Is LUN masking an option in your SAN? On 11/27/13, 2:34 PM, "Kevin Horan" <khoran@xxxxxxxxxx> wrote: >Thanks. I may have to go this route, but it seems awfully fragile. One >stray command could destroy the entire cluster, replicas and all. Since >all disks are visible to all nodes, any one of them could mount >everything, corrupting all OSDs at once. > Surly other people are using external FC drives, how do you limit >the visibility of the drives? Am I missing something here? Could there >be a configuration option or something added to ceph to ensure that it >never tries to mount things on its own? > >Thanks. > >Kevin >On 11/26/2013 05:14 PM, Kyle Bader wrote: >>> Is there any way to manually configure which OSDs are started on >>>which >>> machines? The osd configuration block includes the osd name and host, >>>so is >>> there a way to say that, say, osd.0 should only be started on host >>>vashti >>> and osd.1 should only be started on host zadok? I tried using this >>> configuration: >> The ceph udev rules are going to automatically mount disks that match >> the ceph "magic" guids, to dig through the full logic you need to >> inspect these files: >> >> /lib/udev/rules.d/60-ceph-partuuid-workaround.rules >> /lib/udev/rules.d/95-ceph-osd.rules >> >> The upstart scripts look to see what is mounted at /var/lib/ceph/osd/ >> and starts osd daemons as appropriate: >> >> /etc/init/ceph-osd-all-starter.conf >> >> In theory you should be able to remove the udev scripts and mount the >> osds in /var/lib/ceph/osd if your using upstart. You will want to make >> sure that upgrades to the ceph package don't replace the files, maybe >> that means making a null rule and using "-o >> Dpkg::Options::='--force-confold" in ceph-deploy/chef/puppet/whatever. >> You will also want to avoid putting the mounts in fstab because it >> could render your node unbootable if the device or filesystem fails. >> > >_______________________________________________ >ceph-users mailing list >ceph-users@xxxxxxxxxxxxxx >http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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