Provided by: ceph_0.41-1ubuntu2_amd64
ceph-osd - ceph object storage daemon
ceph-osd -i osdnum [ --osd-data datapath ] [ --osd-journal journal ] [ --mkfs ] [ --mkjournal ] [ --mkkey ]
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 btrfs 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).
-f, --foreground Foreground: do not daemonize after startup (run in foreground). Do not generate a pid file. Useful when run via ceph-run(8). -d Debug mode: like -f, but also send all log output to stderr. --osd-data osddata Use object store at osddata. --osd-journal journal Journal updates to journal. --mkfs Create an empty object repository. Normally invoked by mkcephfs(8). This also initializes the journal (if one is defined). --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 ceph-authtool(8). --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. --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. -c ceph.conf, --conf=ceph.conf Use ceph.conf configuration file instead of the default /etc/ceph/ceph.conf for runtime configuration options. -m monaddress[:port] Connect to specified monitor (instead of looking through ceph.conf).
ceph-osd is part of the Ceph distributed file system. Please refer to the Ceph wiki at http://ceph.newdream.net/wiki for more information.
ceph(8), ceph-mds(8), ceph-mon(8), ceph-authtool(8)
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