, the primary OSD is responsible for encoding the object into data chunks and coding chunks, and distributing them to the other OSDs. +