On Tue, Jul 26, 2016 at 12:16:35PM +1000, Goncalo Borges wrote: > Hi Brad > > Thanks for replying. > > Answers inline. > > > > > I am a bit confused about the 'unchachable' message we get in Jewel 10.2.2 > > > when I try to change some cluster configs. > > > > > > For example: > > > > > > 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. > > > > > but the 0.85 default values continues to be showed in > > > > > > ceph --show-config --conf /dev/null | grep mon_osd_nearfull_ratio > > > mon_osd_nearfull_ratio = 0.85 > > Try something like the following. > > > > $ ceph daemon mon.a config show|grep mon_osd_nearfull_ratio > > > > > and I continue to have health warnings regarding near full osds. > > So the actual config value has been changed but has no affect and will not > > persist. IOW, this value needs to be modified in the conf file and the daemon > > restarted. > > > > > > > > 2./ If I change in the ceph.conf and restart services, I get the same > > > behaviour as in 1./ However, if I check the daemon configuration, I see: > > Please clarify what you mean by "the same behaviour"? > > So, in my ceph.conf I've set 'mon osd nearfull ratio = 0.90' and restarted > mon and osd (not sure if those were needed) daemons everywhere. > > After restarting, I am still getting the health warnings regarding near full > osds above 85%. If the new value was active, I should not get such warnings. > > > > > > # ceph daemon mon.rccephmon2 config show | grep mon_osd_nearfull_ratio > > > "mon_osd_nearfull_ratio": "0.9", > > Use the daemon command I showed above. > > Isn't it the same as you suggested? That was run after restarting services Yes, it is. I assumed wrongly that you were using the "--show-config" command again here. > so it is still unclear to me why the new value is not picked up and why > running 'ceph --show-config --conf /dev/null | grep mon_osd_nearfull_ratio' That command shows the default ceph config, try something like this. $ ceph -n mon.rccephmon2 --show-config|grep mon_osd_nearfull_ratio > still shows 0.85 > > Maybe a restart if services is not what has to be done but a stop/start > instead? You can certainly try it but I would have thought a restart would involve stop/start of the MON daemon. This thread includes additional information that may be relevant to you atm. http://permalink.gmane.org/gmane.comp.file-systems.ceph.devel/23391 > > Cheers > Goncalo -- Cheers, Brad _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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