Am 16.12.20 um 21:30 schrieb Alan Somers:
On Sat, Sep 19, 2020 at 2:47 PM Allan Jude <allanj...@freebsd.org
<mailto:allanj...@freebsd.org>> wrote:
Author: allanjude
Date: Sat Sep 19 20:46:56 2020
New Revision: 365917
URL: https://svnweb.freebsd.org/changeset/base/365917
<https://svnweb.freebsd.org/changeset/base/365917>
Log:
MFS r365689,r365808,r365860
MFOpenZFS: Introduce read/write kstats per dataset
The following patch introduces a few statistics on reads and writes
grouped by dataset. These statistics are implemented as kstats
(backed by aggregate sums for performance) and can be retrieved by
using the dataset objset ID number. The motivation for this change is
to provide some preliminary analytics on dataset usage/performance.
Reviewed-by: Richard Elling <richard.ell...@richardelling.com>
Reviewed-by: Brian Behlendorf <behlendo...@llnl.gov
<mailto:behlendo...@llnl.gov>>
Reviewed by: Matthew Ahrens <mahr...@delphix.com
<mailto:mahr...@delphix.com>>
Signed-off-by: Serapheim Dimitropoulos <seraph...@delphix.com
<mailto:seraph...@delphix.com>>
openzfs/zfs@a448a2557ec4938ed6944c7766fe0b8e6e5f6456
Also contains parts of:
MFOpenZFS: Connect dataset_kstats for FreeBSD
Example output:
kstat.zfs.mypool.dataset.objset-0x10b.nread: 150528
kstat.zfs.mypool.dataset.objset-0x10b.reads: 48
kstat.zfs.mypool.dataset.objset-0x10b.nwritten: 134217728
kstat.zfs.mypool.dataset.objset-0x10b.writes: 1024
kstat.zfs.mypool.dataset.objset-0x10b.dataset_name:
mypool/datasetname
Reviewed-by: Ryan Moeller <r...@ixsystems.com>
Reviewed by: Sean Eric Fagan <s...@ixsystems.com
<mailto:s...@ixsystems.com>>
Reviewed-by: Serapheim Dimitropoulos <seraph...@delphix.com
<mailto:seraph...@delphix.com>>
Reviewed-by: Brian Behlendorf <behlendo...@llnl.gov
<mailto:behlendo...@llnl.gov>>
Signed-off-by: Allan Jude <al...@klarasystems.com
<mailto:al...@klarasystems.com>>
openzfs/zfs@4547fc4e071ceb1818b3a46c3035b923e06e5390
Approved by: re (gjb)
Relnotes: yes
Sponsored by: Klara Inc.
This sounds quite useful! I've often wished that I could see
per-dataset traffic statistics. Are there any user-friendly frontends
to this? Like zfs-stats, or an updated zpool iostat?
I have updated zfs-stats for OpenZFS a few months ago and I'd be willing to add printing these new values to the port. The maintainer of the upstream version had little interest to accept my patches into his repository (after sending several request) and thus I have added a large patch to the port. If further changes are applied, I might fork the upstream repository and base the zfs-stats port on that fork (but I did not want to grab it without the current maintainer agreeing ...) Regards, STefan
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