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Describe the feature would like to see added to OpenZFS
zdb -Lbbbs zpool/dataset should calculate a block size histogram for datasets like it does when run on a zpool instead.
How will this feature improve OpenZFS?
Currently zdb -Lbbbs only returns a single line with very little information and statistics when run on a zpool: Dataset zpool/dataset [ZPL], ID 12345, cr_txg 1234567, 123.45G, 12345 objects
The command would be much more helpful in tuning datasets on a zpool, for example, to different record sizes and special device allocation sizes if the data breakdown was able to return the full block size statistics of a dataset.
Additional context
Others have been asking about this in other forums:
Describe the feature would like to see added to OpenZFS
zdb -Lbbbs zpool/dataset
should calculate a block size histogram for datasets like it does when run on a zpool instead.How will this feature improve OpenZFS?
Currently
zdb -Lbbbs
only returns a single line with very little information and statistics when run on a zpool:Dataset zpool/dataset [ZPL], ID 12345, cr_txg 1234567, 123.45G, 12345 objects
The command would be much more helpful in tuning datasets on a zpool, for example, to different record sizes and special device allocation sizes if the data breakdown was able to return the full block size statistics of a dataset.
Additional context
Others have been asking about this in other forums:
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