But that redults in a 1-3s hickup for all KVM vms. This is not what I want. Stefan Am 26.02.2013 um 18:06 schrieb Sage Weil <sage@xxxxxxxxxxx>: > On Tue, 26 Feb 2013, Stefan Priebe - Profihost AG wrote: >> Hi list, >> >> how can i do a short maintanance like a kernel upgrade on an osd host? >> Right now ceph starts to backfill immediatly if i say: >> ceph osd out 41 >> ... >> >> Without ceph osd out command all clients hang for the time ceph does not >> know that the host was rebootet. >> >> I tried >> ceph osd set nodown and ceph osd set noout >> but this doesn't result in any difference > > For a temporary event like this, you want the osd to be down (so that io > can continue with remaining replicas) but NOT to mark it out (so that data > doesn't get rebalanced). The simplest way to do that is > > ceph osd set noout > killall ceph-osd > .. reboot .. > > Just remember to do > > ceph osd unset noout > > when you are done so that future osds that fail will get marked out on > their own after the 5 minute (default) interval. > > sage > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
