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Setting SES5 Cluster Ratios

This document (7023290) is provided subject to the disclaimer at the end of this document.


SUSE Enterprise Storage 5 (SES5)


The cluster shows the total available space on mounted cephfs filesystems less than expected.
client:~ # df -h /cluster/cephfs/
Filesystem Size Used Avail Use% Mounted on,, 117G 68G 49G 59% /cluster/cephfs

master:~ # ceph report | grep ratio
        "full_ratio": 0.750000,
        "backfillfull_ratio": 0.700000,
        "nearfull_ratio": 0.650000,

After a full cluster scenario, the full_ratio was set to a higher value for cluster recovery.

master:~ # ceph osd dump | grep ratio
full_ratio 0.97
backfillfull_ratio 0.9
nearfull_ratio 0.85


Reset the cluster ratios to default values.
master:~ # ceph osd set-full-ratio 0.95
osd set-full-ratio 0.95

master:~ # ceph osd set-backfillfull-ratio 0.9
osd set-backfillfull-ratio 0.9

master:~ # ceph osd set-nearfull-ratio 0.85
osd set-nearfull-ratio 0.85


The cluster ratios should remain at default values and changed only temporarily.


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:7023290
  • Creation Date: 20-Aug-2018
  • Modified Date:03-Mar-2020
    • SUSE Enterprise Storage

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