Re: [ceph-users] Ceph MDS remove
Sorry, forgot to mention that I'm running Ceph 0.87 on Centos 7. On 24/02/2015 10:20, Xavier Villaneau wrote: Hello, I also had to remove the MDSs on a Giant test cluster a few days ago, and stumbled upon the same problems. Le 24/02/2015 09:58, ceph-users a écrit : Hi all, I've set up a ceph cluster using this playbook: https://github.com/ceph/ceph-ansible I've configured in my hosts list [mdss] hostname1 hostname2 I now need to remove this MDS from the cluster. The only document I found is this: http://www.sebastien-han.fr/blog/2012/07/04/remove-a-mds-server-from-a-ceph-cluster/ # service ceph -a stop mds === mds.z-srv-m-cph02 === Stopping Ceph mds.z-srv-m-cph02 on z-srv-m-cph02...done === mds.r-srv-m-cph02 === Stopping Ceph mds.r-srv-m-cph02 on r-srv-m-cph02...done === mds.r-srv-m-cph01 === Stopping Ceph mds.r-srv-m-cph01 on r-srv-m-cph01...done === mds.0 === Stopping Ceph mds.0 on zrh-srv-m-cph01...done === mds.192.168.0.1 === Stopping Ceph mds.192.168.0.1 on z-srv-m-cph01...done === mds.z-srv-m-cph01 === Stopping Ceph mds.z-srv-m-cph01 on z-srv-m-cph01...done [root@z-srv-m-cph01 ceph]# ceph mds stat e1: 0/0/0 up 1. question: why the MDS are not stopped? I also had trouble stopping my MDS. They would start up again even if I killed the processes… I suggest you try : sudo stop ceph-mds-all 2. When I try to remove them: # ceph mds rm mds.z-srv-m-cph01 z-srv-m-cph01 Invalid command: mds.z-srv-m-cph01 doesn't represent an int mds rm : remove nonactive mds Error EINVAL: invalid command In the mds rm command, the refers to the ID of the metadata pool used by CephFS (since there can only be one right now). And the is simply mds.n where n is 0, 1, etc. Maybe there are other possible values for type.id, but it worked for me. The ansible playbook created me a conf like this in ceph.conf: [mds] [mds.z-srv-m-cph01] host = z-srv-m-cph01 I believe you'll also need to delete the [msd] section in ceph.conf, but since I do not know much about ansible I can't give you more advice on this. Finally, as described on the blog post you linked, you need to reset cephfs after (or the health will be complaining) : ceph mds newfs --yes-i-really-mean-it Regards, -- Xavier Can someone please help on this or at least give some hints? Thank you very much Gian ___ 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 ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] Permanente Mount RBD blocs device RHEL7
Hi, are you using /etc/ceph/rbdmount as a 'mapping fstab' plus your mountpoints in normal fstab plus the systemctl service ? Gian > On 07 Mar 2015, at 05:26, Jesus Chavez (jeschave) wrote: > > Still not working does anybody know show to automap and Mount rbd image on > redhat? > > Regards > > > Jesus Chavez > SYSTEMS ENGINEER-C.SALES > > jesch...@cisco.com > Phone: +52 55 5267 3146 > Mobile: +51 1 5538883255 > > CCIE - 44433 > > On Mar 2, 2015, at 4:52 AM, Jesus Chavez (jeschave) > wrote: > >> Thank you so much Alexandre! :) >> >> >> Jesus Chavez >> SYSTEMS ENGINEER-C.SALES >> >> jesch...@cisco.com >> Phone: +52 55 5267 3146 >> Mobile: +51 1 5538883255 >> >> CCIE - 44433 >> >> On Mar 2, 2015, at 4:26 AM, Alexandre DERUMIER wrote: >> >>> Hi, >>> >>> maybe this can help you: >>> >>> http://www.sebastien-han.fr/blog/2013/11/22/map-slash-unmap-rbd-device-on-boot-slash-shutdown/ >>> >>> >>> Regards, >>> >>> Alexandre >>> >>> - Mail original - >>> De: "Jesus Chavez (jeschave)" >>> À: "ceph-users" >>> Envoyé: Lundi 2 Mars 2015 11:14:49 >>> Objet: [ceph-users] Permanente Mount RBD blocs device RHEL7 >>> >>> Hi all! I have been trying to get permanent my fs maked by the rbd device >>> mapping on rhel7 modifying /etc/fstab but everytime I reboot the server I >>> lose the mapping to the pool so the server gets stuck since It didnt find >>> the /dev/rbd0 device, does anybody know if there any procedure to not lose >>> the mapping or make the filesystem permanent? >>> >>> Thanks! >>> >>> >>> Jesus Chavez >>> SYSTEMS ENGINEER-C.SALES >>> >>> jesch...@cisco.com >>> Phone : +52 55 5267 3146 >>> Mobile: +51 1 5538883255 >>> >>> CCIE - 44433 >>> >>> ___ >>> 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 > ___ > 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
[ceph-users] Segfault after modifying CRUSHMAP
Hi guys, I was creating new buckets and adjusting the crush map when 1 monitor stopped replying. The scenario is: 2 servers 2 MONs 21 OSDs each server Error message in the mon.log: NOTE: a copy of the executable, or `objdump -rdS ` is needed to interpret this. I uploaded the stderr to: http://ur1.ca/jxbrp Does anybody have any idea? Thank you, Gian ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
[ceph-users] Unable to create rbd snapshot on Centos 7
Hi guys, I'm trying to test rbd snapshot on a Centos 7. # rbd -p rbd ls test-a test-b test-c test-d # rbd snap create rbd/test-b@snap rbd: failed to create snapshot: (22) Invalid argument 2015-03-20 15:22:56.300731 7f78f7afe880 -1 librbd: failed to create snap id: (22) Invalid argument I tried the same exact command on a Ubuntu 14.04.2 LTS # rbd snap create rbd/test-a@snap # rbd snap ls --image test-a SNAPID NAME SIZE 2 snap 10240 MB Does anyone have any clue? Thank you, Gianfranco ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
