El 27/5/21 a las 9:24, Dan van der Ster escribió:
On Thu, May 27, 2021 at 9:21 AM Andres Rojas Guerrero <a.rojas@xxxxxxx> wrote:El 26/5/21 a las 16:51, Dan van der Ster escribió:I see you have two active MDSs. Is your cluster more stable if you use only one single active MDS?Good question!! I read form Ceph Doc: "You should configure multiple active MDS daemons when your metadata performance is bottlenecked on the single MDS that runs by default." "Workloads that typically benefit from a larger number of active MDS daemons are those with many clients, perhaps working on many separate directories." I have more or less 25 concurrent clients, but working in the same directory, Is that number a lot of clients? And I assumed that two are always better than one.25 isn't many clients, but if they are operating in the same directory it will create a lot of contention between the two MDSs, which might explain some of the issues you observe. I recommend that you reduce back to 1 active mds and observe the system stability and performance. -- dan
-- ******************************************************* Andrés Rojas Guerrero Unidad Sistemas Linux Area Arquitectura Tecnológica Secretaría General Adjunta de Informática Consejo Superior de Investigaciones Científicas (CSIC) Pinar 19 28006 - Madrid Tel: +34 915680059 -- Ext. 990059 email: a.rojas@xxxxxxx ID comunicate.csic.es: @50852720l:matrix.csic.es *******************************************************
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