[Gluster-users] Parallel process hang on gluster volume

[nico at furyweb.fr]

I compared 4.1.5 and 3.12.15, there's no pb with 3.12.15 client. 

Regards, 
Nicolas. 


De: "Nithya Balachandran" <nbalacha at redhat.com> 
À: nico at furyweb.fr 
Cc: "gluster-users" <gluster-users at gluster.org> 
Envoyé: Vendredi 5 Juillet 2019 08:09:52 
Objet: Re: [Gluster-users] Parallel process hang on gluster volume 

Did you see this behaviour with previous Gluster versions? 
Regards, 
Nithya 

On Wed, 3 Jul 2019 at 21:41, < [ mailto:nico at furyweb.fr | nico at furyweb.fr ] > wrote: 


Am I alone having this problem ? 

----- Mail original ----- 
De: [ mailto:nico at furyweb.fr | nico at furyweb.fr ] 
À: "gluster-users" < [ mailto:gluster-users at gluster.org | gluster-users at gluster.org ] > 
Envoyé: Vendredi 21 Juin 2019 09:48:47 
Objet: [Gluster-users] Parallel process hang on gluster volume 

I encounterd an issue on production servers using GlusterFS servers 5.1 and clients 4.1.5 when several process write at the same time on a gluster volume. 

With more than 48 process writes on the volume at the same time, they are blocked in D state (uninterruptible sleep), I guess some volume settings have to be tuned but can't figure out which. 

The client is using op-version 40100 on this volume 
Below are volume info, volume settings and ps output on blocked processes. 

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