Yesterday's integration of
6678033 resilver code should prefetch
as part of changeset 74e8c05021f1 (which should be in build 129 when it
comes out) may improve scrub times, particularly if you have a large
number of small files and a large number of snapshots. I recently
tested an early version of the fix, and saw one pool go from an elapsed
time of 85 hours to 20 hours; another (with many fewer snapshots) went
from 35 to 17.
- Bill
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