[Gluster-users] parallel-readdir is not recognized in GlusterFS 3.12.4

[Raghavendra Gowdappa]

----- Original Message -----
> From: "Pranith Kumar Karampuri" <pkarampu at redhat.com>
> To: "Alan Orth" <alan.orth at gmail.com>
> Cc: "gluster-users" <gluster-users at gluster.org>
> Sent: Saturday, January 27, 2018 7:31:30 AM
> Subject: Re: [Gluster-users] parallel-readdir is not recognized in GlusterFS	3.12.4
> 
> Adding devs who work on it
> 
> On 23 Jan 2018 10:40 pm, "Alan Orth" < alan.orth at gmail.com > wrote:
> 
> 
> 
> Hello,
> 
> I saw that parallel-readdir was an experimental feature in GlusterFS version
> 3.10.0, became stable in version 3.11.0, and is now recommended for small
> file workloads in the Red Hat Gluster Storage Server documentation[2]. I've
> successfully enabled this on one of my volumes but I notice the following in
> the client mount log:
> 
> [2018-01-23 10:24:24.048055] W [MSGID: 101174]
> [graph.c:363:_log_if_unknown_option] 0-homes-readdir-ahead-1: option
> 'parallel-readdir' is not recognized
> [2018-01-23 10:24:24.048072] W [MSGID: 101174]
> [graph.c:363:_log_if_unknown_option] 0-homes-readdir-ahead-0: option
> 'parallel-readdir' is not recognized
> 

This is fixed by patch:
https://review.gluster.org/#/c/18572/

Please note that the log message is harmless and parallel-readdir is enabled even with this log. You can verify that by looking into gluster volume configuration logged in glusterfs logs. If parallel-readdir is enabled, you should see a readdir-ahead translator loaded as a parent of each DHT subvolume.

> The GlusterFS version on the client and server is 3.12.4. What is going on?
> 
> [0]
> https://github.com/gluster/glusterfs/blob/release-3.10/doc/release-notes/3.10.0.md
> [1]
> https://github.com/gluster/glusterfs/blob/release-3.11/doc/release-notes/3.11.0.md
> [2]
> https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.3/html/administration_guide/small_file_performance_enhancements
> 
> Thank you,
> 
> 
> --
> 
> 
> Alan Orth
> alan.orth at gmail.com
> https://picturingjordan.com
> https://englishbulgaria.net
> https://mjanja.ch
> 
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