> Op 3 augustus 2017 om 13:36 schreef linghucongsong <linghucongs...@163.com>: > > > > > set the osd noout nodown >
While noout is correct and might help in some situations, never set nodown unless you really need that. It will block I/O since you are taking down OSDs which aren't marked as down. In Hans's case the 'problem' is that the HEALTH_ERR is correct. Since Jewel Ceph's health will go to ERR as soon as PGs are not active. When you take down a node they will re-peer PGs and during that time no I/O can be performed on those PGs and that is a ERR state. Peering can be done faster by having higher clocked CPUs, but there will be a short moment where I/O will block for a set of PGs. Wido > > > > At 2017-08-03 18:29:47, "Hans van den Bogert" <hansbog...@gmail.com> wrote: > > Hi all, > > > One thing which has bothered since the beginning of using ceph is that a > reboot of a single OSD causes a HEALTH_ERR state for the cluster for at least > a couple of seconds. > > > > In the case of planned reboot of a OSD node, should I do some extra commands > in order not to go to HEALTH_ERR state? > > > Thanks, > > > Hans > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
