Hi All,
I am new to ceph and I am trying to debug a few scenarios . I have 2 queries as
listed below -
1.Regarding enabling debug logs for ceph
2.Regarding internal processes of ceph
QUERY 1
I have enabled the logs by setting the log level in /etc/ceph/ceph.conf
attached above -
But none of this is generating information that could be used in debugging .
Also ,
The following CLI generates log as attached in cli_log attachment -
What are the following codes in the log like -
7f12a474c700 , 7f12895af700
QUERY 2
While running Ceph on LTTng , I came across multiple processes spawned like
tp_osd_tp ,tp_osd_recov, tp_osd_disk, osd_op ,tp_osd_cmd.
Why are these processes being spawned so many times and what is the function if
each ?
If someone can share any document/link to understand the ceph internals
processes/functions/working would be highly appreciated.
Regards,
Roshni
[global]
fsid = ebc528fa-61f5-44be-b3df-5af92fce9379
mon_initial_members = ceph-admin
mon_host = 10.0.4.118
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
osd pool default size = 1 # Write an object n times.
osd pool default min size = 1 # Allow writing n copy in a degraded state.
osd pool default pg num = 128
osd pool default pgp num = 128
debug ms = 1/5
debug tp log = 1/20
osd_tracing = true
osd_objectstore_tracing = true
rados_tracing = true
rbd_tracing = true
[mon]
debug mon = 20
debug paxos = 1/5
debug auth = 2
[osd]
debug osd = 1/5
debug filestore = 1/5
debug journal = 1
debug monc = 5/20
[mds]
debug mds = 1
debug mds balancer = 1
debug mds log = 1
debug mds migrator = 1
log to syslog = true
err to syslog = true
root@ceph-admin:/home/cephuser/cluster# rbd --pool mypool snap create --snap
mysnap_myimage18 myimage
2017-07-13 17:20:41.107210 7f12a4759100 1 -- :/0 messenger.start
2017-07-13 17:20:41.108308 7f12a4759100 1 -- :/782351370 --> 10.0.4.118:6789/0
-- auth(proto 0 30 bytes epoch 0) v1 -- ?+0 0x557b971d75a0 con 0x557b971d7020
2017-07-13 17:20:41.111972 7f12a474c700 1 -- 10.0.4.118:0/782351370 learned my
addr 10.0.4.118:0/782351370
2017-07-13 17:20:41.112625 7f12895af700 1 -- 10.0.4.118:0/782351370 <== mon.0
10.0.4.118:6789/0 1 ==== mon_map magic: 0 v1 ==== 200+0+0 (2014826046 0 0)
0x7f1274000bc0 con 0x557b971d7020
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