Hi Craig and all, I checked S?bastien Han's blog post, it seems that the way how the journal was mounted is a bit different, is it because the article was based on older version of Ceph? ==== $ sudo mount /dev/sdc /journal $ ceph-osd -i 2 --mkjournal 2012-08-16 13:29:58.735095 7ff0c4b58780 -1 created new journal /journal/journal for object store /srv/ceph/osd2 $ sudo service ceph start osd.2 === osd.2 === Starting Ceph osd.2 on ceph03... starting osd.2 at :/0 osd_data /srv/ceph/osd2 /journal/journal ==== >From what I can see, on all my OSD nodes in my Ceph cluster, the journal is mounted on this folder (or file?) instead of /journal: /var/lib/ceph/osd/ceph-X/journal which in turns is a symbolic link to this file: lrwxrwxrwx 1 root root 58 Apr 6 23:45 journal -> /dev/disk/by-partuuid/3ff2c20c-6b58-41d3-9e7e-b3ec63c62c2f which in turns is a symbolic link to the journal partition on the device: lrwxrwxrwx 1 root root 10 May 3 23:48 3ff2c20c-6b58-41d3-9e7e-b3ec63c62c2f -> ../../sdf1 I am using one SSD for journals for multiple OSDs within a node. Any advise on the correct way how to mount and create the journal? Do I need to mount first, or create first? Because I supposed that we need to mount to the partition *after* the journal is created? I am using latest stable version of Dumpling (v0.67.7). Any advice is greatly appreciated. Thank you. On Wed, May 7, 2014 at 1:40 AM, Craig Lewis <clewis at centraldesktop.com>wrote: > On 5/6/14 03:34 , Gandalf Corvotempesta wrote: > > Hi to all, > I would like to replace a disk used as journal (one partition for each OSD) > > Which is the safest method to do so? > _______________________________________________ > ceph-users mailing listceph-users at lists.ceph.comhttp://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > I haven't tried this yet, but I imagine that the process is similar to > moving your journal from the spinning disk to an SSD. > > S?bastien Han had a blog post about this: > http://www.sebastien-han.fr/blog/2012/08/17/ceph-storage-node-maintenance/ > > > > -- > > *Craig Lewis* > Senior Systems Engineer > Office +1.714.602.1309 > Email clewis at centraldesktop.com > > *Central Desktop. Work together in ways you never thought possible.* > Connect with us Website <http://www.centraldesktop.com/> | Twitter<http://www.twitter.com/centraldesktop> | > Facebook <http://www.facebook.com/CentralDesktop> | LinkedIn<http://www.linkedin.com/groups?gid=147417> | > Blog <http://cdblog.centraldesktop.com/> > > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140507/53e837b8/attachment.htm>
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