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# setup
$ cat >foo.conf <<'EOF'
> ; ---------------------
> [group cephnet]
> addr = 10.3.14.0/24
>
> [global]
> pid file = /home/sage/ceph/src/out/$name.pid
>
> [osd]
> osd data = /mnt/osd$id
> [osd.3]
> host = cosd3
> EOF
To extract the value of the "osd data" option for the osd0 daemon,
$ ceph-conf -c foo.conf "osd data" --name osd.0
/mnt/osd0
This is equivalent to doing specifying sections [osd0], [osd.0],
[osd], or [global], in that order of preference:
# TODO the "admin" here seems like an actual bug
$ ceph-conf -c foo.conf "osd data" -s osd0 -s osd.0 -s osd -s global
/mnt/osdadmin
To list all sections that begin with osd:
$ ceph-conf -c foo.conf -l osd
osd
osd.3
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