[ceph-users] Ceph mds is stuck in creating status

Kisik Jeong kisik.jeong at csl.skku.edu
Mon Oct 15 07:33:56 PDT 2018


Hello,

I successfully deployed Ceph cluster with 16 OSDs and created CephFS before.
But after rebooting due to mds slow request problem, when creating CephFS,
Ceph mds goes creating status and never changes.
Seeing Ceph status, there is no other problem I think. Here is 'ceph -s'
result:

csl at hpc1:~$ ceph -s
  cluster:
    id:     1a32c483-cb2e-4ab3-ac60-02966a8fd327
    health: HEALTH_OK

  services:
    mon: 1 daemons, quorum hpc1
    mgr: hpc1(active)
    mds: cephfs-1/1/1 up  {0=hpc1=up:creating}
    osd: 16 osds: 16 up, 16 in

  data:
    pools:   2 pools, 640 pgs
    objects: 7 objects, 124B
    usage:   34.3GiB used, 116TiB / 116TiB avail
    pgs:     640 active+clean

However, CephFS still works in case of 8 OSDs.

If there is any doubt of this phenomenon, please let me know. Thank you.

PS. I attached my ceph.conf contents:

[global]
fsid = 1a32c483-cb2e-4ab3-ac60-02966a8fd327
mon_initial_members = hpc1
mon_host = 192.168.40.10
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx

public_network = 192.168.40.0/24
cluster_network = 192.168.40.0/24

[osd]
osd journal size = 1024
osd max object name len = 256
osd max object namespace len = 64
osd mount options f2fs = active_logs=2

[osd.0]
host = hpc9
public_addr = 192.168.40.18
cluster_addr = 192.168.40.18

[osd.1]
host = hpc10
public_addr = 192.168.40.19
cluster_addr = 192.168.40.19

[osd.2]
host = hpc9
public_addr = 192.168.40.18
cluster_addr = 192.168.40.18

[osd.3]
host = hpc10
public_addr = 192.168.40.19
cluster_addr = 192.168.40.19

[osd.4]
host = hpc9
public_addr = 192.168.40.18
cluster_addr = 192.168.40.18

[osd.5]
host = hpc10
public_addr = 192.168.40.19
cluster_addr = 192.168.40.19

[osd.6]
host = hpc9
public_addr = 192.168.40.18
cluster_addr = 192.168.40.18

[osd.7]
host = hpc10
public_addr = 192.168.40.19
cluster_addr = 192.168.40.19

[osd.8]
host = hpc9
public_addr = 192.168.40.18
cluster_addr = 192.168.40.18

[osd.9]
host = hpc10
public_addr = 192.168.40.19
cluster_addr = 192.168.40.19

[osd.10]
host = hpc9
public_addr = 192.168.10.18
cluster_addr = 192.168.40.18

[osd.11]
host = hpc10
public_addr = 192.168.10.19
cluster_addr = 192.168.40.19

[osd.12]
host = hpc9
public_addr = 192.168.10.18
cluster_addr = 192.168.40.18

[osd.13]
host = hpc10
public_addr = 192.168.10.19
cluster_addr = 192.168.40.19

[osd.14]
host = hpc9
public_addr = 192.168.10.18
cluster_addr = 192.168.40.18

[osd.15]
host = hpc10
public_addr = 192.168.10.19
cluster_addr = 192.168.40.19

-- 
Kisik Jeong
Ph.D. Student
Computer Systems Laboratory
Sungkyunkwan University
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