Hello, The online Lustre manual recommends that Lustre targets are started in this order[1]: MGT, MDT, OSTs, clients. [1]: http://build.whamcloud.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml#dbdoclet.50438194_24122 Now we are setting up an HA cluster with Pacemaker, and a strict ordering directive ("order ... Mandatory: ostXX mdt mgt") results in a complete restart of all targets if the MGT is migrated. In my experience (with Lustre 1.8.5) this is most of the time unnecessary, and Lustre can recover from a single target restart. However, we have recently switched to Lustre 2.4.3 and things might have changed. So the question is: is this order strict (in Lustre 2.4.3), or can a target be stopped and restarted on another node without affecting the targets running on other nodes? Thanks for any help! Riccardo -- Riccardo Murri http://www.gc3.uzh.ch/people/rm Grid Computing Competence Centre University of Zurich Winterthurerstrasse 190, CH-8057 Zürich (Switzerland) Tel: +41 44 635 4222 Fax: +41 44 635 6888 _______________________________________________ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss