Ceph

I'm confused because it works for me, in the current master. I get an ObjectNotFound error only when the targeted monitor does not exist.

loic@fold:~/software/ceph/ceph/src$ ./ceph ping mon.a
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
{
    "health": {
        "health": {
            "health_services": [
                {
                    "mons": [
                        {
                            "name": "a",
                            "kb_total": 191212180,
                            "kb_used": 161046980,
                            "kb_avail": 30148816,
                            "avail_percent": 15,
                            "last_updated": "2015-02-02 11:55:09.474920",
                            "store_stats": {
                                "bytes_total": 434835,
                                "bytes_sst": 0,
                                "bytes_log": 433753,
                                "bytes_misc": 1082,
                                "last_updated": "0.000000" 
                            },
                            "health": "HEALTH_OK" 
                        }
                    ]
                }
            ]
        },
        "summary": [],
        "timechecks": {
            "epoch": 2,
            "round": 0,
            "round_status": "finished" 
        },
        "overall_status": "HEALTH_OK",
        "detail": []
    },
    "mon_status": {
        "name": "a",
        "rank": 0,
        "state": "leader",
        "election_epoch": 2,
        "quorum": [
            0
        ],
        "outside_quorum": [],
        "extra_probe_peers": [],
        "sync_provider": [],
        "monmap": {
            "epoch": 1,
            "fsid": "23fb5b11-222b-429c-8b55-83aa1c758824",
            "modified": "2015-02-02 11:53:09.044105",
            "created": "2015-02-02 11:53:09.044105",
            "mons": [
                {
                    "rank": 0,
                    "name": "a",
                    "addr": "127.0.0.1:6789\/0" 
                }
            ]
        }
    }
}

loic@fold:~/software/ceph/ceph/src$ ./ceph ping mon.c
*** DEVELOPER MODE: setting PATH, PYTHONPATH and LD_LIBRARY_PATH ***
Error connecting to cluster: ObjectNotFound

Loic Dachary wrote:

I'm confused because it works for me, in the current master. I get an ObjectNotFound error only when the targeted monitor does not exist.
[...]

sorry, I make a mistake. The conf in my cluster is:

[global]
fsid=58f19e32-d736-40da-af1d-9fa42e48e919
mon host = 192.168.1.125:6789
public network = 192.168.1.0/24
osd_class_dir = /usr/lib64/rados-classes
auth cluster required = none
auth service required = none
auth client required = none

debug mon = 1
debug monc = 20
debug rados = 20

[osd]
osd journal size = 5120
osd journal zero on create = true
osd crush chooseleaf type = 1

[mon]
mon_initial_members = a

[mon.a]
host = node19
mon addr = 192.168.1.125:6789
mon warn on legacy crush tunables = false

librados::RadosClient::ping_monitor -> monclient.build_initial_monmap() -> MonMap::build_initial

Because I has define "mon host" in [global], so below expression is true

// m foo?
  if (!conf>mon_host.empty()) {
    int r = build_from_host_list(conf->mon_host, "noname-");
    if (r < 0) {
      errout << "unable to parse addrs in '" << conf->mon_host << "'" 
             << std::endl;
      return r;
    }
    return 0;
  }