On Tue, Jul 26, 2016 at 09:37:37AM +0200, Dan van der Ster wrote: > On Tue, Jul 26, 2016 at 3:52 AM, Brad Hubbard <bhubbard@xxxxxxxxxx> wrote: > >> 1./ if I try to change mon_osd_nearfull_ratio from 0.85 to 0.90, I get > >> > >> # ceph tell mon.* injectargs "--mon_osd_nearfull_ratio 0.90" > >> mon.rccephmon1: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > >> mon.rccephmon3: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > >> mon.rccephmon2: injectargs:mon_osd_nearfull_ratio = '0.9' > >> (unchangeable) > > > > This is telling you that this variable has no observers (i.e. nothing monitors > > it dynamically) so changing it at runtime has no effect. IOW it is read at > > start-up and not referred to again after that IIUC. > > That's not actually true. In fact, the "unchangeable" feature is just > misleading/wrong in most cases. See > http://tracker.ceph.com/issues/16054 > > In this case, the config item is re-read for every new pgmap: > > src/mon/PGMonitor.cc: pending_inc.nearfull_ratio = > g_conf->mon_osd_nearfull_ratio; > > so it _is_ changeable at runtime. Oh, I see now, my bad. That was a stupid mistake on my part since the code is quite obvious. I was fooled by the code where "(unchangeable)" is output and the commit/PR for that change. Thanks for setting this straight and correcting my mistake. > > -- Dan -- Cheers, Brad _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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