With the pg_autoscaler Manager module enabled the cluster shows a "many more objects per pg than average" warning
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SUSE Enterprise Storage 6
The cluster health status reports a warning similar to the following example:
pool <$pool_name> objects per pg (209000) is more than 10.7800 times cluster average (19400)
The current pg_autoscaler values for the pools, including the current ratios, can be seen with:
When now adjusting the "target_size_ratio" for this metadata pool, the new PG count that the pool will get if the mode is set to "on" will be shown with the status command under the "NEW PG_NUM" column heading. If the value looks sane (32 PGs for example), the setting can be implemented by setting the autoscale mode back to "on".
For additional information regarding the pg_autoscaler MGR module, see the SES Online documentation and also the upstream Ceph Documentation.
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- Document ID:000020361
- Creation Date: 10-Aug-2021
- Modified Date:10-Aug-2021
- SUSE Enterprise Storage
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