Sum of bucket sizes dont match up to the cluster occupancy

[Ronnie Puthukkeril <rputhukkeril@xxxxxxxxxx>]

Hi,

We have a situation where the sum of the bucket sizes as observed from the bucket stats command is way less than the actual cluster usage.

 

Sum of bucket sizes = 11TB

Replication size = 2

Total expected cluster occupancy = 22TB

Actual cluster occupancy = 100TB

 

Any pointers on debugging this?

 

What we have checked:

1. We don’t have a whole lot of small object which would take up more space on the host due to a min_alloc size for HDD defaulting to 64KB
2. Tried to list orphan objects but this seems to take for ever

 

Questions:

1. Is there a way to manually identify stale objects in the data pool, so that these could be subsequently deleted directly from the pool level?
2. I guess the bucket index stores only the reference to the head object? How to find the associated tail objects for this head object?

 

Thanks,

Ronnie

 

 

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