SES6: ceph -s shows osd's rebalancing after osd marked out, after a cluster power failure.

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Environment

SUSE Enterprise Storage 6

Situation

"ceph -s" shows osd's rebalancing after osd marked out, after a cluster power failure.
Cluster reports Health: HEALTH_OK
336 osds up/in.
One osd is out due to hardware issues.  
All pg's are active+clean and no backfilling is occurring.  

 #==[ Command ]======================================#
# /usr/bin/ceph --connect-timeout=5 -s
  cluster:
    id:     0260f99a-117e-4c7e-8fbe-86c483bcd7e9
    health: HEALTH_OK
 
  services:
    mon: 3 daemons, quorum mon01,mon02,mon03 (age 41h)
    mgr: mon03(active, since 3d), standbys: mon02, mon01
    mds: cephfs:1 {0=mds01=up:active} 1 up:standby
    osd: 337 osds: 336 up (since 14m), 336 in (since 2d)
    rgw: 2 daemons active (cephigw01, cephigw02)
 
  data:
    pools:   8 pools, 4328 pgs
    objects: 607.39M objects, 608 TiB
    usage:   1.1 PiB used, 1.3 PiB / 2.4 PiB avail
    pgs:     4323 active+clean
             5    active+clean+scrubbing+deep
 
  io:
    client:   216 MiB/s rd, 35 MiB/s wr, 418 op/s rd, 36 op/s wr
 
  progress:
    Rebalancing after osd.127 marked out
      [..............................]
    Rebalancing after osd.123 marked out
      [====..........................]
    Rebalancing after osd.104 marked out
      [=.............................]
    Rebalancing after osd.115 marked out
      [=.............................]
    Rebalancing after osd.109 marked out
      [..............................]
    Rebalancing after osd.122 marked out
      [..............................]
    Rebalancing after osd.121 marked out
      [..............................]
    Rebalancing after osd.99 marked out
      [..............................]
    Rebalancing after osd.116 marked out
      [=.............................]
    Rebalancing after osd.110 marked out
      [..............................]
    Rebalancing after osd.128 marked out
      [..............................]

Customer is using:
ceph 14.2.5.382+g8881d33957-3.30.1

Resolution

Restarting the active mgr daemon resolved the issue.
ssh mon03
systemctl restart ceph-mgr@mon03.servcie

The "rebalancing" messages are gone now.

#==[ Command ]======================================#
# /usr/bin/ceph --connect-timeout=5 -s
  cluster:
    id:     0260f99a-117e-4c7e-8fbe-86c483bcd7e9
    health: HEALTH_OK
 
  services:
    mon: 3 daemons, quorum mon01,mon02,mon03 (age 41h)
    mgr: mon03(active, since 3d), standbys: mon02, mon01
    mds: cephfs:1 {0=mds01=up:active} 1 up:standby
    osd: 337 osds: 336 up (since 14m), 336 in (since 2d)
    rgw: 2 daemons active (cephigw01, cephigw02)
 
  data:
    pools:   8 pools, 4328 pgs
    objects: 607.39M objects, 608 TiB
    usage:   1.1 PiB used, 1.3 PiB / 2.4 PiB avail
    pgs:     4323 active+clean
             5    active+clean+scrubbing+deep
 
  io:
    client:   216 MiB/s rd, 35 MiB/s wr, 418 op/s rd, 36 op/s wr

Cause

mgr daemon had stale data. 

Status

Top Issue

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:000019649
  • Creation Date: 18-Jun-2020
  • Modified Date:18-Jun-2020
    • SUSE Enterprise Storage

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