Following up, I kept the default "ceph" name of the cluster, and didn't muck with any defaults in the ceph.conf file (for auth settings).
Using ceph-deploy to prepare an OSD resulted in the following error. It created a 1G journal file on the mount I had specified, and I do see a new partition being created on the server machine on the /dev/sda disk (ceph-1) (of type GPT). Is there a size limitation to the disk? And shouldn't the journal (see warning below) ideally be on a different device so that errors are locally recoverable?
Thanks,
Hari
2013-07-23 11:09:05,921 ceph_deploy.osd ERROR ceph-disk-prepare -- /dev/sda /mnt/jnd1/sda-j returned 1
Creating new GPT entries.
Information: Moved requested sector from 34 to 2048 in
order to align on 2048-sector boundaries.
The operation has completed successfully.
meta-data="" isize=2048 agcount=4, agsize=9768117 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=39072465, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=19078, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Creating new GPT entries.
Information: Moved requested sector from 34 to 2048 in
order to align on 2048-sector boundaries.
The operation has completed successfully.
meta-data="" isize=2048 agcount=4, agsize=9768117 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=39072465, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal log bsize=4096 blocks=19078, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
WARNING:ceph-disk:OSD will not be hot-swappable if journal is not the same device as the osd data
umount: /var/lib/ceph/tmp/mnt.HhKB98: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
ceph-disk: Unmounting filesystem failed: Command '['/bin/umount', '--', '/var/lib/ceph/tmp/mnt.HhKB98']' returned non-zero
umount: /var/lib/ceph/tmp/mnt.HhKB98: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
ceph-disk: Unmounting filesystem failed: Command '['/bin/umount', '--', '/var/lib/ceph/tmp/mnt.HhKB98']' returned non-zero
exit status
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