Bug 1907641 - [RFE] New `ceph fs top` command
Summary: [RFE] New `ceph fs top` command
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: CephFS
Version: 5.0
Hardware: All
OS: All
low
low
Target Milestone: ---
: 5.0
Assignee: Venky Shankar
QA Contact: Amarnath
Amrita
URL:
Whiteboard:
Depends On:
Blocks: 1932755 1959686
TreeView+ depends on / blocked
 
Reported: 2020-12-14 22:12 UTC by Patrick Donnelly
Modified: 2021-09-03 04:56 UTC (History)
7 users (show)

Fixed In Version: ceph-16.1.0-8.el8cp
Doc Type: Enhancement
Doc Text:
.The `cephfs-top` tool is supported With this release, the `cephfs-top` tool is introduced. Ceph provides a `top(1)` like utility to display the various Ceph File System(CephFS) metrics in realtime. The `cephfs-top` is a curses based python script that uses the `stats` plugin in the Ceph Manager to fetch and display the metrics. CephFS clients periodically forward various metrics to the Ceph Metadata Servers (MDSs), which then forward these metrics to MDS rank zero for aggregation. These aggregated metrics are then forwarded to the Ceph Manager for consumption. Metrics are divided into two categories; global and per-mds. Global metrics represent a set of metrics for the file system as a whole for example client read latency, whereas per-mds metrics are for a specific MDS rank for example the number of subtrees handled by an MDS. Currently, global metrics are tracked and displayed. The `cephfs-top` command does not work reliably with multiple Ceph File Systems. See the link:{cephfs-guide}#using-the-cephfs-top-utility_fs[_Using the `cephfs-top` utility_] section in the _{storage-product} File System Guide_ for more information.
Clone Of:
Environment:
Last Closed: 2021-08-30 08:27:16 UTC
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github ceph ceph pull 38108 0 None closed `cephfs-top` utility 2021-02-16 16:20:41 UTC
Red Hat Issue Tracker RHCEPH-1204 0 None None None 2021-08-30 00:16:41 UTC
Red Hat Product Errata RHBA-2021:3294 0 None None None 2021-08-30 08:27:44 UTC

Description Patrick Donnelly 2020-12-14 22:12:48 UTC
Description of problem:

Front-end utility in-progress: https://github.com/ceph/ceph/pull/38108

This command shows the currently connected sessions to CephFS. The session information includes cache utilization and other metrics.

The command is a curses application so there's no UI/dashboard frontend yet.

Comment 1 Ken Dreyer (Red Hat) 2021-01-12 23:04:57 UTC
We'll take this in the next pacific snapshot downstream.

Comment 3 Ken Dreyer (Red Hat) 2021-01-26 21:08:57 UTC
The new cephfs-top package is in today's RHCEPH-5.0-RHEL-8-20210126.ci.0 compose.

Comment 10 errata-xmlrpc 2021-08-30 08:27:16 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat Ceph Storage 5.0 bug fix and enhancement), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:3294


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