RE: ocf script for ceph quorum check and fs
On Wed, 7 Aug 2013, James Harper wrote: > > > > I want to mount ceph fs (using fuse) but /etc/fstab treats it as a local > > filesystem and so tries to mount it before ceph is started, or indeed before > > the network is even up. > > > > Also, ceph tries to start before the network is up and fails because it > > can't > > bind to an address. I think this is because I'm using openvswitch which is > > starting later. > > > > Anyway, controlling it all via pacemaker seems like a much smarter thing to > > do as I can ensure that ceph doesn't start until the network is up (which > > it will > > be when pacemaker has quorum), and then the fs doesn't mount until ceph > > is started and the ceph cluster has quorum and maybe until an mds is > > running. > > > > So to do this I need ocf scripts for: > > > > . starting components of ceph, which appears to be provided by ceph- > > resource-agents.deb, but I haven't tested yet > > . checking ceph quorum - I guess I'd need to write a script for this like > > existing > > ping check > > . checking mds is available - maybe part of the mount script > > . mount using ceph-fuse. Existing fs scripts make assumptions about fs types > > and parameters and don't work > > > > Has anyone written a 'check_ceph_quorum' script? Or a fs mount script that > > is compatible with fuse? I don't want to re-invent any wheels! > > > > I have written a ceph_check RA that sets a value in the CIB if the ceph > cluster has quorum, and another to mount the fuse fs, although I think maybe > it would be better to fix the bug in the existing pacemaker RA to allow > mounting fuse properly. > > Is anyone interested enough for me to clean it up a bit and post it? If it's in the ceph.git tree, then I'm certainly interested in seeing it in a working state! :) sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: ocf script for ceph quorum check and fs
> > I want to mount ceph fs (using fuse) but /etc/fstab treats it as a local > filesystem and so tries to mount it before ceph is started, or indeed before > the network is even up. > > Also, ceph tries to start before the network is up and fails because it can't > bind to an address. I think this is because I'm using openvswitch which is > starting later. > > Anyway, controlling it all via pacemaker seems like a much smarter thing to > do as I can ensure that ceph doesn't start until the network is up (which it > will > be when pacemaker has quorum), and then the fs doesn't mount until ceph > is started and the ceph cluster has quorum and maybe until an mds is > running. > > So to do this I need ocf scripts for: > > . starting components of ceph, which appears to be provided by ceph- > resource-agents.deb, but I haven't tested yet > . checking ceph quorum - I guess I'd need to write a script for this like > existing > ping check > . checking mds is available - maybe part of the mount script > . mount using ceph-fuse. Existing fs scripts make assumptions about fs types > and parameters and don't work > > Has anyone written a 'check_ceph_quorum' script? Or a fs mount script that > is compatible with fuse? I don't want to re-invent any wheels! > I have written a ceph_check RA that sets a value in the CIB if the ceph cluster has quorum, and another to mount the fuse fs, although I think maybe it would be better to fix the bug in the existing pacemaker RA to allow mounting fuse properly. Is anyone interested enough for me to clean it up a bit and post it? James -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
ocf script for ceph quorum check and fs
I want to mount ceph fs (using fuse) but /etc/fstab treats it as a local filesystem and so tries to mount it before ceph is started, or indeed before the network is even up. Also, ceph tries to start before the network is up and fails because it can't bind to an address. I think this is because I'm using openvswitch which is starting later. Anyway, controlling it all via pacemaker seems like a much smarter thing to do as I can ensure that ceph doesn't start until the network is up (which it will be when pacemaker has quorum), and then the fs doesn't mount until ceph is started and the ceph cluster has quorum and maybe until an mds is running. So to do this I need ocf scripts for: . starting components of ceph, which appears to be provided by ceph-resource-agents.deb, but I haven't tested yet . checking ceph quorum - I guess I'd need to write a script for this like existing ping check . checking mds is available - maybe part of the mount script . mount using ceph-fuse. Existing fs scripts make assumptions about fs types and parameters and don't work Has anyone written a 'check_ceph_quorum' script? Or a fs mount script that is compatible with fuse? I don't want to re-invent any wheels! Thanks James -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
