Hi, Thanks for the link. I unset the nodown config option and things did seem to improve, although we did still get a few reports from users about issues related filesystem (rbd) access, even after that action was taken.
Thanks again, Shain > On Mar 13, 2017, at 2:43 AM, Alexandre DERUMIER <aderum...@odiso.com> wrote: > > Hi, > >>> Currently I have the. noout and nodown flags set while doing the >>> maintenance work. > > you only need noout to avoid rebalancing > > see documentation: > http://docs.ceph.com/docs/kraken/rados/troubleshooting/troubleshooting-osd/ > "STOPPING W/OUT REBALANCING". > > > Your clients are hanging because of the no down flag > > > See this blog for no-out, no-down flags experiements > > https://www.sebastien-han.fr/blog/2013/04/17/some-ceph-experiments/ > > ----- Mail original ----- > De: "Shain Miley" <smi...@npr.org> > À: "ceph-users" <ceph-us...@ceph.com> > Envoyé: Lundi 13 Mars 2017 04:58:08 > Objet: [ceph-users] noout, nodown and blocked requests > > Hello, > One of the nodes in our 14 node cluster is offline and before I totally > commit to fully removing the node from the cluster (there is a chance I can > get the node back in working order in the next few days) I would like to run > the cluster with that single node out for a few days. > > Currently I have the. noout and nodown flags set while doing the maintenance > work. > > Some users are complaining about disconnects and other oddities when try to > save and access files currently on the cluster. > > I am also seeing some blocked requests when viewing the cluster status (at > this point I see 160 block requests spread over 15 to 20 osd’s). > > Currently I have a replication level of 3 on this pool and a min_size of 1. > > My question is this…is there a better method to use (other than using noout > and nodown) in this scenario where I do not want data movement yet…but I do > want the reads and writes to the cluster to to respond as normally as > possible for the end users? > > Thanks in advance, > > Shain > > > _______________________________________________ > 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
