Hello I''m currently doing some tuning on my client nodes after the filesystem is mounted, using ''lctl set_param''. I know ''lctl conf_param'' ables to store some tunings in the MGS config files and the clients apply them automatically at mount time. Can I do this for two examples: - lctl set_param osc.*.checksums=0 - lctl set_param ldlm.namespaces.*.lru_size=400 (the second one is the most important) Thanks in advance -- Aurelien Degremont
On Nov 13, 2008 10:43 +0100, Aurelien Degremont wrote:> I''m currently doing some tuning on my client nodes after the filesystem > is mounted, using ''lctl set_param''. > I know ''lctl conf_param'' ables to store some tunings in the MGS config > files and the clients apply them automatically at mount time. > > Can I do this for two examples: > - lctl set_param osc.*.checksums=0 > - lctl set_param ldlm.namespaces.*.lru_size=400In fact "conf_param" should take effect on all clients within a few seconds of it being set on the MGS, even while the filesystem is mounted. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.
Andreas Dilger a ?crit :>> Can I do this for two examples: >> - lctl set_param osc.*.checksums=0 >> - lctl set_param ldlm.namespaces.*.lru_size=400 > > In fact "conf_param" should take effect on all clients within a few > seconds of it being set on the MGS, even while the filesystem is mounted.Yes, this is what I want, but what is the correct syntax in these examples ? The LustreManual is not clear on this point. I see how tune server targets with lctl conf_param, but not a client conf file... -- Aurelien Degremont CEA