Hi, The manual method is good if you have small number of OSD's, but in case of OSD's > 200 it will be a very time consuming task to create the OSD's like that.
Also i used the ceph-ansible to setup my cluster with 2 OSD's per SSD and my cluster was UP & running but i encountered the auto mount problem when one of the my OSD node rebooted. So i started to look into it by setting up a virtual environment. Thanks, Sandeep On Fri, Dec 16, 2016 at 2:45 PM, JiaJia Zhong <zhongjia...@haomaiyi.com> wrote: > In your scenario, don't use ceph-disk > follow http://docs.ceph.com/docs/jewel/rados/operations/add-or-rm-osds/ > > > ------------------ Original ------------------ > *From: * "Burkhard Linke"<burkhard.li...@computational.bio.uni-giessen.de > >; > *Date: * Fri, Dec 16, 2016 05:09 PM > *To: * "CEPH list"<ceph-users@lists.ceph.com>; > *Subject: * Re: [ceph-users] 2 OSD's per drive , unable to start the osd's > > Hi, > > On 12/16/2016 09:22 AM, sandeep.cool...@gmail.com wrote: > > Hi, > > > I was trying the scenario where i have partitioned my drive (/dev/sdb) > into 4 (sdb1, sdb2 , sdb3, sdb4) using the sgdisk utility: > > # sgdisk -z /dev/sdb > # sgdisk -n 1:0:+1024 /dev/sdb -c 1:"ceph journal" > # sgdisk -n 1:0:+1024 /dev/sdb -c 2:"ceph journal" > > # sgdisk -n 1:0:+4096 /dev/sdb -c 3:"ceph data" > > # sgdisk -n 1:0:+4096 /dev/sdb -c 3:"ceph data" > > > checked the partition with lsblk and it has created the partitions as > expected. > > im using the ceph-disk command to create the osd's: > > # ceph-disk prepare --cluster ceph /dev/sdb3 /dev/sdb1 > prepare_device: OSD will not be hot-swappable if journal is not the same > device as the osd data > prepare_device: Journal /dev/sdb1 was not prepared with ceph-disk. > Symlinking directly. > set_data_partition: incorrect partition UUID: > 0fc63daf-8483-4772-8e79-3d69d8477de4, > expected ['4fbd7e29-9d25-41b8-afd0-5ec00ceff05d', > '4fbd7e29-9d25-41b8-afd0-062c0ceff05d', > '4fbd7e29-8ae0-4982-bf9d-5a8d867af560', > '4fbd7e29-9d25-41b8-afd0-35865ceff05d'] > > > *snipsnap* > > CEPH OSD and journal partitions have a certain partition type UUID, as the > message suggests. To avoid problems with OSD autodetection at boot time you > need to change the UUID. > > Regards, > Burkhard > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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