[gpfsug-discuss] Querying size of snapshots

[Christopher Black]

We have some large filesets (PB+) and filesystems where I would like to monitor delete rates and estimate how much space we will get back as snapshots expire. We only keep 3-4 daily snapshots on this filesystem due to churn.
I’ve tried to query the sizes of snapshots using the following command:
mmlssnapshot fsname -d --block-size 1T

However, this has run for over an hour without producing any results. Metadata is all on flash and I’m not sure why this is taking so long.

Does anyone have any insight on this or alternate methods for getting estimates of snapshot sizes?

Best,
Chris

PS I am aware of the warning in docs about the -d option.
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