Revert "squid: doc: document metrics exported by CephFS"

doc/cephfs/index.rst

@@ -193,7 +193,6 @@ Developer Guides
     Client's Capabilities <capabilities>
     Java and Python bindings <api/index>
     Mantle <mantle>
-    Metrics <metrics>
 
 
 .. raw:: html

doc/cephfs/metrics.rst

@@ -1,132 +0,0 @@
-.. _cephfs_metrics:
-
-Metrics
-=======
-
-CephFS uses :ref:`Perf Counters` to track metrics. The counters can be labeled (:ref:`Labeled Perf Counters`).
-
-Client Metrics
---------------
-
-CephFS exports client metrics as :ref:`Labeled Perf Counters`, which could be used to monitor the client performance. CephFS exports the below client metrics.
-
-.. list-table:: Client Metrics
-   :widths: 25 25 75
-   :header-rows: 1
-
-   * - Name
-     - Type
-     - Description
-   * - num_clients
-     - Gauge
-     - Number of client sessions
-   * - cap_hits
-     - Gauge
-     - Percentage of file capability hits over total number of caps
-   * - cap_miss
-     - Gauge
-     - Percentage of file capability misses over total number of caps
-   * - avg_read_latency
-     - Gauge
-     - Mean value of the read latencies
-   * - avg_write_latency
-     - Gauge
-     - Mean value of the write latencies
-   * - avg_metadata_latency
-     - Gauge
-     - Mean value of the metadata latencies
-   * - dentry_lease_hits
-     - Gauge
-     - Percentage of dentry lease hits handed out over the total dentry lease requests
-   * - dentry_lease_miss
-     - Gauge
-     - Percentage of dentry lease misses handed out over the total dentry lease requests
-   * - opened_files
-     - Gauge
-     - Number of opened files
-   * - opened_inodes
-     - Gauge
-     - Number of opened inodes
-   * - pinned_icaps
-     - Gauge
-     - Number of pinned Inode Caps
-   * - total_inodes
-     - Gauge
-     - Total number of Inodes
-   * - total_read_ops
-     - Gauge
-     - Total number of read operations generated by all process
-   * - total_read_size
-     - Gauge
-     - Number of bytes read in input/output operations generated by all process
-   * - total_write_ops
-     - Gauge
-     - Total number of write operations generated by all process
-   * - total_write_size
-     - Gauge
-     - Number of bytes written in input/output operations generated by all processes
-
-Getting Metrics
-===============
-
-The metrics could be scraped from the MDS admin socket as well as using the tell interface. The ``mds_client_metrics-<fsname>`` section in the output of ``counter dump`` command displays the metrics for each client as shown below::
-
-    "mds_client_metrics": [
-        {
-            "labels": {
-                "fs_name": "<fsname>",
-                "id": "14213"
-            },
-            "counters": {
-                "num_clients": 2
-            }
-        }
-    ],
-    "mds_client_metrics-<fsname>": [
-        {
-            "labels": {
-                "client": "client.0",
-                "rank": "0"
-            },
-            "counters": {
-                "cap_hits": 5149,
-                "cap_miss": 1,
-                "avg_read_latency": 0.000000000,
-                "avg_write_latency": 0.000000000,
-                "avg_metadata_latency": 0.000000000,
-                "dentry_lease_hits": 0,
-                "dentry_lease_miss": 0,
-                "opened_files": 1,
-                "opened_inodes": 2,
-                "pinned_icaps": 2,
-                "total_inodes": 2,
-                "total_read_ops": 0,
-                "total_read_size": 0,
-                "total_write_ops": 4836,
-                "total_write_size": 633864192
-            }
-        },
-        {
-            "labels": {
-                "client": "client.1",
-                "rank": "0"
-            },
-            "counters": {
-                "cap_hits": 3375,
-                "cap_miss": 8,
-                "avg_read_latency": 0.000000000,
-                "avg_write_latency": 0.000000000,
-                "avg_metadata_latency": 0.000000000,
-                "dentry_lease_hits": 0,
-                "dentry_lease_miss": 0,
-                "opened_files": 1,
-                "opened_inodes": 2,
-                "pinned_icaps": 2,
-                "total_inodes": 2,
-                "total_read_ops": 0,
-                "total_read_size": 0,
-                "total_write_ops": 3169,
-                "total_write_size": 415367168
-            }
-        }
-    ]