Hi all,
I'm trying to set up a test Ceph node, but mkcephfs is failing because it's
trying to erase my mount point, which it can't do because the disk I want to
use with Ceph is mounted there. I finally found some manual installation
steps in the mkcephfs manpage (I think these really should be included in the
online docs!) and this is the bit that fails:
$ mkcephfs --init-local-daemons mon -d /tmp/foo
=== mon.0 ===
rm: cannot remove `/var/lib/ceph/osd/ceph-0': Device or resource busy
/usr/bin/ceph-mon: error creating monfs: (5) Input/output error
2013-02-09 13:17:24.941676 b7358710 -1 store(/var/lib/ceph/osd/ceph-0/)
MonitorStore::mkfs: failed to remove /var/lib/ceph/osd/ceph-0/: rm returned
run_cmd(rm): exited with status 1
2013-02-09 13:17:24.941746 b7358710 -1 mon.0@-1(probing) e0 store->mkfs failed
with: (5) Input/output error
What am I doing wrong? I am going off the ceph.com docs[1], which says "If
you are running multiple OSDs per host and one hard disk per OSD, you should
mount the disk under the OSD data directory (if you haven’t done so already)".
I am only running one OSD on this host, does this mean I shouldn't mount the
disk before running mkcephfs? Won't that just create all the files on the
wrong disk?
I'm running Debian Squeeze with the debian-bobtail packages installed as per
the ceph.com Debian instructions[2].
Any suggestions?
Many thanks,
Adam.
[1] http://ceph.com/docs/master/rados/deployment/mkcephfs/
[2] http://ceph.com/docs/master/install/debian/
P.S. I would've posted on ceph-users except it's not carried on GMane yet.
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