X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fdoc%2Fman%2F8%2Fceph-osd.rst;fp=src%2Fceph%2Fdoc%2Fman%2F8%2Fceph-osd.rst;h=388e339d97562f1513bfa512ca8af86bf447c4d1;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git diff --git a/src/ceph/doc/man/8/ceph-osd.rst b/src/ceph/doc/man/8/ceph-osd.rst new file mode 100644 index 0000000..388e339 --- /dev/null +++ b/src/ceph/doc/man/8/ceph-osd.rst @@ -0,0 +1,134 @@ +:orphan: + +======================================== + ceph-osd -- ceph object storage daemon +======================================== + +.. program:: ceph-osd + +Synopsis +======== + +| **ceph-osd** -i *osdnum* [ --osd-data *datapath* ] [ --osd-journal + *journal* ] [ --mkfs ] [ --mkjournal ] [--flush-journal] [--check-allows-journal] [--check-wants-journal] [--check-needs-journal] [ --mkkey ] + + +Description +=========== + +**ceph-osd** is the object storage daemon for the Ceph distributed file +system. It is responsible for storing objects on a local file system +and providing access to them over the network. + +The datapath argument should be a directory on a xfs file system +where the object data resides. The journal is optional, and is only +useful performance-wise when it resides on a different disk than +datapath with low latency (ideally, an NVRAM device). + + +Options +======= + +.. option:: -f, --foreground + + Foreground: do not daemonize after startup (run in foreground). Do + not generate a pid file. Useful when run via :doc:`ceph-run `\(8). + +.. option:: -d + + Debug mode: like ``-f``, but also send all log output to stderr. + +.. option:: --setuser userorgid + + Set uid after starting. If a username is specified, the user + record is looked up to get a uid and a gid, and the gid is also set + as well, unless --setgroup is also specified. + +.. option:: --setgroup grouporgid + + Set gid after starting. If a group name is specified the group + record is looked up to get a gid. + +.. option:: --osd-data osddata + + Use object store at *osddata*. + +.. option:: --osd-journal journal + + Journal updates to *journal*. + +.. option:: --check-wants-journal + + Check whether a journal is desired. + +.. option:: --check-allows-journal + + Check whether a journal is allowed. + +.. option:: --check-needs-journal + + Check whether a journal is required. + +.. option:: --mkfs + + Create an empty object repository. This also initializes the journal + (if one is defined). + +.. option:: --mkkey + + Generate a new secret key. This is normally used in combination + with ``--mkfs`` as it is more convenient than generating a key by + hand with :doc:`ceph-authtool `\(8). + +.. option:: --mkjournal + + Create a new journal file to match an existing object repository. + This is useful if the journal device or file is wiped out due to a + disk or file system failure. + +.. option:: --flush-journal + + Flush the journal to permanent store. This runs in the foreground + so you know when it's completed. This can be useful if you want to + resize the journal or need to otherwise destroy it: this guarantees + you won't lose data. + +.. option:: --get-cluster-fsid + + Print the cluster fsid (uuid) and exit. + +.. option:: --get-osd-fsid + + Print the OSD's fsid and exit. The OSD's uuid is generated at + --mkfs time and is thus unique to a particular instantiation of + this OSD. + +.. option:: --get-journal-fsid + + Print the journal's uuid. The journal fsid is set to match the OSD + fsid at --mkfs time. + +.. option:: -c ceph.conf, --conf=ceph.conf + + Use *ceph.conf* configuration file instead of the default + ``/etc/ceph/ceph.conf`` for runtime configuration options. + +.. option:: -m monaddress[:port] + + Connect to specified monitor (instead of looking through + ``ceph.conf``). + + +Availability +============ + +**ceph-osd** is part of Ceph, a massively scalable, open-source, distributed storage system. Please refer to +the Ceph documentation at http://ceph.com/docs for more information. + +See also +======== + +:doc:`ceph `\(8), +:doc:`ceph-mds `\(8), +:doc:`ceph-mon `\(8), +:doc:`ceph-authtool `\(8)