ceph health


ceph health detail


ceph -w


ceph osd tree


mkdir -p /var/lib/ceph/osd/ceph-3


mkfs.xfs -L osd.3 -i size=2048 /dev/sdc


LABEL=osd.3 /var/lib/ceph/osd/ceph-3 xfs defaults 0 0


[osd.3] host = charlie


scp root@daisy:/etc/ceph/keyring.admin /etc/ceph


ceph osd create
ceph-osd -i 3 --mkfs --mkkey


ceph auth add osd.3 osd 'allow *' mon 'allow rwx' -i /var/lib/ceph/osd/ceph-3/keyring


ceph osd crush set osd.3 1.0 rack=unknownrack host=charlie


service ceph start


ceph pg <PG-ID> mark_unfound_lost revert


ceph osd lost <ID>


ceph osd out <ID>


ceph  --admin-daemon /var/run/ceph/ceph-osd.3.asok perf dump | python -m json.tool