On May 29, 2010, at 9:42 PM, Dan Nelson wrote:
If the kernel does the snapshot deleting itself, why not add a pool-
level
property that sets the amount of free space at which the deletion
starts?
That way you don't need the cleanup script. Alternatively, make the
org.freebsd:allowautodestroy property hold the trigger freespace
amount.
That way you can have monthly/daily/hourly snapshots but set it so the
hourly ones disappear first, then the dailies (by setting the destroy
trigger slightly higher for the ones you want to expire first).
That'd definitely work. The idea was to keep as much as possible out
of the kernel so that it wouldn't add additional complexity for people
who don't use it (but it certainly wouldn't offend me any to find it
in there :-) ).
--
Kirk Strauser
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