Re: Ceph mds is stuck in creating status

[solarflow99 <solarflow99@xxxxxxxxx>]

I had the same thing happen too when I built a ceph cluster on a single VM for testing, I wasn't concerned though because I knew the slow speed was likely a problem.

On Mon, Oct 15, 2018 at 7:34 AM Kisik Jeong <kisik.jeong@xxxxxxxxxxxx> wrote:

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@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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