To provide a complete (meaning it is currently incomplete) disk usage report, I
think zfs would need provide the following:
Each block in a zfs fs in general is shared by one or more of either the
current fs or snapshots. Call this the block's "share set". Eg,
(storage/fs, storage/[EMAIL PROTECTED], storage/[EMAIL PROTECTED])
Group the blocks (from the entire fs) that have identical "share sets" together
and call this a "shared collection". For each "shared collection", report the
disk usage based on the total number of blocks in that "shared collection".
It is to be expected that a snapshot or fs could appear in more than one
"shared collection".
eg,
zfs list-shared
SHARED COLLECTION
USED
(storage/fs, storage/[EMAIL PROTECTED], storage/[EMAIL PROTECTED])
100G
(storage/[EMAIL PROTECTED], storage/[EMAIL PROTECTED], storage/[EMAIL
PROTECTED]) 40G
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